Report of the National Type Evaluation Program (NTEP) Committee

Louis Straub

Chief

Maryland Weights and Measures

Reference

Key Number

**500 Introduction**

The NTEP Committee submits its Report for the 88^th^ National Conference
on Weights and Measures (NCWM). This consists of the Interim Report
presented in NCWM Publication 16 as amended in the Addendum Sheets
issued during the Annual Meeting that was held July 13-17, 2003, in
Sparks, Nevada. The Committee considered communications received prior
to and during the 88^th^ Annual Meeting that are noted in this report.

Table A, identifies all of the items contained in the report by
Reference Key Number, Item Title, and Page Number. The item numbers are
those assigned in the Committee's Interim Meeting Report. Voting items
are indicated with a "V" or, if the item was part of the consent
calendar, by the suffix "VC" after the item numbers. Items marked with
an "I" after the reference key number are information items. An item
marked with a "W" means that item has been withdrawn. Items marked with
a "W" generally will be referred to the regional weights and measures
associations or other groups because they either need additional
development, analysis, and input, or they do not have sufficient
Committee support to bring them before the NCWM. Table B lists the
appendices to the report, and Table C provides a summary of the results
of the voting on the Committee's items and the report in entirety.

The attached report may contain recommendations to revise or amend NCWM
Publication 14, Administrative Procedures, Technical Policy, Checklists,
and Test Procedures or other documents. Revisions proposed by Committee
members are shown in **bold face print** by ~~crossing out~~ information
to be deleted and [underlining]{.underline} information to be added. New
items proposed for addition to NCWM Publication 14 or other documents
are designated as such and shown in **bold face print.**

**Table A**

**Index to Reference Key Items**

Reference Title Page

**Key No.**

**500 Introduction**

[501-1 I International Organization of Legal Metrology (OIML)
Certificate Project 3](#__RefHeading___Toc62279736)

[501-2 I Test Data Exchange Agreements 3](#__RefHeading___Toc62279737)

[501-3 I Adoption of Uniform Regulation for National Type Evaluation by
States 4](#__RefHeading___Toc62279738)

[501-4 I NTEP Policy: Challenges to a Certificate of Conformance and
Verification that Production Meets Type 5](#__RefHeading___Toc62279739)

[501-5 I NTEP Participating Laboratories and Evaluations Reports
5](#__RefHeading___Toc62279740)

[501-6 I NTETC Sectors Reports 5](#__RefHeading___Toc62279741)

[501-7 I Grain Moisture Meter (GMM) and Near Infrared (NIR) Instruments
Dual Certification -- Can a Single Certificate be Issued?
7](#__RefHeading___Toc62279742)

**Table B**

**Appendices**

  -------------- ------------------------------------- ------------- -----------
  **Appendix**   **Title**                             **Reference   **Page**
                                                       Key No.**     

                                                                     
  -------------- ------------------------------------- ------------- -----------

[A NTEP Status by State 501-3 A1](#appendix-a)

[B NTEP Participating Laboratories and Evaluations Report 501-5
B1](#appendix-b)

[C National Type Evaluation Technical Committee (NTETC) 501-6
C1](#appendix-c)

[Grain Moisture Meter (GMM) Sector](#appendix-c)

[D National Type Evaluation Technical Committee (NTETC) 501-6
D1](#appendix-d)

[Near Infrared (NIR) Grain Analyzer Sector](#appendix-d)

[E National Type Evaluation Technical Committee (NTETC) 501-6
E1](#appendix-e)

[Measuring Sector Annual Meeting](#appendix-e)

[F National Type Evaluation Technical Committee (NTETC) 501-6
F1](#appendix-f)

[Weighing Sector Annual Meeting](#appendix-f)

**Table C**

**Voting Results**

+-----------------+---------+---------+---------+----------+--------+
| **Reference Key | **House |         | **House |          | **Res  |
| Number**        | of      |         | of      |          | ults** |
|                 | Rep     |         | Dele    |          |        |
|                 | resenta |         | gates** |          |        |
|                 | tives** |         |         |          |        |
+-----------------+---------+---------+---------+----------+--------+
|                 | *       | *       | *       | **Nays** |        |
|                 | *Yeas** | *Nays** | *Yeas** |          |        |
+-----------------+---------+---------+---------+----------+--------+
| 500 (Report in  | All     | No Nays | All     | No Nays  | Passed |
| Its Entirety)   | Yeas    |         | Yeas    |          |        |
|                 |         |         |         |          |        |
| Voice Vote      |         |         |         |          |        |
+-----------------+---------+---------+---------+----------+--------+

#### Details of All Items

**(In Order by Reference Key Number)**

[]{#__RefHeading___Toc62279736 .anchor}501-1 I International
Organization of Legal Metrology (OIML) Certificate Project

**Source:** Carryover Item 501-1

**Background:** This item was included on the Committee's agenda to
provide an update on NTEP's work to issue OIML R 60**,** "Metrological
Regulation for Load Cells" and R 76, "Non-Automatic Weighing
Instruments" certificates.

***OIML R 76 and R 60 Applications:*** During the 2003 NCWM Interim and
Annual Meetings, Stephen Patoray, NTEP Director, and Louis Straub, NTEP
Committee Chairman, reported that NTEP received no new applications for
R 76 or R 60 tests. The Committee believes that potential applicants for
OIML Certificates are waiting for the results of discussions on the
Mutual Acceptance Arrangement and Checklists Document.

***OIML Certificate System:*** At the 2003 Annual Meeting, Dr. Ehrlich
reported that the 2003 edition of the "OIML Certificate System for
Measuring Instruments" was published in April 2003 and is available for
use. Most notably, the revised system contains new provisions such as
definitions, requirements, test methods and test report formats
regarding families, modules, and families of modules of measuring
instruments. Please contact Dr. Ehrlich or visit the OIML website at
[www.oiml.org](http://www.oiml.org/) to obtain a copy of the new
document (designated P1).

See the 2002 Final Report of the National Type Evaluation Program (NTEP)
Committee for additional background information.

[]{#__RefHeading___Toc62279737 .anchor}501-2 I Test Data Exchange
Agreements

**Source:** Carryover Item 501-2

**Background/Discussion:** This item was included on the Committee's
agenda in 1998 to provide an update on NTEP's work to establish
bilateral and multilateral agreements. Under such agreements and
arrangements, manufacturers would be able to submit their equipment to
any of the participating countries for testing to OIML‑recommended
requirements. The resulting test data would be accepted by other
participants, as a basis for issuing each country's own type approval
certificate. Following is a report on the three types of test data
exchange agreements.

***Mutual Acceptance Arrangement (MAA):*** At the 2003 Annual Meeting,
Dr. Charles Ehrlich, NIST International Legal Metrology Group, updated
the Committee on the status of the MAA, which has moved from the OIML
subcommittee level to the full International Committee of Legal
Metrology (CIML). Dr. Ehrlich reported that an International Workshop
was held on June 2-3, 2003 in Paris to review and discuss the results of
a straw vote on the 1^st^ Draft Document MAA and the associated
Checklists Document that had been taken of the members of CIML. Only
half of the CIML members voted, but of those voting 80 % had voted
"yes." In order to achieve better consensus, the remaining key issues
were identified and discussed. These included a clarification of the
Scope, who the participants should be, allowance of additional
requirements other than those in OIML Recommendations, and anticipated
costs. The discussions were highly productive and a better mutual
understanding and compromise was achieved. One item that was resolved
was the issue of ***peer*** review, including on-site assessments in
lieu of laboratory accreditation. It is anticipated that the MAA and
Checklists Document will be adopted by the CIML at its annual meeting in
November 2003. Please contact Dr. Ehrlich for further details. The MAA
and Checklists documents can be downloaded from a specially-created WMD
web site (<http://ts.nist.gov/ts/htdocs/230/235/ilmg/oiml_maa.htm>).

The NTEP Committee continues to closely follow the development of the
MAA and encourages interested parties to provide comments to the
Secretariat. See the 2002 Final Report of the NTEP Committee for
additional background information.

***Bilateral Agreements:*** During the 2003 NCWM Interim Meeting,
Stephen Patoray, NTEP Director, reported that there was no additional
information on possible bilateral agreements. NTEP is awaiting the
outcome of the MAA deliberations before further pursuing bilateral
agreements.

***NTEP-Canada Mutual Recognition Program***: At the 2003 NCWM Annual
Meeting, NTEP Director Stephen Patoray and NTEP Chairman Louis Straub
announced that Measurement Canada and the NTEP Participating
Laboratories are ready to accept NTEP applications for retail motor-fuel
dispensers.

See the 2002 Final Report of the NTEP Committee for additional
background information.

[]{#__RefHeading___Toc62279738 .anchor}501-3 I Adoption of Uniform
Regulation for National Type Evaluation by States

**Source:** Carryover Item 501-3

**Background/Discussion:** For many years, the Scale Manufacturers
Association (SMA) has hosted NTEP adoption and implementation meetings
for state directors at each regional weights and measures association
conference. These meetings enable jurisdictions to share information
about adopting and implementing NTEP in their respective jurisdictions,
encourage non-NTEP jurisdictions to adopt the regulation, and allow
current NTEP jurisdictions to share ideas on how to make enforcement
more effective and uniform among the States. The meetings also provide
NTEP management with information related to areas in which the operation
and implementation of the program can be improved. Several questions
have been posed at these meetings about issues associated with NTEP
interpretation or practice. Comments from 1997 to 2002 have been
summarized, without attribution, and are available for review and
download on the SMA web site at
[http://www.scalemanufacturers.org](http://www.scalemanufacturers.org/).

At the 2002 NCWM Annual Meeting, the SMA reported that it was developing
two new standards for weighing devices. The first standard was to define
a uniform procedure to access the parameter and calibration counters for
Category 1 and 2 scale sealing methods and the event loggers in the
Category 3 scale sealing method. Specific requirements for the software
sealing methods are contained in NIST Handbook 44 paragraph G-S.8.
Provision for Adjusting Electronic Adjustable Components. At the 2003
Interim Meeting, Daryl Tonini, SMA, announced that the SMA standard for
software sealing had been finalized and was available on the SMA web
site for manufacturers interested in voluntarily using a standard method
of accessing audit trail information and for weights and measures
officials interested in ongoing efforts to standardize audit trail
access information. The second SMA standard, updating RFI/EMI field test
procedures to reflect current technology, was withdrawn.

SMA upgraded the standard titled Recommendation on Electrical
Disturbances (SMA RED-0499) from "provisional" to "full" status and
developed a new standard titled Vehicle Scale Characterization. The
Vehicle Scale Characterization standard provides criteria for
characterizing the service life of a vehicle scale based on the
concentrated load capacity (CLC) rating of the platform. Potential scale
owners and operators can use this knowledge to select the proper vehicle
scale for a given application. The final versions of the Vehicle Scale
Characterization and the Recommendation on Electrical Disturbances
standards are available on the SMA web site.

At the 2003 NCWM Annual Meeting, Daryl Tonini, SMA, updated the NTEP
Committee on the status of SMA\'s drive to assist States to adopt the
Uniform Regulation for National Type Evaluation (URNTE) and the Uniform
Regulation for the Voluntary Registration of Servicepersons and Service
Agencies (VRR). It was reported that the Kentucky URNTE and VRR were
adopted and became effective on July 1, 2003. Additionally, Michigan
completed work on its weights and measures regulation to adopt the URNTE
and VRR. SMA also provided the Committee with a copy of the United
States map depicting state adoption of the URNTE and VRR. An updated
copy of this map (April 2003) has been included as Appendix A of the
Final Report of the NTEP Committee.

At the 2003 NCWM Annual Meeting, Louis Straub announced that the
Maryland Department of Agriculture Weights and Measures Section
submitted a regulation package to adopt a voluntary registered service
agency registration program partially based upon the NCWM VRR standard.

See the 2002 Final Report of the NTEP Committee for additional
background information.

[]{#__RefHeading___Toc62279739 .anchor}501-4 I NTEP Policy: Challenges
to a Certificate of Conformance and Verification that Production Meets
Type

**Source:** Carryover Item 501-4

**Background:** This item has been moved to the NCWM Board of Directors
Interim Agenda. See the 2002 Final Report of the National Type
Evaluation Program Committee for additional background information.

[]{#__RefHeading___Toc62279740 .anchor}501-5 I NTEP Participating
Laboratories and Evaluations Reports

**Source:** Carryover Item 501-5

**Background:** NTEP Director Stephen Patoray provided the Committee
with a report of the NTEP laboratory and administrative activities from
October 1, 2001 to June 2003. Mr. Patoray reported that the number of
NTEP applications to date is in line with projected numbers. A report of
NTEP Laboratory Activities was distributed to the NTEP Committee at the
2003 NCWM Annual Meeting and is included in the Final Report of the NTEP
Committee in Appendix B.

At the 2003 NCWM Interim Meeting, Mr. Patoray reported that a policy to
expedite the process for issuing a CC after a device completes a
successful evaluation went into effect on January 1, 2003, for NTEP
applicants that desire the expedited CC process. The optional NTEP
process is in response to concerns from manufacturers that the delay
between the date an evaluation was completed and the date CC numbers
were assigned would hold up production and distribution of devices. In
summary, the plan requires an applicant and NTEP to agree upon the
testing to be performed and the contents of a draft CC *prior* to the
start of an evaluation. The final CC and number would be ready for
signature and distribution at the conclusion of a successful evaluation.
The plan was discussed at the 2002 National Type Evaluation Technical
Committee (NTETC) Sectors and BOD meetings.

At the 2003 NCWM Annual Meeting, Mr. Patoray reported on an April 2003
joint meeting of the NTEP Weighing and Measuring Laboratories and the
Canadian Participating Laboratories in Sacramento, CA. The laboratories
discussed several items including recommendations on mix-and-match
components for liquid-measuring devices, updating the mutual recognition
applications and checklists, and suggested "device types" to be listed
on Certificates of Conformance (CC) for both weighing and measuring
devices. Many of these items will be developed as proposals for
consideration at the 2003 meetings of the NTETC Weighing and Measuring
Sectors.

See the 2002 final report of the NTEP Committee for additional
background information.

[]{#__RefHeading___Toc62279741 .anchor}501-6 I NTETC Sectors Reports

**Source:** Carryover Item 501-6

**Background:** The Committee received an update on the activities of
the National Type Evaluation Technical Committee (NTETC) Sectors at the
2003 NCWM Interim Meeting. Outlined below is a brief summary of Sector
activities since the 2002 NCWM Annual Meeting.

***Grain Moisture Meter and NIR Protein Analyzer Sectors:*** The NTETC
Grain Moisture Meter and NIR Protein Analyzer Sectors held a joint
meeting in Kansas City, MO on August 21-23, 2002. A summary of these
joint meetings was distributed to Sector members in October 2002. A
draft of the final summary was provided to the Committee prior to the
2003 NCWM Interim Meeting for review and approval. The Committee
reviewed the draft and accepted the recommendations from the Sectors.

The next meeting of the Grain Moisture Meter and NIR Protein Analyzer
Sectors is scheduled for August 20-22, 2003, in Kansas City, MO. For
questions on the current status of Sector work or to propose items for a
future meeting, please contact the Sector Technical Advisors, Diane Lee,
NIST WMD, or Jack Barber, J.B. Associates. Ms. Lee can be reached by
telephone at 301-975-4405, by fax at 301-926-0647, by e-mail at
<diane.lee@nist.gov>, or in writing at NIST, 100 Bureau Drive - Stop
2600, Gaithersburg, MD 20899-2600. Mr. Barber can be reached by
telephone at 217-483-4232, by fax at 217-483-3712, by e-mail at
<jbarber@cityscape.net>, or in writing at J.B. Associates, 10349 Old
Indian Trail, Glenarm, IL 62536.

[]{.mark}

***Measuring Sector:*** The NTETC Measuring Sector met October 11-12,
2002, in Richmond, VA. A draft of the final summary of that meeting was
distributed to the Sector in January 2003. A draft of the final summary
was also provided to the NTEP Committee prior to the 2003 NCWM Interim
Meeting for review and approval. The Committee reviewed the draft and
accepted the recommendations of the Sector.

The next meeting of the Measuring Sector is scheduled for October 3-4,
2003, in Charlotte, NC, in conjunction with the Southern Weights and
Measures Association's Annual Meeting. For questions on the current
status of Sector work or to propose items for a future meeting, please
contact the Sector Technical Advisor Richard Suiter, NIST WMD. Mr.
Suiter can be reached by telephone at 301-975-4406, by fax at
301-926-0647, by e-mail at <rsuiter@nist.gov>, or in writing at NIST,
100 Bureau Drive - Stop 2600, Gaithersburg, MD 20899-2600.

[]{.mark}

***Weighing Sector:*** The NTETC Weighing Sector met September 30 -
October 2, 2002, in Annapolis, MD. A draft summary was distributed to
Sector members in early December 2002. A final draft of the meeting
summary was also provided to the Committee prior to the 2003 NCWM
Interim Meeting for review and approval. The Committee did not accept
the recommendation of the Sector on agenda item 23 titled Inconsistent
Language on a CC. The Sector had suggested a list of consistent
information that should be included on a Certificate of Conformance for
NCWM Publication 14 Administrative Procedures paragraph P. Certificate
of Conformance. The Committee disagreed with the Sector and stated that
the Sector recommendation is a technical procedural issue and does not
affect the administration of NTEP. The Committee returned this item to
the Sector and suggested that it develop language for NCWM Publication
14 Technical Policies at their 2003 meeting. The Committee accepted the
remaining recommendations (with minor editorial corrections identified
by the Committee) in the final draft of the meeting summary.

The next Weighing Sector meeting is scheduled for September 11-13, 2003,
in Fresno, CA, and will be held in conjunction with the Western Weights
and Measures Association's Annual Meeting. For questions on the current
status of Sector work or to propose items for a future meeting, please
contact the Sector Technical Advisor Steven Cook, NIST WMD. Mr. Cook can
be reached by telephone at 301-975-4003, by fax at 301-926-0647, by
e-mail at <stevenc@nist.gov>, or in writing at NIST, 100 Bureau Drive -
Stop 2600, Gaithersburg, MD 20899-2600.

***Automatic Weighing Systems Working Group (AWS):*** The AWS Working
Group met on October 2-3, 2002, in Annapolis, MD, following the meeting
of the NTETC Weighing Sector and responded to remaining issues related
to a proposal to change the status of the tentative AWS Code in NIST
Handbook 44. The Work Group dealt with several items related to the
current NCWM Publication 14 NTEP Draft Checklist and Test Criteria. The
AWS Work Group made several suggestions for amending language in
Handbook 44 and submitted their recommendations to the NCWM S&T
Committee and the NTEP Committee prior to the 2003 NCWM Interim Meeting.
Contact Stephen Patoray, NTEP Director, or NIST WMD Technical Advisor,
Steve Cook, to request a copy of the proposed changes. Mr. Patoray can
be reached by email at <spatoray@mgmtsol.com>. Steve Cook can be reached
by telephone at 301-975-4003, by fax at

301-926-0647, by email at <steven.cook@nist.gov>, or in writing at NIST,
100 Bureau Drive-Stop 2600, Gaithersburg, MD 20899-2600.

***NTETC Sector Summaries:*** At the 2002 Annual Meeting, Mr. Straub
discussed the whether or not it is necessary to publish the NTETC
Sectors summaries as part of the Interim Committee Reports. The
summaries currently account for more than one third of the size of the
publication. The NCWM Board of Directors and NTEP Committee agreed that
the Sector summaries do not need to be published in hard copies of the
NCWM Interim Committee Reports for the Annual Meeting. The NTEP
Committee will receive copies of the summaries prior to the NCWM Interim
Meeting for their review and approval. The NTETC Sector summaries will
continue to be included as appendices in the NCWM Annual Reports.

At the 2003 NCWM Interim Meeting, the NCWM Board of Directors and NTEP
Committee agreed that electronic copies of the NTETC Sector summaries
would be included in electronic versions of NCWM Publication 16
Committee Reports for the Annual meeting. Electronic or hard copies of
the NTETC Sector summaries are available upon request from NCWM and
NIST. Contact NCWM Inc., or NIST WMD Technical Advisor, Steve Cook, to
request electronic or hard copies of the NTEP Sector Summaries. NCWM
Inc. can be reached by phone at 240-632-9454 or by email at
<ncwm@mgmtsol.com>. Steve Cook can be reached by telephone at
301-975-4003, by fax at 301-926-0647, by email at
<steven.cook@nist.gov>, or in writing at NIST, 100 Bureau Drive-Stop
2600, Gaithersburg, MD 20899-2600.

[]{#__RefHeading___Toc62279742 .anchor}501-7 I Grain Moisture Meter
(GMM) and Near Infrared (NIR) Instruments Dual Certification -- Can a
Single Certificate be Issued?

**Source:** NTETC GMM and NIR Sector

**Background:** Of the five Grain Moisture Meter (GMM) types with active
NTEP Certificates of Conformance (CCs), two are whole-grain Near
Infrared (NIR) Instruments with the potential to seek certification as
NIR Grain Analyzers. In a previous Sector meeting, the question was
raised as to whether a single CC could be issued to cover devices
certified as both GMMs and NIR Grain Analyzers. Time constraints caused
consideration of this question to be postponed to a future meeting.

In deciding whether a single CC could be issued to cover devices
certified as both GMMs and NIR Grain Analyzers, there are two
requirements to consider:

1)  CCs for GMMs automatically expire July 1. To maintain \"active\"
    status, meters must remain in the NTEP ongoing calibration program
    and the CC\'s must be reissued annually with valid calibration
    constants for moisture.

2)  NIR Grain Analyzers that display a measured whole grain moisture
    value are required to comply with the requirements of the GMM Code
    and be type approved as a grain moisture meter.

When an instrument has been approved under both codes, it would seem
that NIR Grain Analyzer CCs are subordinate to GMM CC's, because failure
to maintain an "active" GMM CC would automatically invalidate the
corresponding NIR Grain Analyzer CC. A single CC, such as a "GMM CC with
NIR Grain Analyzer Certification" would have to be reissued annually
(and whenever a calibration change is made) so there would be no
ambiguity regarding the NTEP status of the instrument and its
calibrations. With a single Certificate, weights and measures personnel
would have only one CC number to check. Manufacturers would have only
one CC to maintain per instrument type. Marking requirements would be
simplified. The maintenance fee structure for a CC with a
"certification" for compliance with another code could be set to recover
any loss in NCWM, Inc. revenue that would result from the elimination of
the second certificate.

The Sector agreed to ask the NTEP Committee to consider recommending
that NCWM, Inc. authorize issuing a single CC for devices successfully
type evaluated using two inter-related codes (e.g., a "Grain Moisture
Meter CC with Near Infrared Grain Analyzer Certification" or, simply,
"NIR Grain Analyzer with Dual Certification").

The NTEP Committee reviewed the recommendation during the 2003 NCWM
Interim Meeting in Jacksonville, FL. and accepted the Sector
recommendation to issue a single Certificate of Conformance for a device
that has been evaluated using two inter-related codes.

L. Straub, Maryland, Chairman

R. Andersen, New York, NCWM Chairman

D. Ehrhart, Arizona, NCWM Chairman-Elect

D. Onwiler, Nebraska

M. Gray, Florida

NTEP Technical Advisor: S. Patoray, NTEP Director

NIST Technical Advisor: S. Cook, NIST WMD

**National Type Evaluation Program Committee**

# Appendix A

## ![](media/image1.png){width="0.74251968503937in" height="0.602755905511811in"}NTEP Status by State

# Appendix B

## NTEP Participating Laboratories and Evaluations Report

+---------------------------------------+----------+---+---+----------+
| **NTEP Application Statistics - June  |          |   |   |          |
| 2003**                                |          |   |   |          |
+---------------------------------------+----------+---+---+----------+
|                                       | **200    | * |   | *        |
|                                       | 1-2002** | * |   | *Total** |
|                                       |          | 2 |   |          |
|                                       |          | 0 |   |          |
|                                       |          | 0 |   |          |
|                                       |          | 2 |   |          |
|                                       |          | - |   |          |
|                                       |          | 2 |   |          |
|                                       |          | 0 |   |          |
|                                       |          | 0 |   |          |
|                                       |          | 3 |   |          |
|                                       |          | * |   |          |
|                                       |          | * |   |          |
+---------------------------------------+----------+---+---+----------+
|                                       | **1      | * |   | **10     |
|                                       | 0/1/01** | * |   | /1/00-** |
|                                       |          | 1 |   |          |
|                                       | **6      | 0 |   | **6      |
|                                       | /19/02** | / |   | /19/03** |
|                                       |          | 1 |   |          |
|                                       |          | / |   |          |
|                                       |          | 0 |   |          |
|                                       |          | 2 |   |          |
|                                       |          | - |   |          |
|                                       |          | 6 |   |          |
|                                       |          | / |   |          |
|                                       |          | 1 |   |          |
|                                       |          | 9 |   |          |
|                                       |          | / |   |          |
|                                       |          | 0 |   |          |
|                                       |          | 3 |   |          |
|                                       |          | * |   |          |
|                                       |          | * |   |          |
+---------------------------------------+----------+---+---+----------+
| Applications Processed                | 230      | 1 |   | 687(41)  |
|                                       |          | 8 |   |          |
|                                       |          | 8 |   |          |
+---------------------------------------+----------+---+---+----------+
| Applications Completed                | 182      | 6 |   | 466      |
|                                       |          | 7 |   |          |
+---------------------------------------+----------+---+---+----------+
| New Certificates Issued               | 193      | 1 |   | 636      |
|                                       |          | 6 |   |          |
|                                       |          | 4 |   |          |
+---------------------------------------+----------+---+---+----------+
| Certificates Distributed to State     | 187      | 1 |   | 618      |
| Directors                             |          | 6 |   |          |
|                                       |          | 0 |   |          |
+---------------------------------------+----------+---+---+----------+
| Certificates Posted To Web Site       | 1103     | 1 |   | 3148     |
|                                       |          | 5 |   |          |
|                                       |          | 8 |   |          |
+---------------------------------------+----------+---+---+----------+
| Active NTEP Certificates              | \-       | \ |   | 1549     |
|                                       |          | - |   |          |
+---------------------------------------+----------+---+---+----------+
|                                       | ### **A  |   | # |          |
|                                       | verage** |   | # |          |
|                                       |          |   | # |          |
|                                       |          |   |   |          |
|                                       |          |   | * |          |
|                                       |          |   | * |          |
|                                       |          |   | M |          |
|                                       |          |   | e |          |
|                                       |          |   | d |          |
|                                       |          |   | i |          |
|                                       |          |   | a |          |
|                                       |          |   | n |          |
|                                       |          |   | * |          |
|                                       |          |   | * |          |
+---------------------------------------+----------+---+---+----------+
| Time For NCWM To Assign An Evaluation | 12 days  |   | 8 |          |
|                                       |          |   | d |          |
|                                       |          |   | a |          |
|                                       |          |   | y |          |
|                                       |          |   | s |          |
+---------------------------------------+----------+---+---+----------+
| Time For NCWM To Review A Draft       | 8 days   |   | 6 |          |
| Certificate                           |          |   | d |          |
|                                       |          |   | a |          |
|                                       |          |   | y |          |
|                                       |          |   | s |          |
+---------------------------------------+----------+---+---+----------+
| Time For Complete Evaluation          | 145 days |   | 1 |          |
| (Completed NCWM Assignments)          |          |   | 0 |          |
|                                       |          |   | 1 |          |
|                                       |          |   | d |          |
|                                       |          |   | a |          |
|                                       |          |   | y |          |
|                                       |          |   | s |          |
+---------------------------------------+----------+---+---+----------+

# Appendix C

## National Type Evaluation Technical Committee (NTETC)

## Grain Moisture Meter (GMM) Sector

> **August 21-22, 2002 - Kansas City, MO**
>
> **Meeting Summary**
>
> **Agenda Items**

+---+---------------------------------------------------------------------+
|   | 1.  NIST/Office of Weights and Measures Reorganization              |
+---+---------------------------------------------------------------------+
|   | 2.  Report on Proposed Revisions to OIML IR 59 \"Moisture Meters    |
|   |     for Cereal Grains and Oilseeds\"                                |
+---+---------------------------------------------------------------------+
|   | 3.  Proposed Changes and Additions to Publication 14                |
|   |                                                                     |
|   | > a\. Identification Marking Requirements                           |
|   | >                                                                   |
|   | > b\. Miscellaneous Editorial Changes                               |
+---+---------------------------------------------------------------------+
|   | 4.  Update on Field Evaluation of Proposed Test Weight per Bushel   |
|   |     Tolerances                                                      |
|   |                                                                     |
|   | > a\. Review of Phase I and Phase II data                           |
|   | >                                                                   |
|   | > b\. Proposal to move the Developing Issue for Test Weight per     |
|   | > Bushel forward as a Voting Item                                   |
+---+---------------------------------------------------------------------+
|   | 5.  Review Latest Draft of Evaluation Procedure Outline (EPO) and   |
|   |     Test Procedures for the Field Evaluation of NTEP GMM Devices    |
|   |     (air-oven method)                                               |
+---+---------------------------------------------------------------------+
|   | 6.  A Message from the NCWM Board of Directors                      |
+---+---------------------------------------------------------------------+
|   | 7.  Update on NTEP Type Evaluation and OCP (Phase II) Testing       |
+---+---------------------------------------------------------------------+
|   | 8.  A Quality Control Procedure for Grain Analysis at a Country     |
|   |     Elevator                                                        |
+---+---------------------------------------------------------------------+
|   | 9.  Time and Place for Next Meeting                                 |
+---+---------------------------------------------------------------------+

**Note:** Because of common interest, items marked with a star () will
be considered in joint session of the NIR Grain Analyzer and the Grain
Moisture Meter Sectors.

1.  **NIST/Office of Weights and Measures Reorganization**

**Discussion:** As part of a broader reorganization within NIST
Technology Services (TS), the Office of Weights and Measures (OWM) has
been raised from the program level with the Office of Measurement
Services (now the Measurement Services Division) to the Division level
within the TS organization structure. Henry Oppermann has been named
Chief of the new Weights and Measures Division. In addition to national
weights and measures matters, OWM will be responsible for NIST's Metric
Program and for international matters relating to legal metrology,
including U.S. participation in the OIML. This will provide a closer tie
between national and international interests in standards matters.

**2. Report on Proposed Revisions to OIML IR 59 \"Moisture Meters for
Cereal Grains and Oilseeds\"**

**Background:** At the OIML TC17/SC1 meeting in Berlin, Germany on June
22, 2001, the U.S. delegation, put forth a series of proposals relating
to the revision of OIML Recommendation IR 59 \"Moisture Meters for
Cereal Grains and Oilseeds.\" The U.S. proposals are summarized below:

> *Document Purpose*. - The purpose of the revision of IR 59 is to
> define technical and metrological requirements for type approval and
> verification of measuring instruments using physical principles to
> determine the moisture content of cereal grains and oil seeds. These
> type-approved instruments are intended to be used for moisture
> measurements in commercial transactions.
>
> *Document Application*. - This document is to be developed for
> implementation in the OIML Certificate System, therefore necessitating
> an internationally agreed test procedure and test report format.
>
> *Document Direction*. - The document should be developed for fully
> automatic direct indicating moisture meters. This means instruments
> for which all necessary measurements are internal and are
> self-calculating. Directions for dealing with instruments of
> comparable accuracies but a lesser degree of automation would be
> contained in an annex. This would define a direction for future
> instruments without precluding existing instruments.
>
> *Maximum Permissible Errors (MPES). -* The testing of the instruments
> should be carried out with naturally occurring grain samples and the
> evaluation of instrument errors will be conducted statistically. Grain
> samples have a large degree of natural variability due to region and
> climate. A statistical evaluation accounts for this natural
> variability and is consistent with the U.S. NTEP program.
>
> *Moisture Reference Method*. - The state-of-the-art in grain moisture
> reference methods has not reached international consensus and
> application on the best method. The U.S. uses a documented GIPSA air
> oven reference method and several other methods exist and are utilized
> internationally. All of these methods suffer to some extent in their
> absolute accuracy. The U.S. believes that it would be best to separate
> the international type approval of instruments from the definition of
> the reference method and proposes that the reference method should be
> established by the national legal metrology authority in that country
> and that manufacturers submitting for type approval in that country
> should take into account the national reference in the calibration of
> the type approved instrument.

The U.S. proposals were well received, in particular by France, the
previous Secretariat, and Germany. Dr. Gunter Scholtz of
Physikalisch-Technische Bundesanstalt (PTB), who chaired the meeting,
asked the USA to prepare an OIML draft based on the U.S. NTEP program
for review by an IWG composed of France, Germany, Poland, China and the
USA. The U.S. agreed to this.

**Discussion:** The Sector reviewed a partial draft of Revised IR59
(dated August 2002) prepared by Dr. Ambler Thompson of NIST. Sector
members offered the following comments and suggestions:

> 1\. No moisture ranges have been specified for any of the type
> approval tests. Although some of the tolerances presently suggested
> are broader than those in Publication 14, it was pointed out that the
> type approval tolerances in Publication 14 are based on testing
> specific grains over a specified 6 % moisture range (12 %-18 % for
> corn; 10 %-16 % for all wheats, soybeans, sorghum, oats, barley and
> rice; and 6 %-12 % for sunflower). Sample condition, moisture range,
> and individual grain characteristics all influence the performance of
> a grain moisture meter and have to be considered in establishing
> realistic tolerances. Testing at higher moisture levels may cause
> problems due to sample instability. Sample instability is especially
> troublesome on tests involving temperature cycling of the samples and
> on long-term stability tests where samples must be stored for an
> extended period of time. If Handbook 44 tolerances are specified in
> place of the existing OIML Maximum Permissible Errors (MPES), type
> approval testing should be limited to the grain types and moisture
> ranges specified in Publication 14.
>
> 2\. There appear to be fundamental differences between the U.S. and
> proposed OIML approach to moisture meter type approval. In the U.S.
> initial type evaluation focuses on the instrument itself. Basic
> instrument tests, which include all of the influence factors listed in
> Section 5.6.1 of IR59, except grain temperature sensitivity, are
> conducted using only hard red winter wheat. Calibrations for corn, HRW
> wheat and soybeans are initially approved based upon type evaluation
> testing over a 6 % moisture range and manufacturer supplied data over
> the remainder of the calibration range. Calibrations for other grains
> are approved based upon data collected as part of the ongoing national
> calibration program. Continued type approval requires participation in
> the ongoing national calibration program. Over the moisture range for
> each of the grains for which a meter is approved, none of the average
> differences between predicted and reference values for the respective
> 2 % moisture intervals can exceed one-half the Handbook 44 acceptance
> tolerance plus a 95 % confidence interval. Revised IR 59 proposes to
> subject all grains to all influence factors over unspecified moisture
> ranges.
>
> 3\. No field evaluation method has been specified. Appropriate values
> for MPES will depend on the field test method used (meter-to-meter vs.
> air-oven, number of replicates, sample selection, etc.). The field
> test method on which the MPES are based should be referenced.
>
> 4\. Section 3. Terminology. - Definitions of terms appearing in the
> "Terminology" section should be replaced with corresponding
> definitions from Handbook 44.
>
> 5\. Section 3.2. Moisture and Volatile Matter Content. - The need for
> a definition of "moisture and volatile matter content" was questioned.
> It was recommended that this term be dropped from the definitions, and
> that the possible loss of mass due to volatile matter content (other
> than water) be addressed in a footnote if necessary.
>
> 6\. Section 3.4. Conversion Tables. - The definition shown is the
> Handbook 44 definition for "Correction Tables." Fully automated grain
> moisture meters do not require the use of either Correction Tables or
> Conversion Tables. If the purpose of defining Conversion Tables is to
> cover terminology that will be used in an annex to IR 59, then a
> definition of Correction Tables should also be included.
>
> 7\. Section 3.5. Zero Value and Test Value. - This paragraph states
> that moisture meters may give a (zero) indication. The Sector noted
> that there is no allowance for a zero indication in Section 5.56.(a)
> of Handbook 44. Paragraph S.1.1.(d) states:
>
> A digital indicating element shall not display, and a recording
> element shall not record, any moisture content values before the end
> of the measurement cycle.
>
> Paragraph S.1.1.(f) further states:
>
> A meter shall not display or record any moisture content values when
> the moisture content of the grain sample is beyond the operating range
> of the device, unless the moisture representation includes a clear
> error indication (and recorded error message with the recorded
> representation).
>
> To comply with these requirements, several manufacturers have chosen
> to blank the moisture display when the test cell is empty (and do not
> display a "zero"). A moisture value is not displayed until the end of
> the measurement cycle. Even though the present wording of 3.5 is
> permissive ("may" display a zero), it would be preferable to include
> additional wording to indicate that direct reading instruments "may
> but are not required to display a (zero) indication."
>
> 8\. Section 3.6. Test Value. - The wording of this section needs to be
> revised to make it clear that test values are produced by a meter's
> built-in self-test features to verify the correct functioning of those
> elements having a critical effect on the measurement. Grain samples
> are not required for these self-tests.
>
> 9\. Section 5.3.2. MPES During Type Approval Testing, Including All
> Influence Quantity Testing, and on Initial Verification. - The
> equations add 0.2 % to the MPES for all tests, but Paragraph 5.6.1.
> shows ΔM = 0.35 % for both instrument temperature sensitivity and
> grain temperature sensitivity tests and ΔM = 0.20 % for the other
> influence factor tests.
>
> 10\. Sections 5.5.4 and 5.5.5. - The reference to "MPES in 5.5.1"
> should be changed to read, "MPES in 5.3.1".
>
> 11\. Section 5.6.1. - The reference to "relevant conditions specified
> in 5.3" for influence factor testing appears to be in error. Paragraph
> 5.6.2 states, "A description of performance tests for influence
> factors is given in Annex B." Should 5.6.1 reference "relevant
> conditions specified in Annex B" or will a table of relevant
> conditions be added elsewhere?
>
> 12\. Section 6.2 does not mention near-infrared absorbance as one of
> the possible quantities that may be related to moisture.

**Conclusion:** Dr. Thompson asked Sector participants and manufacturers
to submit additional comments, especially those related to test
procedures and MPES, within the next two months so he can obtain a
consensus from interested U.S. parties and complete another draft by
December. Dr. Thompson can be reached at the following address:

> Dr. Ambler Thompson
>
> NIST/TSAP
>
> NIST North (820) Room 248
>
> 100 Bureau Drive, Stop 2150
>
> Gaithersburg, MD 20899
>
> e-mail: <ambler@nist.gov>

**3. Proposed Changes and Additions to Publication 14**

> **3.a. Identification Marking Requirements**
>
> **Discussion:** The 86^th^ National Conference on Weights and Measures
> (NCWM) in 2001 adopted changes to the General Code section of Handbook
> 44 that require corresponding changes to the Grain Moisture Meter
> Check List in Publication 14. The changes include:

-   A specification of acceptable abbreviations for the word "Model"

-   A requirement that devices be permanently marked with the applicable
    Certificate of Conformance (CC) number or a corresponding CC
    addendum number.

> \[For a detailed discussion of the above changes see the report 86^th^
> NCWM. NIST *Special Publication 976*.\]
>
> Because grain moisture meter (GMM) CCs are reissued annually with
> incremented addendum numbers, the Sector considered whether devices
> should be marked with only the original "parent" CC number and not
> with the addendum number; for example, \"CC Number 03‑123\" and NOT
> \"CC Number 03-123A4." State Weights and Measures representatives
> indicated that there would be no confusion if CC marking included the
> addendum number. Inspectors would know to refer to the current version
> of the CC regardless of the addendum number marked on the device. It
> was suggested that including the addendum number might be of
> assistance in helping field inspectors determine whether
> nonretroactive requirements applied to a particular device.
>
> Also, paragraph S.1.5. of Handbook 44, Section 5.56.(a) was changed by
> action of the 81^st^ NCWM in 1996 to remove the requirement to mark
> the operating temperature range on the device. The original draft of
> the 2002 issue of the grain moisture meter checklist in Publication 14
> does not reflect this change.
>
> **Conclusion and Recommendation:** The Sector decided that it would
> not be necessary to include a note recommending restricting CC marking
> of GMM's to the "parent" CC number. The Sector agreed to recommend
> amending and modifying Publication 14, GMM Checklist, Section
> 1. General**,** to combine related marking requirements and to address
> the above issues. In addition, the Sector recommended removing the
> requirements for marking the operating temperature range on the device
> and moving the paragraph related to Code Reference G‑S.1.1., to a more
> appropriate location following the list of marking requirements.
> Recommended changes are shown below.
>
> **1.** **General**

**Code Reference: G-S.1. Identification**

Virtually all measuring equipment (except separate parts necessary to
the measurement process but not having any metrological effect) must be
clearly and permanently marked with the manufacturer\'s name or
trademark, model designation, and serial number. Additionally, devices
that have (or will have) an NTEP Certificate of Conformance (CC) Number,
must be marked with the CC number or a corresponding CC addendum number.
\"Permanent\" markings addresses two aspects: (1) the printed
information will withstand wear and cleaning, and (2) if the markings
are on a plate or badge, then the marking badge must be \"permanently\"
attached to the device. A permanently attached badge means that the
identification information required by G-S.1. is not easily removed, and
if removed, then it must be obvious that the badge or plate containing
this information has been removed. All markings must be clear and easily
readable. The following test procedure shall be used to determine the
permanence of the identification markings.

Permanence of Lettering: The lettering for the markings are subjected to
the following tests to simulate accelerated wear. The markings are then
compared with a typical set of labels exhibiting various degrees of
wear, graded from minimal effect (1) to excessive unacceptable wear (7).

Attempts are made to remove the marked information, whether on a badge
(plate) or on the device itself, using the following means.

1\. Rub over one letter of the marking at least 20 times using an ink
eraser in the same manner and force as one would normally exert while
erasing an inscription written with a ball point pen.

2\. Clean the marking or badge with the following cleaners presumed to
be \"readily available.\"

a\. Disinfecting cleaning liquid and a damp cloth.

b\. \"Soft\" household cleaning powder and a damp cloth.

c\. Window cleaning fluids and a damp cloth.

Permanence of Attachment Badge is an attempt to remove the badge by
pulling it off or prying off a metal badge that is attached using only
adhesive; removal must be \"difficult\" at all temperatures. If the
badge can be removed, it must show obvious evidence that the badge was
removed. Acceptable indications are destruction of the badge by tearing,
permanent and extensive wrinkling, or repeated exposure of the word
\"VOID\" upon removal of the badge.

As a practical matter, remote moisture displays are not required to have
serial numbers because they typically only repeat the moisture
information received from the measuring element. Similarly, external
printers are not required to have serial numbers because they do not
alter the information received from the measuring element.

If the required information is located on the back of a device, the same
information must also appear on the side, front, or top. The bottom of a
device is not an acceptable surface for these markings.

The identification marking must be permanent and attached with pop
rivets, adhesive, or other permanent means. Removable bolts or screws
are not permitted. A foil badge may be used provided that it is durable,
difficult to remove, and exhibits obvious evidence of an attempt to
remove the marking or badge.

The system must be clearly and permanently marked on an exterior
surface, visible after installation with the following information:

+----+----------------------------------------------+-----------------+
| 1  | The name, initials or trademark of the       | Yes No NA       |
| .1 | manufacturer. A remote display is required   |                 |
|    | to have the manufacturer\'s name or          |                 |
|    | trademark and model designation. (Code       |                 |
|    | Reference GS.1.(a))                          |                 |
+----+----------------------------------------------+-----------------+
| 1  | A model designation that positively          | Yes No NA       |
| .2 | identifies the pattern or design of the      |                 |
|    | device. The Model designation shall be       |                 |
|    | prefaced by the word "Model", "Type", or     |                 |
|    | "Pattern." These terms may be followed by    |                 |
|    | the term "Number" or an abbreviation of that |                 |
|    | word. The abbreviation for the word "Number" |                 |
|    | shall, as a minimum, begin with the letter   |                 |
|    | "N" (e.g., No or No.). The abbreviation for  |                 |
|    | the word "Model" shall be "Mod" or "Mod."    |                 |
|    | \[Effective January 1, 2003\]. (Code         |                 |
|    | Reference G‑S.1.(b)&(c))                     |                 |
+----+----------------------------------------------+-----------------+
| 1  | A nonrepetitive serial number prefaced by    | Yes No NA       |
| .3 | words "Serial Number" or an abbreviation of  |                 |
|    | that term. Abbreviations for the word        |                 |
|    | "Serial" shall, as a minimum, begin with the |                 |
|    | letter "S," and abbreviations for the word   |                 |
|    | "Number" shall, as a minimum, begin with the |                 |
|    | letter "N" (e.g., S/N, SN, Ser.No, and S     |                 |
|    | No.). (Code Reference G‑S.1.(d),(e), & (f)). |                 |
+----+----------------------------------------------+-----------------+
| 1  | The NTEP Certificate of Conformance (CC)     | Yes No NA       |
| .4 | Number or a corresponding CC addendum number |                 |
|    | for devices that have (or will have) a CC.   |                 |
|    | The number shall be prefaced by the terms    |                 |
|    | "NTEP CC," "CC," or "Approval." These terms  |                 |
|    | may be followed by the term "Number" or an   |                 |
|    | abbreviation of the word "Number". The       |                 |
|    | abbreviation shall, as a minimum, begin with |                 |
|    | the letter "N" (e.g., No or No.). (Code      |                 |
|    | Reference G-S.1.(g). Effective January 1,    |                 |
|    | 2003).                                       |                 |
|    |                                              |                 |
|    | The device must have an area, either on the  |                 |
|    | identification plate or on the device        |                 |
|    | itself, suitable for the application of the  |                 |
|    | CC number. If the area for the CC number is  |                 |
|    | not part of an identification plate, note    |                 |
|    | its intended location and how it will be     |                 |
|    | applied.                                     |                 |
|    |                                              |                 |
|    | Location of CC Number if not located with    |                 |
|    | the identification information:              |                 |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_         |                 |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ |                 |
+----+----------------------------------------------+-----------------+
| 1  | If the information required by G-S.1. is     | Yes No NA       |
| .5 | placed on a badge or plate, the badge or     |                 |
|    | plate must be permanently attached to the    |                 |
|    | device.                                      |                 |
|    |                                              |                 |
|    | (See criteria above for permanence of        |                 |
|    | Attachment of Badge.)                        |                 |
+----+----------------------------------------------+-----------------+
| 1  | Identifying information shall be so located  | Yes No NA       |
| .6 | that it is readily observable without the    |                 |
|    | necessity of the disassembly of a part       |                 |
|    | requiring the use of any means separate from |                 |
|    | the device.                                  |                 |
+----+----------------------------------------------+-----------------+
| 1  | All markings must be clear and easily        | Yes No NA       |
| .7 | readable.                                    |                 |
+----+----------------------------------------------+-----------------+
| 1  | The lettering for all markings must be       | Yes No NA       |
| .8 | permanent. Record the grade for the          |                 |
|    | permanence of markings.                      |                 |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.        |                 |
+----+----------------------------------------------+-----------------+
| 1  | If the markings for other than device        | Yes No NA       |
| .9 | identification required by G-S.1. are placed |                 |
|    | on a badge or decal, then the badge or decal |                 |
|    | must be durable (difficult to remove at all  |                 |
|    | temperatures).                               |                 |
+----+----------------------------------------------+-----------------+

> Code Reference: G-S.1.1. Remanufactured Devices and Remanufactured
> Main Elements.
>
> Refer to the Section Policy on Remanufactured and Repaired Devices in
> the NCWM Publication 14 Administrative Policy.

  ------ ----------------------------------------------- ------------------
  1.10   If the manufacturer specifies a temperature     Yes No NA
         range, the range shall be at least 20 °C (36    
         °F).                                            

  ------ ----------------------------------------------- ------------------

> **3.b. Miscellaneous Editorial Changes**
>
> **Discussion:** The Sector reviewed the original draft of the 2002
> issue of the grain moisture meter checklist in Publication 14. Several
> typographical errors were noted.
>
> **Recommendation:** The Sector recommended changes to correct
> typographical errors. The Sector also recommended changing formulas to
> use a "bar" over variables that are intended to indicate an "average"
> or "mean". Recommended changes are shown below.
>
> **Accuracy**. The two tests for accuracy are bias (meter versus oven)
> and the Standard Deviation of the Differences (SDD) between the meter
> and the air oven for each of the 2 % moisture intervals. Each
> instrument will be individually tested.

$$\text{Bias} = \frac{\sum_{i = 1}^{n}{({\overline{x}}_{i} - r_{i})}}{n}$$

> where,
>
> ${\overline{x}}_{i}$ = average predicted moisture content for sample
> *i* (3 replicates)
>
> $r_{i}$ = reference moisture content for sample *i*
>
> $n$ = number of samples per 2 % moisture interval ($n$= 10)

$$\text{SDD} = \sqrt{\frac{\sum_{i = 1}^{n}{(y_{i} - \overline{y})^{2}}}{n - 1}}$$

> where,
>
> $y_{i}$= ${\overline{x}}_{i} - r_{i}$ (see above)
>
> $\overline{y}$ = average of the *y~i~*
>
> $n$ = number of samples per 2 % moisture interval ($n$= 10)
>
> Tolerances for both of these tests will be one-half the Handbook 44
> acceptance tolerance for the appropriate 2 % interval. Use the maximum
> acceptance tolerance for intervals where the tolerance changes with
> the moisture content, (i.e., in the 16 %-18 % interval for corn use
> 0.5 x 0.05 x 18 = 0.45 for the tolerance). Specific tolerances are:

+-----------------------+-----------------------+-----------------------+
| Grain Type            | Moisture Content      | > Tolerance           |
+-----------------------+-----------------------+-----------------------+
| Corn                  | 12-14 %               | 0.40                  |
|                       |                       |                       |
|                       | 14-16 %               | 0.40                  |
|                       |                       |                       |
|                       | 16-18 %               | 0.45                  |
+-----------------------+-----------------------+-----------------------+
| HRW wheat             | 10-12 %               | 0.35                  |
|                       |                       |                       |
| and                   | 12-14 %               | 0.35                  |
|                       |                       |                       |
| Soybeans              | 14-16 %               | 0.35                  |
+-----------------------+-----------------------+-----------------------+

> The manufacturer may adjust the calibration bias to compensate for
> differences from the type evaluation laboratory in reference methods
> or sample sets.
>
> **Repeatability**. The Standard Deviation (SD) of the three replicates
> will be calculated for each sample in a 2 % moisture interval and
> pooled across samples. Each instrument will be tested individually.
> The equation used to calculate SD is:

$$\text{SD} = \sqrt{\frac{\sum_{i = 1}^{n}{\sum_{j = 1}^{3}{(P_{\text{ij}} - {\overline{P}}_{i})^{2}}}}{2n}}$$

> where,
>
> $P_{\text{ij}}$= predicted moisture for sample *i* and replicate *j*
>
> ${\overline{P}}_{i}$= average of the three predicted moisture values
> for sample *i*
>
> $n$ = number of samples per 2 % moisture interval ($n$= 10)
>
> Tolerances for repeatability are 0.25 x the maximum Handbook 44
> acceptance tolerance for the 2 % moisture interval. Specific
> tolerances are:

+-----------------------+----------------------+----------------------+
| Grain Type            | Moisture Range       | > Tolerance          |
+-----------------------+----------------------+----------------------+
| Corn                  | 12-14 %              | > 0.200              |
|                       |                      | >                    |
|                       | 14-16 %              | > 0.200              |
|                       |                      | >                    |
|                       | 16-18 %              | > 0.225              |
+-----------------------+----------------------+----------------------+
| HRW wheat             | 10-12 %              | > 0.175              |
|                       |                      | >                    |
| and                   | 12-14 %              | > 0.175              |
|                       |                      | >                    |
| Soybeans              | 14-16 %              | > 0.175              |
+-----------------------+----------------------+----------------------+

> **Reproducibility**. The results for each of the three replicates will
> be averaged for each instrument using samples over the 6 % moisture
> range and the Standard Deviation of the Differences (SDD) between
> instruments will be calculated using the following equation:
>
> $$\text{SDD} = \sqrt{\frac{\sum_{i = 1}^{n}{(d_{i} - \overline{d})^{2}}}{n - 1}}$$
>
> where,
>
> $d_{i}$ = ${\overline{P}}_{1i} - {\overline{P}}_{2i}$
>
> ${\overline{P}}_{1i}$ = average of three replicates for sample i on
> instrument 1
>
> ${\overline{P}}_{2i}$ = average of three replicates for sample i on
> instrument 2
>
> $\overline{d}$ = average of the $d_{i}$
>
> $n$ = number of samples in all three 2 % moisture ranges ($n$= 30)
>
> Tolerances for reproducibility are 0.3 x the maximum Handbook 44
> acceptance tolerance for the 6 % moisture range. Specific tolerances
> are:

  ----------------------- ----------------------- -----------------------
  Grain Type              Moisture Range          Tolerance

  Corn                    12-18 %                 0.27

  HRW wheat               10-16 %                 0.21

  Soybeans                10-16 %                 0.21
  ----------------------- ----------------------- -----------------------

> **V. Criteria for NTEP Moisture Calibration Review**
>
> The following criteria are to be applied along with criteria listed in
> Part IV above to determine \"approved\" and \"pending approval\"
> moisture ranges.
>
> **Special Cases Dealing with Inadequately Represented Moisture
> Intervals:**
>
> **VI. Standardization of Instruments**
>
> Continuing participation in the ongoing data collection and
> calibration review program (Phase II) is mandatory for all grain
> moisture meters. Annually, prior to Phase II data collection, device
> manufacturers are required to make a side-by-side comparison^1^
> between their reference standard instruments and instruments of like
> type in the NTEP Participating Laboratory. The specific details of the
> comparison tests will vary with the technology involved, but
> manufacturers will be required to provide details of their test
> procedures to the NTEP Participating Laboratory and will be required
> to show that the mean moisture difference between Manufacturer\'s
> Laboratory Standard Meters and the corresponding NTEP Laboratory
> Meters (path A in figure below) does not exceed ±0.2 x the Handbook 44
> acceptance tolerance. Manufacturers must demonstrate that their
> methods for standardizing units in production result in \"as shipped\"
> units which agree with the corresponding NTEP Laboratory units (path D
> in figure below) within ±0.3 x the Handbook 44 acceptance tolerance.
> Manufacturers must also demonstrate that once units are standardized,
> moisture results between units of like type will not exceed these
> tolerances when a grain calibration change is made.
>
> **^1^** an exchange of samples may be used in lieu of side-by-side
> testing if mutually agreeable to the NTEP Laboratory and the
> Manufacturer.

**4. Update on Field Evaluation of Proposed Test Weight per Bushel
Tolerances**

> **4.a. Review of Phase I and Phase II Data**
>
> **Background:** At the Sector\'s September 1999 meeting, maintenance
> tolerances of 0.8 pounds per bushel for corn and oats; 0.5 pounds
> per bushel for all classes of wheat; and 0.7 for soybeans, barley,
> rice, sunflower, and sorghum were proposed for further study. States
> agreeing to participate in a field evaluation of the proposed
> tolerances and test methods included:

  ----------------------- ----------------------- -----------------------
  Arkansas                Nebraska                Maryland

  Illinois                North Carolina          Missouri
  ----------------------- ----------------------- -----------------------

> The Field Evaluation of Tolerances project was conducted in two
> phases:
>
> ***Phase 1. Standardization of Quart Kettle Test Weight
> Apparatus.*** - In late September 2000, the USDA/Grain Inspection
> Packers and Stockyards Administration (GIPSA) sent one portion of a
> hard red winter wheat HRW standardizing sample to each of the
> participating State Laboratories. Participating laboratories verified
> that the quart kettle used in their standard test weight per bushel
> (TW) apparatus met the requirements spelled out in GIPSA\'s volume
> test. They also verified that the apparatus was set up according to
> GIPSA standards before testing the HRW standardizing samples.

To obtain base-line performance data on the standard quart kettle test
method for corn and soybeans, GIPSA sent corn and soybeans samples to
the participating laboratories prior to the Sector's August 2002
meeting. Tests were run on each State's standard quart kettle TW
apparatus and on any NTEP model Grain Moisture Meter with TW capability
that the State had in its laboratory.

***Phase 2. Field Tests of Test Weight per Bushel Capability. -***
Participating laboratories obtained their own samples for this test.
Each participating laboratory was to make an initial determination of
the test weight per bushel of each sample portion with the standard
quart kettle apparatus before sending it to the field. Tests were to be
run on TW capable NTEP grain moisture meters and on the kettle test
weight apparatus used at each commercial location selected for
field-testing. Kettle tests at each location were to be made by the
operator who normally made test weight per bushel determinations for
commercial transactions. No instruction was to be given to the operator
on how to perform the test. The participating laboratory was to make a
final determination of test weight per bushel when the sample was
returned to the lab. Data was to be collected on no more than twenty
instruments per grain sample.

**Discussion:** Diane Lee, OWM, reported on the current status of this
project. Phase I data for corn and soybeans had been received from all
six participating states. (Wheat samples were sent to the states in late
September 2000. With the exception of one State, the test weight
apparatuses were within GIPSA's tolerance. GIPSA has since worked with
the State to correct the test weight apparatus that was out of
tolerance.) The results for corn and soybeans are summarized below:

+----------+--------------+-------------+--------------+--------------+
| **Quart  |              |             |              |              |
| Kettle   |              |             |              |              |
| Method   |              |             |              |              |
| Test     |              |             |              |              |
| Weight   |              |             |              |              |
| per      |              |             |              |              |
| Bushel   |              |             |              |              |
| Test     |              |             |              |              |
| R        |              |             |              |              |
| esults** |              |             |              |              |
|          |              |             |              |              |
| **for**  |              |             |              |              |
|          |              |             |              |              |
| **Parti  |              |             |              |              |
| cipating |              |             |              |              |
| State    |              |             |              |              |
| Grain    |              |             |              |              |
| Moisture |              |             |              |              |
| Labs**   |              |             |              |              |
|          |              |             |              |              |
| **with** |              |             |              |              |
|          |              |             |              |              |
| **GIPSA  |              |             |              |              |
| Meas     |              |             |              |              |
| urements |              |             |              |              |
| as       |              |             |              |              |
| Ref      |              |             |              |              |
| erence** |              |             |              |              |
+----------+--------------+-------------+--------------+--------------+
|          | **Corn**     |             | **Soybeans** |              |
+----------+--------------+-------------+--------------+--------------+
|          | Bias         | Individual  | Bias         | Individual   |
|          |              | Lab         |              | Lab          |
|          | (pounds per  | Precision   | (pounds per  | Precision    |
|          | bushel)      |             | bushel)      |              |
|          |              | (pounds per |              | (pounds per  |
|          | (avg. of 3   | bushel)     | (avg. of 3   | bushel)      |
|          | replicates)  |             | replicates)  |              |
|          |              | (3          |              | (3           |
|          |              | replicates) |              | replicates)  |
+----------+--------------+-------------+--------------+--------------+
| State 1  | 0.23         | 0.06        | 0.13         | 0.06         |
+----------+--------------+-------------+--------------+--------------+
| State 2  | -0.60        | 0.00        | -0.50        | 0.00         |
+----------+--------------+-------------+--------------+--------------+
| State 3  | 0.07         | 0.06        | 0.00         | 0.00         |
+----------+--------------+-------------+--------------+--------------+
| State 4  | 0.27         | 0.06        | 0.27         | 0.06         |
+----------+--------------+-------------+--------------+--------------+
| State 5  | -0.07        | 0.06        | -0.13        | 0.06         |
+----------+--------------+-------------+--------------+--------------+
| State 6  | 0.30         | 0.00        | 0.07         | 0.06         |
+----------+--------------+-------------+--------------+--------------+
| Avg Bias | 0.03         | \-\--       | -0.03        | \-\--        |
+----------+--------------+-------------+--------------+--------------+
| Intralab | \-\--        | 0.34        | \-\--        | 0.27         |
|          |              |             |              |              |
| SDD      |              |             |              |              |
+----------+--------------+-------------+--------------+--------------+

With the exception of State 2 that reported results significantly lower
than the reference for both corn and soybeans, the results indicate that
in a laboratory setting the quart kettle method can achieve accuracies
(based on the average of 3 readings) that are approximately one-half to
one-third the proposed maintenance tolerances of 0.8 pounds per bushel
for corn and 0.7 pounds per bushel for soybeans.

In state moisture labs and in the ongoing calibration maintenance
program at GIPSA, the bias on NTEP meters using TW calibrations that had
been standardized met the proposed tolerance requirements for corn and
soybeans with one exception. The exception, with an error at least seven
times greater than meters of the same type, was judged to be an isolated
case, most likely indicating the need for service, as results for nine
other meters of like type were well within the proposed tolerance
limits. Consistent biases on the majority of meter models with TW
calibrations that had not been standardized suggest that with proper
standardization, these models would also meet the proposed tolerance
requirements. The laboratory TW results (from both NTEP and State labs)
for GMM's are summarized below.

+------+-----+-------------+-------------+--------------+-------------+
| **   |     |             |             |              |             |
| Test |     |             |             |              |             |
| We   |     |             |             |              |             |
| ight |     |             |             |              |             |
| per  |     |             |             |              |             |
| Bu   |     |             |             |              |             |
| shel |     |             |             |              |             |
| Test |     |             |             |              |             |
| R    |     |             |             |              |             |
| esul |     |             |             |              |             |
| ts** |     |             |             |              |             |
|      |     |             |             |              |             |
| **f  |     |             |             |              |             |
| or** |     |             |             |              |             |
|      |     |             |             |              |             |
| **G  |     |             |             |              |             |
| rain |     |             |             |              |             |
| Mois |     |             |             |              |             |
| ture |     |             |             |              |             |
| Me   |     |             |             |              |             |
| ters |     |             |             |              |             |
| in   |     |             |             |              |             |
| P    |     |             |             |              |             |
| arti |     |             |             |              |             |
| cipa |     |             |             |              |             |
| ting |     |             |             |              |             |
| S    |     |             |             |              |             |
| tate |     |             |             |              |             |
| G    |     |             |             |              |             |
| rain |     |             |             |              |             |
| Mois |     |             |             |              |             |
| ture |     |             |             |              |             |
| Labs |     |             |             |              |             |
| and  |     |             |             |              |             |
| at   |     |             |             |              |             |
| the  |     |             |             |              |             |
| NTEP |     |             |             |              |             |
| Labo |     |             |             |              |             |
| rato |     |             |             |              |             |
| ry** |     |             |             |              |             |
|      |     |             |             |              |             |
| **wi |     |             |             |              |             |
| th** |     |             |             |              |             |
|      |     |             |             |              |             |
| **G  |     |             |             |              |             |
| IPSA |     |             |             |              |             |
| Q    |     |             |             |              |             |
| uart |     |             |             |              |             |
| Ke   |     |             |             |              |             |
| ttle |     |             |             |              |             |
| Meas |     |             |             |              |             |
| urem |     |             |             |              |             |
| ents |     |             |             |              |             |
| as   |     |             |             |              |             |
| Ref  |     |             |             |              |             |
| eren |     |             |             |              |             |
| ce** |     |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+
| M    | num | **Corn**    |             | **Soybeans** |             |
| odel | ber |             |             |              |             |
|      | of  |             |             |              |             |
|      | met |             |             |              |             |
|      | ers |             |             |              |             |
|      |     |             |             |              |             |
|      | tes |             |             |              |             |
|      | ted |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+
|      |     | Average     | SDD         | Average Bias | SDD         |
|      |     | Bias        |             |              |             |
|      |     |             | (pounds per | (pounds per  | (pounds per |
|      |     | (pounds per | bushel)     | bushel)      | bushel)     |
|      |     | bushel)     |             |              |             |
|      |     |             | Based on 3  |              | Based on 3  |
|      |     |             | replicates  |              | replicates  |
|      |     |             | per meter   |              | per meter   |
+------+-----+-------------+-------------+--------------+-------------+
| M    | 2   | -0.35       | 0.21        | 0.08         | 0.12        |
| odel |     |             |             |              |             |
| 1    |     |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+
| M    | 9\* | -0.29       | 0.17        | -0.04        | 0.16        |
| odel |     |             |             |              |             |
| 2    |     |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+
| M    | 3   | -1.14       | 0.21        | -0.66        | 0.07        |
| odel |     |             |             |              |             |
| 3    |     |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+
| M    | 2   | -1.12       | 0.40        | -0.37        | 0.38        |
| odel |     |             |             |              |             |
| 4    |     |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+
| M    | 2   | -1.48       | 0.35        | -1.35        | 0.07        |
| odel |     |             |             |              |             |
| 5    |     |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+
| \*   |     |             |             |              |             |
| net  |     |             |             |              |             |
| of 1 |     |             |             |              |             |
| out  |     |             |             |              |             |
| lier |     |             |             |              |             |
+------+-----+-------------+-------------+--------------+-------------+

Dr. Richard Pierce, GIPSA, remarked that the repeatability of the meters
was impressive, especially in light of the fact that the SD between two
inspectors at GIPSA is typically 0.25 pounds per bushel for official
inspections. This translates to 0.5 pounds per bushel at a 95 %
confidence level.

One Sector member remarked that the samples used for Phase I tests were
fairly dry (corn: approximately 13.3 % and soybeans: approximately 10
%). The use of low moisture samples, plus the fact that the samples were
also clean and free of foreign material and broken kernels may have
contributed to the excellent results obtained in Phase I tests. Official
TW determinations by GIPSA, for most large grains, are obtained prior to
removal of dockage and foreign material.

It was also pointed out that TW measurements on high moisture samples
are not reliable. In normal years, TW will increase as a grain samples
loses moisture. The grain kernel tends to shrink somewhat as it dries.
In fact, the volume reduction is normally greater, percentage wise, than
the reduction in mass due to drying. As a result, TW (weight per unit
volume) increases. The surface condition of high moisture corn may also
contribute to additional variance in the packing density as the sample
is loaded into the test kettle or test cell of a GMM.

Phase II field data were received from Illinois, Missouri, Nebraska and
Arkansas. The results are summarized below. The Sector noted that TW
errors were essentially the same for both GMM's with TW capability and
for the various kinds of stand-alone TW apparatus currently in use in
the field. The results for corn and soybeans were especially encouraging
considering that most of the field GMM's had not been adjusted for
optimum performance on TW.

Phase II biases reported by Arkansas were significantly greater (and all
negative with respect to their reference) than those reported for wheat
and soybeans by other states on both GMM devices and on kettle test
weight apparatus. The Arkansas weights and measures representative said
that he would review the data to see if a cause for this difference
could be determined.

+------------+------------+--------------+-------------+-------------+
| **Field    |            |              |             |             |
| Evaluation |            |              |             |             |
| -- Bushel  |            |              |             |             |
| Test       |            |              |             |             |
| Weight**   |            |              |             |             |
|            |            |              |             |             |
| **Hard Red |            |              |             |             |
| Winter     |            |              |             |             |
| Wheat &    |            |              |             |             |
| Soft Red   |            |              |             |             |
| Winter     |            |              |             |             |
| Wheat**    |            |              |             |             |
|            |            |              |             |             |
| **State    |            |              |             |             |
| Quart      |            |              |             |             |
| Kettle     |            |              |             |             |
| Apparatus  |            |              |             |             |
| as         |            |              |             |             |
| R          |            |              |             |             |
| eference** |            |              |             |             |
+------------+------------+--------------+-------------+-------------+
| **State**  | **Grain    |              | **TW        |             |
|            | Moisture   |              | Apparatus** |             |
|            | Meters**   |              |             |             |
+------------+------------+--------------+-------------+-------------+
|            | SDD        | Average Bias | SDD         | Average     |
|            |            |              |             | Bias        |
|            | (pounds    | (pounds per  | (pounds per |             |
|            | per        | bushel)      | bushel)     | (pounds per |
|            | bushel)    |              |             | bushel)     |
|            |            | with respect | Based on 3  |             |
|            | Based on 3 | to reference | replicates  | with        |
|            | replicates | sample       | per device  | respect to  |
|            | per meter  |              |             | reference   |
|            |            |              |             | sample      |
+------------+------------+--------------+-------------+-------------+
| All        | 0.47       | -0.47        | 0.31        | -0.23       |
| par        |            |              |             |             |
| ticipating |            |              |             |             |
| states     |            |              |             |             |
+------------+------------+--------------+-------------+-------------+
| Illinois   | 0.43       | -0.52        | 0.50        | 0.02        |
+------------+------------+--------------+-------------+-------------+
| Missouri   | 0.26       | -0.55        | 0.32        | -0.31       |
+------------+------------+--------------+-------------+-------------+
| Nebraska   | 0.29       | -0.02        | 0.23        | -0.19       |
+------------+------------+--------------+-------------+-------------+
| Arkansas   | 0.45       | -0.92        | 0.23        | -0.36       |
|            |            |              |             |             |
| (net of 1  |            |              |             |             |
| outlier)   |            |              |             |             |
+------------+------------+--------------+-------------+-------------+

+-------------+------------+--------------+-------------+-------------+
| **Field     |            |              |             |             |
| Evaluation  |            |              |             |             |
| -- Bushel   |            |              |             |             |
| Test        |            |              |             |             |
| Weight**    |            |              |             |             |
|             |            |              |             |             |
| *           |            |              |             |             |
| *Soybeans** |            |              |             |             |
|             |            |              |             |             |
| **State     |            |              |             |             |
| Quart       |            |              |             |             |
| Kettle      |            |              |             |             |
| Apparatus   |            |              |             |             |
| as          |            |              |             |             |
| Reference** |            |              |             |             |
+-------------+------------+--------------+-------------+-------------+
| **State**   | **Grain    |              | **TW        |             |
|             | Moisture   |              | Apparatus** |             |
|             | Meters**   |              |             |             |
+-------------+------------+--------------+-------------+-------------+
|             | SDD        | Average Bias | SDD         | Average     |
|             |            |              |             | Bias        |
|             | (pounds    | (pounds per  | (pounds per |             |
|             | per        | bushel)      | bushel)     | (pounds per |
|             | bushel)    |              |             | bushel)     |
|             |            | with respect | Based on 3  |             |
|             | Based on 3 | to reference | replicates  | with        |
|             | replicates | sample       | per device  | respect to  |
|             | per meter  |              |             | reference   |
|             |            |              |             | sample      |
+-------------+------------+--------------+-------------+-------------+
| All         | 0.79       | -0.05        | 0.64        | 0.06        |
| pa          |            |              |             |             |
| rticipating |            |              |             |             |
| states      |            |              |             |             |
+-------------+------------+--------------+-------------+-------------+
| Illinois    | 0.40       | -0.09        | 0.41        | 0.25        |
+-------------+------------+--------------+-------------+-------------+
| Nebraska    | 0.32       | 0.66         | 0.20        | 0.36        |
+-------------+------------+--------------+-------------+-------------+
| Arkansas    | 0.41       | -1.10        | 0.56        | -1.04       |
|             |            |              |             |             |
| (net of 1   |            |              |             |             |
| outlier)    |            |              |             |             |
+-------------+------------+--------------+-------------+-------------+

+-------------+------------+--------------+-------------+-------------+
| **Field     |            |              |             |             |
| Evaluation  |            |              |             |             |
| -- Bushel   |            |              |             |             |
| Test        |            |              |             |             |
| Weight**    |            |              |             |             |
|             |            |              |             |             |
| **Corn**    |            |              |             |             |
|             |            |              |             |             |
| **State     |            |              |             |             |
| Quart       |            |              |             |             |
| Kettle      |            |              |             |             |
| Apparatus   |            |              |             |             |
| as          |            |              |             |             |
| Reference** |            |              |             |             |
+-------------+------------+--------------+-------------+-------------+
| **State**   | **Grain    |              | **TW        |             |
|             | Moisture   |              | Apparatus** |             |
|             | Meters**   |              |             |             |
+-------------+------------+--------------+-------------+-------------+
|             | SDD        | Average Bias | SDD         | Average     |
|             |            |              |             | Bias        |
|             | (pounds    | (pounds per  | (pounds per |             |
|             | per        | bushel)      | bushel)     | (pounds per |
|             | bushel)    |              |             | bushel)     |
|             |            | with respect | Based on 3  |             |
|             | Based on 3 | to reference | replicates  | with        |
|             | replicates | sample       | per device  | respect to  |
|             | per meter  |              |             | reference   |
|             |            |              |             | sample      |
+-------------+------------+--------------+-------------+-------------+
| All         | 0.55       | 0.05         | 0.61        | -0.27       |
| pa          |            |              |             |             |
| rticipating |            |              |             |             |
| states      |            |              |             |             |
+-------------+------------+--------------+-------------+-------------+
| Illinois    | 0.60       | 0.33         | 0.46        | 0.37        |
+-------------+------------+--------------+-------------+-------------+
| Nebraska    | 0.38       | -0.18        | 0.37        | -0.59       |
+-------------+------------+--------------+-------------+-------------+

> **4.b.** **Proposal to move the Developing Issue for Test Weight per
> Bushel forward as a Voting Item**
>
> **Discussion:** \[For additional background, see also S&T Committee
> 2002 Interim Report, Developing Issues -- Grain Moisture Meters, Item
> 1, Recognize Indications and Recorded Representations of Test Weight
> per Bushel, in NCWM Publication 16 dated April 2002.\]
>
> Knowledge of test weight per bushel (TW) is important not only in
> determining the price a producer receives for grain delivered to a
> grain elevator; it is also important to the grain elevator when grain
> stocks in storage are audited for quantity. Grain industry members
> reported that the proposed tolerances for TW are acceptable to the
> industry. Stressing that the grain industry urgently needed the
> capability to simultaneously (and easily) make TW determinations, they
> urged the Sector to recommend moving forward on this issue. Some
> members were hesitant about moving forward at this time, citing
> concern about the unresolved issue of large negative bias in the
> Arkansas Phase II data. It was pointed out that even if the Sector
> recommended moving ahead at this time, the earliest date that changes
> in the code would become effective was January 1, 2004.

The Sector considered whether the recommended changes should be
retroactive or nonretroactive. Discussion centered on the requirement
that meters measuring TW must provide some means to ensure that
measurements of TW are not allowed to be displayed or printed when
insufficient sample volume has been supplied. Although the proposed code
does not specify how this will be accomplished, it is generally assumed
that the means will include a level sensor of some sort installed in
either the sample hopper or the test cell.

Those favoring making the proposed code retroactive reminded the Sector
that although moisture measurements are not significantly affected when
samples are not of sufficient size to completely fill the measuring cell
of a GMM, the TW measurement is greatly affected when the cell is not
filled. Measurement of TW requires determination of two parameters:
volume and mass. The vast majority of GMM's with TW capability presently
in the field do not have means to assure that the measuring cell is
completely full. If the cell is not filled completely, TW indications
will be lower than they should be to the disadvantage of the producer
selling grain. Some of those favoring making the code nonretroactive
felt that GMM's with a window, through which the test cell could be
seen, provided adequate means to verify that the cell had been filled. A
grain industry member expressed the belief that compared to how test
weight measurements are being made now; the worry about a sensor was
trivial. As long as the GMM could produce an accurate TW measurement
when properly used, whether the hopper had a sensor or not was not
important. Some thought this was a facilitation of fraud issue and
favored making the sensor requirement retroactive. Others thought that
making the code retroactive would unfairly penalize users of existing
NTEP meters with TW capability.

Cassie Eigenmann of DICKEY-john, supporting making the sensor
requirement retroactive, pointed out that all existing DICKEY-john GMM's
covered by an NTEP CC were hard coded to add the words "approx" or
"approximate" to the display and print out of TW measurements. She asked
how devices displaying "approximate" TW would be regulated if the sensor
requirement was nonretroactive. Weights and measures members were at
first divided on this question. Some were of the opinion that they would
permit the continued use and display of "approximate" TW if the device
met the tolerance requirements, since "approximate" was added at the
request of jurisdictions permitting a display of TW when tolerances
didn't exist for regulation. Others were concerned about what would
happen in a court case when printed tickets presented in evidence of a
claim showed "approximate". States that presently do not permit
"approximate" TW to be displayed or recorded indicated they would not
change their policy.

On a related issue, Don Onwiler, Nebraska Dept. of Agriculture, Div. of
Weights and Measures, proposed that Sec.5.56(b) of Handbook 44 be
amended to add tolerances for grain moisture meters with test weight per
bushel capability. Because new devices with test weight per bushel
capability will be required to determine if sufficient sample volume has
been provided for an accurate measurement, and because Section 5.56(b)
applies to non-NTEP devices which are not within the purview of the
Sector, the Sector decided that it was not appropriate for the Sector to
recommend modification of Sec. 5.56(b) of the Code to add tolerances for
grain moisture meters with test weight per bushel capability. Weights
and Measures members suggested that paragraph T.3. should be revised to
clarify that it applies to separate accessory devices (such as a beam
balance test weight apparatus) used to determine test weight per bushel
of grain samples for the purpose of making density corrections in
moisture determinations. Don Onwiler offered to recommend this change to
paragraph T.3 at the September meeting of the Central Weights and
Measures Association.

> **Conclusion:** By a vote of 9 to 4, the Sector agreed that the
> addition to paragraph S.2.6. relating to a means of sensing adequate
> sample volume should be nonretroactive and recommended that the
> Specifications and Tolerances (S&T) Committee place the GMM developing
> issue relating to Indications and Recorded Representations of Test
> Weight per Bushel, on the NCWM interim agenda with the intent to make
> it a voting item at the NCWM annual meeting in July 2003. The Sector
> also agreed to modify paragraph N.1.1.(b) of the developing issue to
> remove the words "at least" and to several editorial changes. The
> change to N.1.1.(b) was made to insure that only the lowest moisture
> sample of each grain used in tests of moisture indications would be
> used in tests of test weight per bushel indications. The final
> recommendation is shown below.
>
> **Recommendation:** Modify 5.56(a) Grain Moisture Meter Code Section
> in NIST Handbook 44 to recognize indications and recorded
> representations of test weight per bushel as follows:
>
> Amend the following paragraphs:
>
> **A.1. This code applies to grain moisture meters; that is, devices
> used to indicate directly the moisture content of cereal grain and oil
> seeds. The code consists of general require­ments applicable to all
> moisture meters and specific requirements applicable only to certain
> types of moisture meters. [Requirements cited for \"test weight per
> bushel\" indications or recorded representations are applicable only
> to moisture meters incorporating an optional automatic test weight per
> bushel measuring feature.]{.underline}**
>
> **S.1.1. Digital Indications and Recording Elements.**
>
> **(c) Meters shall be equipped with a communication interface that
> permits interfacing with a recording element and transmitting the
> date, grain type, grain moisture results, [test weight per bushel
> results]{.underline} and calibration version identification.**
>
> **(d) A digital indicating element shall not display, and a recording
> element shall not record, any moisture content values [or test weight
> per bushel values]{.underline} before the end of the measurement
> cycle.**
>
> **(e) Moisture content results shall be displayed and recorded as
> percent moisture content, wet basis. [Test weight per bushel results
> shall be displayed and recorded as pounds per bushel.]{.underline}
> Subdivisions of ~~this~~ [these]{.underline} unit[s]{.underline} shall
> be in terms of decimal subdivisions (not fractions).**
>
> **(f) A meter shall not display or record any moisture content [or
> test weight per bushel]{.underline} values when the moisture content
> of the grain sample is beyond the operating range of the device,
> unless the moisture [and test weight]{.underline} representations
> include~~s~~ a clear error indication (and recorded error message with
> the recorded representation).**
>
> **S.1.3. Operating Range. - A meter shall automatically and clearly
> indicate when the operating range of the meter has been exceeded. The
> operating range shall specify the following:**
>
> **(c) Moisture Range of the Grain or Seed. The moisture range for each
> grain or seed for which the meter is to be used shall be specified.
> ~~A~~ ~~moisture~~ [Moisture and test weight per bushel]{.underline}
> values may be displayed when the moisture range is exceeded if
> accompanied by a clear indication that the moisture range has been
> exceeded.**
>
> **S.1.4. Value of Smallest Unit. - The display shall permit
> ~~constituent~~ [moisture]{.underline} value determination to both
> 0.01 % and 0.1 % resolution. The 0.1 % resolution is for commercial
> transactions; the 0.01 % resolution is for type evaluation and
> calibration purposes only, not for commercial purposes. [Test weight
> per bushel values shall be determined to the nearest 0.1 pound per
> bushel.]{.underline}**
>
> **S.2.4.1. Calibration Version. - A meter must be capable of
> displaying either calibration constants, a unique calibration name, or
> a unique calibration version number for use in verifying that the
> latest version of the calibration is being used to make moisture
> content [and test weight per bushel]{.underline} determinations.**
>
> **S.2.6. Determination of Quantity and Temperature. - The moisture
> meter system shall not require the operator to judge the precise
> volume or weight and temperature needed to make an accurate moisture
> determination. External grinding, weighing, and temperature
> measurement operations are not permitted. [In addition, if the meter
> is capable of measuring test weight per bushel, determination of
> sample volume and weight for this measurement shall be fully
> automatic*, and means shall be provided to ensure that measurements of
> test weight per bushel are not allowed to be displayed or printed when
> insufficient sample volume is available to provide an accurate
> measurement.*]{.underline}**
>
> **S.4. Operating Instructions and Use Limitations. - The manufacturer
> shall furnish operating instructions for the device and accessories
> that include complete information concerning the accuracy,
> sensitivity, and use of accessory equipment necessary in obtaining a
> moisture content. Operating instructions shall include the following
> information:**

(d) **the kind or classes of grain or seed for which the device is
    designed to measure moisture content [and test weight per
    bushel]{.underline};**

> **N.1.1. Transfer Standards.~~^1^~~ - Official grain samples shall be
> used as the official transfer standards with moisture content [and
> test weight per bushel]{.underline} values assigned by the reference
> methods.  The reference methods [for moisture]{.underline} shall be
> the oven drying methods as specified by the USDA GIPSA. [The test
> weight per bushel value assigned to a test weight transfer standard
> shall be the average of 10 test weight per bushel determinations using
> the quart kettle test weight per bushel apparatus as specified by the
> USDA GIPSA.]{.underline} Tolerances shall be applied to the average of
> at least three measure­ments on each official grain sample. Official
> grain samples shall be clean and naturally moist, but not tempered
> (i.e., water not added).**
>
> **(Amended 1992)**
>
> **N.1.2. Minimum Test. - A minimum test of a grain moisture meter
> shall consist of tests~~: (a) with~~ [using]{.underline} samples (need
> not exceed three) of each grain or seed [type]{.underline} for which
> the device is used, and [for each grain or seed type shall include the
> following:]{.underline}**
>
> **[(a)]{.underline} [tests of moisture indications]{.underline} ~~(b)
> with~~ [using samples]{.underline} having at least two different
> moisture content values within the operating range of the device, [and
> if applicable,]{.underline}**
>
> **[(b)]{.underline} [tests of test weight indications, with the lowest
> moisture samples used in (a) above. ]{.underline}**
>
> **T.3. For Test Weight Per Bushel Indications or Recorded
> Re­presenta­tions. - The maintenance and acceptance tolerances on test
> weight per bushel indications or recorded representations shall be
> ~~0.193 kg/hL or 0.15 lb/bu. The test methods used shall be those
> specified by the USDA GIPSA~~ [as shown in Table T.3. Tolerances are
> (+) positive or () negative with respect to the value assigned to the
> official grain sample. ]{.underline}**

+--------------------------------------+-------------------------------+
| > **[Table T.3. Acceptance and       |                               |
| > Maintenance                        |                               |
| > Tolerances]{.underline}**          |                               |
| >                                    |                               |
| > **[Test Weight per                 |                               |
| > Bushel]{.underline}**              |                               |
+--------------------------------------+-------------------------------+
| **[Type of Grain or                  | **[Tolerance]{.underline}**   |
| Seed]{.underline}**                  |                               |
|                                      | **[(pounds per                |
|                                      | bushel)]{.underline}**        |
+--------------------------------------+-------------------------------+
| **[Corn, oats]{.underline}**         | **[0.8]{.underline}**         |
+--------------------------------------+-------------------------------+
| **[All wheat classes]{.underline}**  | **[0.5]{.underline}**         |
+--------------------------------------+-------------------------------+
| **[Soybeans, barley, rice,           | **[0.7]{.underline}**         |
| sunflower, sorghum]{.underline}**    |                               |
+--------------------------------------+-------------------------------+

> **UR.1.1. Value of the Smallest Unit on Primary Indicating and
> Recording Elements. - The resolution of the moisture meter display
> shall be 0.1 % moisture [and 0.1 pounds per bushel test
> weight]{.underline} during commercial use.**
>
> **UR.3.4. Printed Tickets.**
>
> **(b) The customer shall be given a printed ticket showing the date,
> grain type, grain moisture results, [test weight per
> bushel,]{.underline} and calibration version identification. The
> ticket shall be generated by the grain moisture meter system.**

**5. Review Latest Draft of Evaluation Procedure Outline (EPO) and Test
Procedures for the Field Evaluation of NTEP GMM Devices (air-oven
reference method)**

**Background:** At the March 1998 GMM/NIR Sector meetings three working
groups were established to develop Examination Procedure Outlines (EPOs)
and Field Evaluation Test Procedures (Inspection Procedures) for GMM and
NIR devices to provide guidance to States on implementing NIST Handbook
44 (HB44) as it applies to these devices. The output of the working
groups was first reviewed at the Sector\'s September 1999 meeting. At
the Sector's August 2000 meeting Revised drafts of the Grain Moisture
Meter (GMM) Field Evaluation Test Procedures for the air oven reference
method and the meter-to-meter method were distributed for review.
Because of time limitations, only the meter-to-meter method was reviewed
in detail. Following that meeting, the GMM Inspection Procedure --
Air-oven Reference Method was split into two separate procedures: The
first based on HB-44, §5.56(a), applicable to all NTEP meters as well as
any meters manufactured or placed into service after January 1, 1998;
and the second based on HB-44, §5.56(b), applicable to all other meters.
A similar change was made in the corresponding EPOs. Revised drafts
(dated May 2001) were reviewed by the Sector at its August 2001 meeting.

Subsequent to the Sector's 2001 meeting, OWM discussed formatting for
EPOs considering what would be best for field inspectors. During these
discussions it was noted that EPOs should be in outline form and should
remain relatively short so that an inspector has a quick reference to
code requirements while testing is being performed. In contrast to EPOs,
field manuals should contain more detail to include pictures of the
device and more instructions for testing. Field manuals are also
intended to be used as teaching tools.

**Discussion:** In the latest round of editing, Diane Lee, NIST/OWM, has
revised the GMM Inspection Procedure to address comments and suggestions
from the Sector's August 2001 meeting. The revised Inspection Procedure
has been rearranged and incorporated into a draft Field Manual titled.
***Examination of Grain Moisture Meters***. The GMM EPO also has been
revised to address comments and suggestions from the Sector's August
2001 meeting. It has been incorporated into the Field Manual as Appendix
A. The Field Manual includes the following sections: (1) Foreword,
(2) References, (3) Definitions, (4) Testing Methods (a description of
the test method), (5) Testing Apparatus/equipment, (6) Inspection of
Commercial Devices (intended to include pictures, diagrams, or outline
drawings),  (7) Preparation and Testing of Commercial Devices, (8) Test
Report Forms, (9) Reporting a Test, and (10) Appendix A, GMM EPO.

Richard Pierce, GIPSA, noted that the EPO included several checklist
items that duplicated evaluations performed during NTEP testing. Ms. Lee
pointed out that the phrase "if conditions exist such that they can be
evaluated" precedes such checklist items. She explained that these were
included, because they represented situations that might be encountered
during routine field evaluation. For example, paragraph 6.11, relating
to the requirement that power interruption does not cause indicating or
recording of values outside of tolerance, would apply only if a power
interruption were encountered while the inspector was performing normal
accuracy tests on the device.

One attendee mentioned that a significant number of GMM rejections
during field test are caused by high moisture grain samples that are
beginning to deteriorate. There is a limit to how long high moisture
samples can be stored and still remain stable when removed from storage
and put into use. The stability problem may not be evident when the
samples leave the laboratory, but it becomes evident after the samples
have been used several times.

**Conclusion:** The Sector was in general agreement that Section 6.2
Official Samples should incorporate additional precautions relating to
the use of high moisture samples. Specific suggestions related to high
moisture samples included:

6.2.1.4. There is some evidence that moisture level of samples may begin
to change after 24 drops (18 drops for high moisture corn and soybeans),
as such samples should not be used for more than 24 drops. Samples with
moistures over 18 % for corn and over 16 % for soybeans are not
recommended for use.

Editorial revisions and suggestions relating to other issues in the main
body of the Field Examination Procedure included:

3.1. The method for testing grain moisture meters that is addressed in
this handbook is using grain samples with known moisture values. The
grain samples must be maintained when using this method to ensure that
the samples retain their original moisture values and do not deteriorate
biologically.

4.11. Certified digital heat probe thermometer, probe, and carrying case

\[**Note**: This requirement is not applicable to NTEP meters.\]

and in Appendix A,

  ----- ------ ------------------------------------------- -----------------
  4.3   T.3.   **Test Weight per Bushel Tolerance.** - The Yes No NA
               tolerance for test weight per bushel is     
               shown in Table T.3. The tolerance is        
               assigned (plus or minus) to the average of  
               three measurements.                         

  ----- ------ ------------------------------------------- -----------------

\[**Note**: The above change assumes that the NCWM will approve the
Sector's recommendations to modify the GMM Code in section 5.56(a) of
HB-44 to recognize indications and recorded representations of test
weight per bushel. See preceding agenda item 4.(b)\]

**Inspection Report** -- Will need provisions for 3 TW indications,
average TW, reference (or standard) TW, and TW error when the GMM Code
in section 5.56(a) of HB-44 is amended to recognize indications and
recorded representations of test weight per bushel.

**Inspection Report** -- Change heading of next to last column of data
field to make it clear that this is where the moisture value of the
transfer standard is to be entered:

+-----------------------------------------------------------------------+
| > -%                                                                  |
| >                                                                     |
| > moisture                                                            |
| >                                                                     |
| > (standard)                                                          |
+-----------------------------------------------------------------------+

Time constraints did not allow a complete review of the draft.
Additional comments and suggestions should be forwarded to Diane Lee at
diane.lee@nist.gov by November 15, 2002.

Manufacturers were urged to forward line drawings/diagrams of their
devices via e-mail to Diane Lee at <diane.lee@nist.gov> for inclusion in
the next draft. Especially useful would be drawings of key-pads, control
panels, and line drawings of the device identifying components likely to
be used, examined, or accessed during a field inspection.

**6. A Message from the NCWM Board of Directors**

Don Onwiler, Nebraska Department of Agriculture, Division of Weights &
Measures, representing the NCWM Board of Directors (BOD), informed the
Sector that the National Type Evaluation Program (NTEP) is working well,
largely due to the efforts of the staff of NIST's Office of Weights and
Measures and NCWM, Inc.'s NTEP Director, Steve Patoray. NTEP is solvent;
however, the BOD believes that the major work of the GMM & NIR Sectors
has been completed and it questions whether annual Sector meetings will
be required in the future. The GMM Sector contributes only \$500
annually to NTEP. The BOD figures the total staff costs associated with
the GMM/NIR Sector is about \$15,000. In a cost cutting effort for 2002,
no state members received funding for travel to attend this GMM/NIR
Sector meeting. However, the Board paid Don Onwiler's travel costs to
attend the sector meeting and to provide the sector with an explanation
of the BOD's cost cutting efforts, answer questions and address the
concerns of the sector.

**Discussion:** Sector members were disturbed about what they heard.
Several members believed that the cost of the Sector meeting was a small
portion of the \$15,000 cited as the cost of Sector support. The 2000,
2001, and 2002 meetings have all been held in Kansas City, MO at the
National Weather Service Training Center with no cost for the meeting
room or for digital projectors when needed. Sector meeting agendas and
meeting summaries are distributed by e-mail. Other than cookies, soft
drinks, and Steve Patoray's time and travel, the cost of a Sector
meeting should be very small now that funding of public member travel
had been withdrawn. One member expressed the hope that the Board would
obtain a detailed breakdown of costs directly related to the Sector's
recent meeting before making any decisions about withdrawing support for
annual meetings. There was concern that support for the GMM NTEP
certificate program would be the next thing to be withdrawn. The Sector
has always known that there would never be a large number of GMM (or
NIR) CC's, but the value of the program to regulating agencies,
producers, the grain trade, and industry is many times greater than the
annual cost of the program. Rich Pierce, GIPSA, reported that GIPSA and
OWM continue to support the program, with each providing \$18,000 per
year for the NTEP Phase II program. He said GIPSA was interested in
expanding the NTEP program to encompass additional devices. GIPSA is
making increased use of cross-utilized equipment, in which devices owned
by industry are also used by GIPSA for on-site official inspection. The
NTEP program is a critical element in that regard. Don Onwiler responded
that NCWM is committed to continuing the NTEP program for grain moisture
meters. There is no reason for the Sector to go away, but it may not
need to meet every year. Diane Lee, NIST-OWM, suggested that it might be
possible for OWM to host a technical session for NIST Handbook 44 issues
that need to be resolved or that require additional discussion if the
NCWM BOD chooses not to host a sector meeting. Dr. Charles Hurburgh,
Jr., ISU, suggested that the possibility of obtaining funding through
Federal grant programs, for some of the work done by the Sector, should
be explored. He noted that requests for funding of projects involving
joint efforts of regulators, producers, the grain trade, and industry
are usually received positively by the funding authority.

In order to promote greater uniformity in commercial grain inspection
results, Congress passed the Grain Quality Incentives Act of 1990 that
authorized the Federal Grain Inspection Service to work in conjunction
with the National Institute for Standards and Technology and the
National Conference on Weights and Measures to:

1)  identify inspection instruments requiring standardization;

2)  establish performance criteria for commercial grain inspection
    instruments;

3)  develop a national program to approve grain inspection instruments
    for commercial inspection; and

4)  develop standard reference materials or other means necessary for
    calibration or testing of approved instruments.

In 1992, partly through the efforts of Sid Colbrook, Illinois Department
of Agriculture, who was then NCWM Chairman, the GMM and NIR Sectors were
established. The Sectors became not only working groups for the
development of device standards and test/evaluation methods; they also
provided a forum for manufacturers, user groups, state regulators,
GIPSA/FGIS, and NIST-OWM to air issues of mutual concern relating to
grain inspection and measurement, including Handbook 44 issues and the
GMM ongoing calibration maintenance program. If the NCWM Board views the
current purpose of the Sectors as limited to dealing with Publication 14
issues uncovered during NTEP testing, then another forum will have to be
found for these other issues of interest (and importance) to members of
the Sector.

**7. Update on NTEP Type Evaluation and OCP (Phase II) Testing**

Rich Pierce of the Grain Inspection, Processors and Stockyards
Administration (GIPSA), the NTEP Participating Laboratory for Grain
Moisture Meters, reported that there were currently no active
applications for examination of new devices.

The number of meter types in the ongoing calibration maintenance program
remains at five, the same as last year. Phase II calibration data are
being collected for 2002 crop samples on the following meter types.

  ------------------------------------ ----------------------------------
  DICKEY-john Corporation              GAC2000NTEP, GAC2100, GAC2100A

  Foss North America, Inc.             Infratec 1227, Infratec 1229

  Foss North America, Inc.             Infratec 1241

  Motomco, Ins.                        919E, 919E-S

  The Steinlite Corporation            SL 95

  With five types in the OCP (Phase    
  II), the cost to manufacturers       
  remains at \$3,600 per type.         
  ------------------------------------ ----------------------------------

**8. A Quality Control Procedure for Grain Analysis at a Country
Elevator**

Dr. Charles Hurburgh, Jr., Agricultural & Biosystems Engineering - Iowa
State University, described a quality control system implemented by
Farmers Cooperative Elevator Company at its Odebolt, Iowa facility. The
system was developed under a grant from the Iowa Grain Quality
Initiative with the intention of learning how to develop a quality
system and then to replicate it at 32 other locations in northwest Iowa.
The initial concept was to use the quality management system for market
differentiation -- to be able to certify the identity of specialty crops
through a documented identity preservation system. During the early
stages of the project it became apparent that the quality system had
benefits as a management system and had improved operations to the
extent that the system was worth implementing even without the prospects
of market differentiation through identity preservation. In fact, Dr.
Hurburgh estimated that the system has generated two dollars for every
one dollar invested.

Four important criteria were deemed necessary for the system: 1) it must
be a certified system; 2) it must have established credibility; 3) there
must be 3^rd^ party auditing; and 4) it must have international
recognition. The system implemented is based on the American Institute
of Baking (AIB) International Gold Standard Certification Program which,
with certification and auditing through AIB's Quality System Evaluation,
includes about 80 % of the requirements of ISO-9000. Some of the key
elements of the system include: written work procedures, flowcharts for
sampling and grading processes, setting tolerances for grade factors,
using grade factor control charts and comparison charts (in-house
measurements compared to official measurements) for both inbound and
outbound grade factors. The objective being to make house grades just as
accurate as official grades, and to provide documented evidence of this
equivalence.

Quality control data was used to evaluate the accuracy of house grades.
The initial target was that no more than 5 % of the individual tests
would be out of tolerance. Operator training and incentives were based
on these data. Control charts and comparison charts made it easy to
identify trends and apply corrections before the trends became problems
-- continuous data is more useful than spot checks. Better accuracy on
inbound measurements resulted in more accurate inventory records and
assisted in merchandising. The documentation of quality control (QC)
data gave customers confidence in house grades.

The widespread implementation of quality management systems (QMS) like
the one in Odebolt, Iowa could have major implications on regulatory
programs such as those used for grain moisture meters and (soon)
near-infrared grain analyzers. If documented references are used, a
certified QMS may create more useful data than annual device
inspections. The structure of regulatory programs may change to auditing
and verification that a quality system is in place. Review of data may
replace testing of devices and reference standards may replace
monitoring.

**Discussion:**

Following Dr. Hurburgh's presentation, Don Onwiler, Nebraska Dept. of
Agriculture, Division of Weights & Measures, suggested that in the case
of prepackaging scales (automatic weighing systems) there is already
precedence for process verification rather than device inspection. In
some states such scales are not checked; instead, the packaged product
is checked for correct weight.

**9. Time and Place for Next Meeting**

The next meeting is tentatively planned for the week of August 18, 2003
in the Kansas City, MO area. Meetings will be held in one of the meeting
rooms at the National Weather Service Training Center if available. A
tentative schedule is shown below.

> Wednesday, August 20 1:00 pm - 5:00 pm GMM Sector Meeting
>
> Thursday, August 21 8:00 am - 12:00 noon GMM Sector Meeting
>
> Thursday, August 21 1:00 pm - 5:00 pm Joint Session GMM & NIR Analyzer
>
> Friday, August 22 8:00 am - 12:00 noon NIR Grain Analyzer Sector
> Meeting

# Appendix D

## National Type Evaluation Technical Committee (NTETC)

## Near Infrared (NIR) Grain Analyzer Sector

**August 22-23, 2002 - Kansas City, MO**

**Meeting Summary**

**Agenda Items**

+---+---------------------------------------------------------------------+
|   | 1.  NIST/Office of Weights and Measures Reorganization              |
+---+---------------------------------------------------------------------+
|   | 2.  Report on the 2002 NCWM Interim and Annual Meetings             |
|   |                                                                     |
|   | > a\. S&T Items 357-1A and 357-1B                                   |
|   | >                                                                   |
|   | > b\. Specialty or Proprietary Calibrations                         |
+---+---------------------------------------------------------------------+
|   | 3.  Type Evaluation Issues -- Pub 14, Table 2 - Tolerances for      |
|   |     Barley, Corn, Soybeans                                          |
+---+---------------------------------------------------------------------+
|   | 4.  Proposed Changes and Additions to Publication 14 --             |
|   |     Identification Marking Requirements                             |
+---+---------------------------------------------------------------------+
|   | 5.  Proposed Changes and Additions to Publication 14 to Add         |
|   |     Additional Grains and Criteria for Moisture Basis               |
+---+---------------------------------------------------------------------+
|   | 6.  Dual Certification -- Could a Single Certificate be Used?       |
+---+---------------------------------------------------------------------+
|   | 7.  A Message from the NCWM Board of Directors                      |
+---+---------------------------------------------------------------------+
|   | 8.  A Quality Control Procedure for Grain Analysis at a Country     |
|   |     Elevator                                                        |
+---+---------------------------------------------------------------------+
|   | 9.  Time and Place for Next Meeting                                 |
+---+---------------------------------------------------------------------+

**Note:** Because of common interest, items marked with a star () will
be considered in joint session of the NIR Grain Analyzer and the Grain
Moisture Meter Sectors

1.  **NIST/Office of Weights and Measures Reorganization**

**Discussion:** As part of a broader reorganization within NIST
Technology Services (TS), the Office of Weights and Measures (OWM) has
been raised from the program level with the Office of Measurement (now
the Measurement Services Division) to the Division level within the TS
organization structure. Henry Oppermann has been named Chief of the new
Weights and Measures Division. In addition to national weights and
measures matters, OWM will be responsible for NIST's Metric Program and
for international matters relating to legal metrology, including U.S.
participation in the OIML. This will provide a closer tie between
national and international interests in standards matters.

2.  **Report on the 2002 NCWM Interim and Annual Meetings**

> **2.a S&T Items 357-1A and 357-1B**
>
> At the NCWM Interim Meeting held January 27-30, 2002, the Committee on
> Specifications and Tolerances (S&T) considered the Sector's proposal
> to amend the scope of the Tentative Code to include a code exemption
> for specialty crops and to recommend that the amended Tentative Code
> be made permanent. During the interim meeting the original proposal,
> Agenda Item 357-1, was separated into two parts to facilitate review
> of the issues.
>
> **Agenda Item 357-1A**  - The S&T Committee recommended that the
> status of the Near Infrared Grain Analyzer Code be changed from
> tentative to permanent.  This item was given a voting (V) status for
> the 2002 NCWM Annual Meeting.
>
> **Agenda Item 357-1B** - The S&T Committee opposed the proposal to
> exempt specialty crop from the entire NIST Handbook 44 (HB-44) NIR
> Code on the basis that it has no technical merit and would set a
> precedence for anyone wanting to gain exemptions simply because they
> operate on a contractual basis. Additionally, the proposal included no
> definition for specialty crop.  To address specialty crop transactions
> where industry is concerned about the proprietary nature of
> calibration information, the Committee recommended amending NIST HB 44
> NIR Code, paragraph S.1.2 to include \"If more than one calibration is
> included for a given grain type, the calibrations must be clearly
> distinguished from one another.\"  This item was given Informational
> (I) status.
>
> For additional background refer to Committee Reports for the 87th
> Annual Meeting, NCWM Publication 16, April 2002 and to OWM Position
> Statement, "2002 S&T Interim Agenda Item 357-1 - Tentative Status of
> NIR Grain Analyzers Code."
>
> At the 87th Annual Meeting held July 14 -- 18, 2002 the Conference
> voted to accept Agenda Item 357-1A, elevating the Near Infrared Grain
> Analyzer Code to permanent status, effective January 1, 2003.
>
> **2.b. Specialty Crops and Proprietary Calibrations**
>
> **Discussion:** Sector members discussed NCWM Conference Agenda Item
> 357-1B at length. In an attempt to arrive at a definition of
> "specialty crop" it was suggested that a specialty crop might be one
> in which the constituents recognized by the CC for that crop type
> (e.g., soybeans: protein, & oil) could not be measured accurately
> using the normal calibration because the specialty crop had a spectral
> response that differed significantly from the spectral response of
> normal varieties of that crop. High oleaic soybeans (soybean varieties
> developed specifically to yield high concentrations of oleaic acid)
> were cited as a good example of a specialty crop requiring special oil
> and protein calibrations. In contrast, "high oil" corn was not
> considered a good example of a specialty crop, although seed companies
> may market it as such. It was pointed out that although "normal" corn
> typically has an oil content in the 3-4 % range, the GIPSA corn oil
> calibration contains low (3-4 %), mid-range (5-6 %), and high (\>7 %)
> oil samples from three major seed companies. Sector members were in
> general agreement that it would be misleading to imply that this, or
> similar, \"standard\" calibrations are somehow unsuitable for use with
> high-oil corn samples. There was similar agreement that, from a
> regulatory point of view, it would not be desirable to allow the use
> of multiple calibrations (on the same device) for essentially the same
> commodity.

The Sector searched for wording that would restrict the unnecessary use
of multiple calibrations for the same basic grain type but would still
permit the use of proprietary calibrations where there was a legitimate
need. The following wording was proposed as an amendment to paragraph
S.1.2 of NIST HB 44, NIR Code, \"If a non-NTEP calibration is included
for a given grain type, it must be clearly distinguished from other
calibrations. The calibration description must clearly identify the
unique end use property addressed by the calibration." Several
variations of the foregoing were also considered.

**Conclusion:** In the end, the Sector decided that it would be best to
add new text to current paragraph S.1.2. of the NIR Analyzer Code, as
shown in the recommendation below, to address specialty crop
transactions where industry is concerned about the proprietary nature of
calibration information. This is the same wording recommended by the S&T
Committee in Conference Agenda Item 357-1B.

> **Recommendation:** Amend paragraph S.1.2. as follows:
>
> ***S.1.2. Selecting Grain Class and Constituent. -- Provision shall be
> made for selecting, and recording the type or class of grain and the
> constituent(s) to be measured. The means to select the grain type or
> class and constituent(s) shall be readily visible and the type or
> class of grain and constituent(s) selected shall be clearly and
> definitely identified in letters (such as HRWW, HRSW, etc. or PROT,
> etc.). A symbol to identify the display of the type or class of grain
> and constituents(s) selected is permitted provided that it is clearly
> defined adjacent to the display. Minimum acceptable abbreviations are
> listed in Table S.1.2. Meters shall have the capability (i.e., display
> capacity) of indicating the grain type using a minimum of four
> characters in order to accommodate the abbreviations listed in Table
> S.1.2. [If more than one calibration is included for a given grain
> type, the calibrations must be clearly distinguished from one
> another.]{.underline}***

**3. Type Evaluation Issues -- Pub 14, Table 2 - Tolerances for Barley,
Corn, Soybeans**

**Background:** At its August 2001 meeting, the Sector recommended the
addition of Table 2 listing tolerances applicable to the Sample
Temperature Sensitivity test as well as tolerances for Accuracy,
Precision, and Reproducibility. Only wheat tolerance values were known
at that time. Consideration of tolerance values for barley, corn, and
soybeans was deferred pending further investigation.

**Discussion**: The Table 2 Accuracy, Precision, and Reproducibility
tolerance values for protein in all classes of wheat are based on the
following:

> Accuracy Tolerance: 1/2 the HB 44 acceptance tolerance applied to
> individual samples
>
> Repeatability Tolerance: 1/4 the HB 44 acceptance tolerance applied to
> individual samples
>
> Reproducibility Tolerance: 1/3 the HB 44 acceptance tolerance applied
> to individual samples

Dr. Richard Pierce, GIPSA, representing the NTEP Laboratory, reported
that it was reasonable to use the above multipliers for the
repeatability and reproducibility tolerances for barley, corn, and
soybeans, but due to uncertainties with the standard reference methods
for the larger grains and oil seeds, accuracy tolerances would have to
be increased for corn and soybeans beyond the values obtained using the
above multipliers.

The tolerance value of ± 0.35 for the Sample Temperature Sensitivity
Test for all classes of wheat was not originally expressed as a fraction
of the HB 44 acceptance tolerance applied to individual samples, but Dr.
Pierce indicated that an appropriate tolerance for this test would be ±
0.45 for all the constituents of the added grain types.

Accordingly, the repeatability and reproducibility tolerances proposed
for barley, corn, and soybeans, were derived using the multipliers
mentioned above and rounding the results to the next highest 0.05.
Accuracy tolerances proposed for barley were also derived using the
multipliers mentioned above and rounding the results to the next highest
0.05. Accuracy tolerances proposed for corn and soybeans were derived by
first using the multipliers mentioned above, rounding the results to the
next highest 0.05, and then adding an additional allowance to account
for uncertainties in the standard reference methods. The calculation of
the overall accuracy tolerance for Corn and Soybeans is shown below:

+--------------+--------+------------------------+-----------+--------+
| Grain Type   | Const  | 1/2 the acceptance     | A         | O      |
|              | ituent | tolerance applied to   | dditional | verall |
|              |        | individual samples     | allowance | ac     |
|              |        |                        |           | curacy |
|              |        | (rounded up to the     |           | tol    |
|              |        | next highest 0.05)     |           | erance |
+--------------+--------+------------------------+-----------+--------+
| Corn         | P      | 0.45                   | 0.05      | 0.50   |
|              | rotein |                        |           |        |
+--------------+--------+------------------------+-----------+--------+
|              | Oil    | 0.40                   | 0.10      | 0.50   |
+--------------+--------+------------------------+-----------+--------+
|              | Starch | 0.55                   | 0.45      | 1.00   |
+--------------+--------+------------------------+-----------+--------+
| Soybeans     | P      | 0.45                   | 0.10      | 0.55   |
|              | rotein |                        |           |        |
+--------------+--------+------------------------+-----------+--------+
|              | Oil    | 0.40                   | 0.05      | 0.45   |
+--------------+--------+------------------------+-----------+--------+

**Recommendation:** Add tolerance values for barley, corn, and soybeans
to Table 2 as shown.

+-------------------+-------+------------+-------+--------+----------+
| **Table 2.        |       |            |       |        |          |
| Tolerances**      |       |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Grain Type        | C     | Sample     | Acc   | R      | Reprodu  |
|                   | onsti | T          | uracy | epeata | cibility |
|                   | tuent | emperature |       | bility |          |
|                   |       | S          | Tole  |        | T        |
|                   |       | ensitivity | rance | Tol    | olerance |
|                   |       | Test       |       | erance |          |
|                   |       |            |       |        |          |
|                   |       | Tolerance  |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Durum Wheat       | Pr    | ± 0.35     | 0.30  | 0.15   | 0.20     |
|                   | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Hard Red Spring   | Pr    |            |       |        |          |
| Wheat             | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Hard Red Winter   | Pr    |            |       |        |          |
| Wheat             | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Hard White Wheat  | Pr    |            |       |        |          |
|                   | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Soft Red Winter   | Pr    |            |       |        |          |
| Wheat             | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Soft White Wheat  | Pr    |            |       |        |          |
|                   | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| "All-Class" Wheat | Pr    |            |       |        |          |
| Calibration       | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Two-rowed Barley  | Pr    | ± 0.45     | 0.40  | 0.20   | 0.25     |
|                   | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Six-rowed Barley  | Pr    |            |       |        |          |
|                   | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| "All-Class"       | Pr    |            |       |        |          |
| Barley            | otein |            |       |        |          |
| Calibration       |       |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Corn              | Pr    | ± 0.45     | 0.50  | 0.25   | 0.30     |
|                   | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
|                   | Oil   | ± 0.45     | 0.50  | 0.20   | 0.25     |
+-------------------+-------+------------+-------+--------+----------+
|                   | S     | ± 0.45     | 1.0   | 0.30   | 0.35     |
|                   | tarch |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
| Soybeans          | Pr    | ± 0.45     | 0.55  | 0.25   | 0.30     |
|                   | otein |            |       |        |          |
+-------------------+-------+------------+-------+--------+----------+
|                   | Oil   | ± 0.45     | 0.45  | 0.20   | 0.25     |
+-------------------+-------+------------+-------+--------+----------+

**4. Proposed Changes and Additions to Publication 14**

> **4.a. Identification Marking Requirements**

**Background:** The 86^th^ National Conference on Weights and Measures
(NCWM) in 2001 adopted changes to the General Code section of Handbook
44 that require corresponding changes to the Grain Moisture Meter Check
List in Publication 14. The changes include:

-   a specification of acceptable abbreviations for the word "Model"

-   a requirement that devices be permanently marked with the applicable
    Certificate of Conformance (CC) number or a corresponding CC
    addendum number.

> \[For a detailed discussion of the above changes see the report 86^th^
> NCWM. NIST *Special Publication 976*.\]

**Conclusion and Recommendation:** The Sector agreed to recommend
amending and modifying Publication 14, NIR Checklist, Section
1.  General**,** to combine related marking requirements and to address
the above issues. In addition, the Sector recommended moving the
paragraph related to Code Reference G‑S.1.1. to a more appropriate
location following the list of marking requirements. Recommended changes
are shown below.

**1. General**

**Code Reference: G-S.1. Identification**

Virtually all measuring equipment (except separate parts necessary to
the measurement process but not having any metrological effect) must be
clearly and permanently marked with the manufacturer\'s name or
trademark, model designation, and serial number. Additionally, devices
that have (or will have) an NTEP Certificate of Conformance (CC) Number,
must be marked with the CC number or a corresponding CC addendum number.
\"Permanent\" markings addresses two aspects: (1) the printed
information will withstand wear and cleaning, and (2) if the markings
are on a plate or badge, then the marking badge must be \"permanently\"
attached to the device. Permanently attached means that the
identification information required by G‑S.1. is not easily removed from
the badge. If it is removed, then it must be obvious that the badge or
plate containing this information has been removed. All markings must be
clear and easily readable. The following test procedure shall be used to
determine the permanence of the identification markings.

**Permanence of Lettering**: The lettering for the markings are
subjected to the following tests to simulate accelerated wear. The
markings are then compared with a typical set of labels exhibiting
various degrees of wear, graded from minimal effect (1) to excessive
unacceptable wear (7).

> Attempts are made to remove the marked information, whether on a badge
> (plate) or on the device itself, using the following means:

1\. Rub over one letter of the marking at least 20 times using an ink
eraser in the same manner and force as one would normally exert while
erasing an inscription written with a ballpoint pen.

2\. Clean the marking or badge with the following cleaners presumed to
be \"readily available.\"

> a\. Disinfecting cleaning liquid and a damp cloth.
>
> b\. \"Soft\" household cleaning powder and a damp cloth.
>
> c\. Window cleaning fluids and a damp cloth.
>
> **Permanence of Attachment of Badge**: Attempt to remove the badge by
> pulling it off or prying off a metal badge that is attached using only
> adhesive; removal must be \"difficult\" at all temperatures. If the
> badge can be removed, it must show obvious evidence that the badge was
> removed. Acceptable indications are destruction of the badge by
> tearing, permanent and extensive wrinkling, or repeated exposure of
> the word \"VOID\" upon removal of the badge.
>
> As a practical matter, remote constituent displays are not required to
> have serial numbers because they typically only repeat the moisture
> information received from the measuring element. Similarly, external
> printers are not required to have serial numbers because they do not
> alter the information received from the measuring element.
>
> If the required information is located on the back of a device, the
> same information must also appear on the side, front, or top. The
> bottom of a device is not an acceptable surface. The identification
> marking must be permanent and attached with pop rivets, adhesive, or
> other permanent means. Removable bolts or screws are not permitted. A
> foil badge may be used provided that it is durable, difficult to
> remove, and exhibits obvious evidence of an attempt to remove the
> marking or badge.

The system must be clearly and permanently marked with the following
information on an exterior surface that is visible after installation,
with the following information:

+----+------------------------------------------------+----------------+
| >  | The name, initials or trademark of the         | Yes No NA      |
|  1 | manufacturer. A remote display is required to  |                |
| .1 | have the manufacturer\'s name or trademark and |                |
|    | model designation. (Code Reference GS.1.(a))   |                |
+----+------------------------------------------------+----------------+
| >  | A model designation that positively identifies | Yes No NA      |
|  1 | the pattern or design of the device. The Model |                |
| .2 | designation shall be prefaced by the word      |                |
|    | "Model", "Type", or "Pattern." These terms may |                |
|    | be followed by the term "Number" or an         |                |
|    | abbreviation of that word. The abbreviation    |                |
|    | for the word "Number" shall, as a minimum,     |                |
|    | begin with the letter "N" (e.g., No or No.).   |                |
|    | The abbreviation for the word "Model" shall be |                |
|    | "Mod" or "Mod."                                |                |
|    |                                                |                |
|    | (Effective January 1, 2003). (Code Reference   |                |
|    | G‑S.1.(b)&(c))                                 |                |
+----+------------------------------------------------+----------------+
| >  | A nonrepetitive serial number prefaced by      | Yes No NA      |
|  1 | words "Serial Number" or an abbreviation of    |                |
| .3 | that term. Abbreviations for the word "Serial" |                |
|    | shall, as a minimum, begin with the letter     |                |
|    | "S," and abbreviations for the word "Number"   |                |
|    | shall, as a minimum, begin with the letter "N" |                |
|    | (e.g., S/N, SN, Ser.No, and S No.). (Code      |                |
|    | Reference G‑S.1.(d),(e), & (f)).               |                |
+----+------------------------------------------------+----------------+
| >  | The NTEP Certificate of Conformance (CC)       | Yes No NA      |
|  1 | Number or a corresponding CC addendum number   |                |
| .4 | for devices that have (or will have) a CC. The |                |
|    | number shall be prefaced by the terms "NTEP    |                |
|    | CC," "CC," or "Approval." These terms may be   |                |
|    | followed by the term "Number" or an            |                |
|    | abbreviation of the word "Number". The         |                |
|    | abbreviation shall, as a minimum, begin with   |                |
|    | the letter "N" (e.g., No or No.). (Code        |                |
|    | Reference G‑S.1.(g). Effective January 1,      |                |
|    | 2003).                                         |                |
|    |                                                |                |
|    | The device must have an area, either on the    |                |
|    | identification plate or on the device itself,  |                |
|    | suitable for the application of the CC number. |                |
|    | If the area for the CC number is not part of   |                |
|    | an identification plate, note its intended     |                |
|    | location and how it will be applied.           |                |
|    |                                                |                |
|    | Location of CC Number if not located with the  |                |
|    | identification information:                    |                |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_       |                |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ |                |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ |                |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ |                |
|    | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ |                |
+----+------------------------------------------------+----------------+
| >  | > If the information required by G-S.1. is     | Yes No NA      |
|  1 | > placed on a badge or plate, the badge or     |                |
| .5 | > plate must be permanently attached to the    |                |
|    | > device. (See criteria below for Permanence   |                |
|    | > of Attachment of Badge.)                     |                |
|    | >                                              |                |
|    | > (Code Reference G-S-1.)                      |                |
+----+------------------------------------------------+----------------+
| >  | > Identifying information shall be so located  | Yes No NA      |
|  1 | > that it is readily observable without the    |                |
| .6 | > necessity of the disassembly of a part       |                |
|    | > requiring the use of any means separate from |                |
|    | > the device.                                  |                |
+----+------------------------------------------------+----------------+
| >  | > All markings must be clear and easily        | Yes No NA      |
|  1 | > readable.                                    |                |
| .7 |                                                |                |
+----+------------------------------------------------+----------------+
| >  | > The lettering for all markings must be       | Yes No NA      |
|  1 | > permanent. Record the grade for the          |                |
| .8 | > permanence of markings.                      |                |
|    | > \_\_\_\_\                                    |                |
|    | _\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_. |                |
+----+------------------------------------------------+----------------+
| >  | > If the markings for other than device        | Yes No NA      |
|  1 | > identification required by G-S.1. are placed |                |
| .9 | > on a badge or decal, then the badge or decal |                |
|    | > must be durable (difficult to remove at all  |                |
|    | > temperatures).                               |                |
+----+------------------------------------------------+----------------+

> Code Reference: G-S.1.1. Remanufactured Devices and Remanufactured
> Main Elements
>
> Refer to the Section Policy on Remanufactured and Repaired Devices in
> the NCWM Publication 14 Administrative Policy.
>
> **4.b. Miscellaneous Editorial Changes**
>
> **Discussion:** The Sector reviewed the original draft of the 2002
> issue of the Near Infrared (NIR) checklist in Publication 14. Several
> typographical errors were noted.
>
> **Conclusion and Recommendation:** The Sector recommended changes to
> correct typographical errors and to remove text referring to sample
> temperature sensitivity from the first paragraph of part I. Basic
> Instrument Tests. This change was overlooked when sample temperature
> sensitivity was moved to part II in an earlier change. The Sector also
> recommended:

-   Adding text defining "room temperature" to part II. Sample
    Temperature Sensitivity;

-   Changing equations and variable definitions to use a "bar" over
    variables that are intended to indicate an "average" or "mean", and
    add missing definition of variables for SEP equation.

-   Deleting part IV. Tolerances for Calibration Performance in its
    entirety. This change was recommended at the Sector's 2001 meeting
    but had not been made in the 2002 review copy provided to the
    Sector.

Recommended changes follow:

> **Type Evaluation Test Procedures and Tolerances**
>
> **I. Basic Instrument Tests**

Basic instrument tests will be conducted using a stable moisture,
mid-range protein HRW wheat sample to check the effect of power supply
fluctuations, storage temperature, leveling, warm-up time, humidity,
instrument stability, and instrument temperature sensitivity. All
instrument tests will be conducted on each of the two instruments
submitted by a manufacturer. For purposes of these tests, room
temperature will be defined as 22 ºC ± 2 ºC.

> **II. Sample Temperature Sensitivity.**

Testing is required to verify that accurate results are provided when
the sample and instrument are at different temperatures. This will be
referred to as the sample temperature sensitivity test. Tests will be
conducted with the instrument at room temperature and the sample
temperature varying from room temperature + ∆T~H~ to room temperature
∆T~C~, where ∆T~H~ is the manufacturer-specified difference for grain
above room temperature, and ∆T~C~ is the manufacturer‑specified
difference for grain below room temperature. In no case will room
temperature + ∆T~H~ be allowed to exceed 45 C, but ∆T~H~ need not equal
∆T~C~. For purposes of these tests, room temperature will be defined as
22 ºC ± 2 ºC.

**Accuracy.** The first replicate for each sample will be used to
calculate the Standard Error of Performance (SEP) for each instrument
with respect to the reference method. Each instrument will be tested
individually.

$\text{SEP} = \sqrt{\frac{\sum_{i = 1}^{n}{(y_{i} - \overline{y})^{2}}}{n - 1}}$

where,

> ${\overline{x}}_{i}$ = average predicted constituent concentration for
> sample $i$ (3 replicates)
>
> $r_{i}$ = reference constituent concentration for sample $i$
>
> $y_{i}$ = ${\overline{x}}_{i} - r_{i}$
>
> $\overline{y}$ = average of $y_{i}$
>
> $n$ = number of samples in the test set for the constituent
> calibration being evaluated ($n$= 50, see Note 1 below regarding "all
> class" calibrations.)

**Repeatability.** The Standard Deviation (SD) of the three replicates
will be calculated and pooled across samples for each class. Each
instrument will be tested individually. The equation used to calculate
SD is:

$$\text{SD} = \sqrt{\frac{\sum_{i = 1}^{n}{\sum_{j = 1}^{3}{(P_{\text{ij}} - {\overline{P}}_{i})^{2}}}}{2n}}$$

where,

> $P_{\text{ij}}$ = predicted constituent concentration for sample i and
> replicate j
>
> ${\overline{P}}_{i}$ = average of the three predicted constituent
> concentration values for sample i
>
> $n$ = number of samples in the test set for constituent calibration
> being evaluated ($n$= 50, see Note below regarding "all class"
> calibrations.)

**.**

$\text{SDD} = \sqrt{\frac{\sum_{i = 1}^{n}\left( d_{i} - \overline{d} \right)^{2}}{n - 1}}$**Reproducibility.**
The results for each of the three replicates obtained for samples in the
test set will be averaged for each instrument and the Standard Deviation
of the Differences (SDD) between instruments will be calculated using
the following equation:

where,

> $d_{i}$ = ${\overline{P}}_{1i} - {\overline{P}}_{2i}$
>
> ${\overline{P}}_{1i}$ = average of three replicates for sample i on
> instrument 1
>
> ${\overline{P}}_{2i}$ = average of three replicates for sample i on
> instrument 2
>
> $\overline{d}$ = average of the di
>
> $n$ = number of samples in the test set for constituent calibration
> being evaluated ($n$= 50, see Note below regarding "all class"
> calibrations.)

and delete all of part IV. Tolerances for Calibration Performance.

**5. Proposed Changes and Additions to Publication 14 to Add Additional
Grains and Criteria for Moisture Basis**

**Background:** The 86^th^ National Conference on Weights and Measures
in 2001 adopted changes to the Handbook 44 tentative code for Near
Infrared Grain Analyzers that require corresponding changes to
Publication 14, Near Infrared Grain Analyzer Checklist**, §2. Indicating
Elements, Recording Elements, and Recorded Representations** and **§3.
Design of NIR Analyzers.** The changes include:

-   adding requirements for corn protein, oil, and starch; barley
    protein; and soybeans protein and oil

-   adding criteria for moisture basis

> \[For a detailed discussion of these changes see NIST Special
> Publication 976, *Report of the 86^th^ National Conference on Weights
> and Measures Annual Meeting.*\]

**Discussion:** The draft copy of the proposed changes to the NIR Grain
Analyzer Checklist included two paragraphs relating to Code Reference:
UR.2.3. Printed Tickets:

  ------------ ----------------------------------------------------------------
  **Code       
  Reference:   
  UR.2.3.      
  Printed      
  Tickets**    

  2.17         If the analyzer converts constituent results to a manually
               entered moisture basis, the \"native\" concentration and the
               \"native\" moisture basis must appear on the printed ticket in
               addition to the converted results and the manually entered
               moisture basis.

  2.18         The information presented on the ticket is arranged in a
               consistent and unambiguous manner.
  ------------ ----------------------------------------------------------------

Steve Patoray, NTEP Director, reminded the Sector that NTEP does not
evaluate User Requirements. A review of the NIR code in Handbook 44
(HB-44) revealed that, under the circumstances described in UR.2.3,
there was nothing in the specifications that required the device to be
capable of transmitting the "native" moisture basis and constituent
concentration (at that basis) or that information on the ticket be
arranged in a consistent and unambiguous manner when the device either
contains a built-in printer or when a printer is offered by the
manufacturer as an optional accessory.

Consideration of the requirements of UR.2.3. led to a discussion of why
a user might want to manually enter a moisture basis and whether a
manually entered moisture basis should be "flagged" on the ticket.

It was explained that NIR calibrations can be derived using constituent
concentration data expressed on any one of a variety of moisture bases.
As an example, in the U.S., wheat protein is commonly traded on a 12 %
moisture basis. Partly for this reason, some manufacturers have chosen
to develop their wheat protein calibrations on a 12 % moisture basis.
Russian contracts, however, frequently specify protein values on a dry
basis (0 % moisture basis). Other contracts may specify protein on an
"as-is" basis. By entering the desired moisture basis using the
instrument keyboard, the instrument can produce indications (and
recorded representations) not only of the wheat protein value at its
"native" moisture basis (in this example, 12 %) but also at the keyboard
entered moisture basis, whether the basis is 0 % or any other value. The
conversion from "native" moisture basis to any other moisture basis
(whether entered via the keyboard or selected for a particular grain at
time of set-up) is a straightforward mathematical conversion. It could
also be accomplished using a pocket calculator with knowledge of: 1) the
moisture basis of the NIR instrument's protein result and 2) the desired
moisture basis.

Of greater concern than a keyboard entered moisture basis, which will
result in calculation of the correct protein value for the indicated
moisture basis (even if the indicated moisture basis is an erroneously
entered value), is the fact that some instruments offer several options
for processing the measured value produced by the calibration selected
for use. Typically, the options include:

1\. **No transformation.** - Results are displayed without modification.

2\. **Transformation to a "fixed" moisture basis.** - In some
instruments, the installer, when setting up this mode, selects one
moisture basis from a list of "standard" moisture bases. In other
instruments, choosing this mode prompts the installer to enter, via the
keyboard, the fixed moisture basis that will be used. In either
instance, once this mode has been set up for use with a given
calibration, the same specified moisture basis is used to transform all
measurements made using that calibration. There are 2 subcategories to
this option. The selection of the correct subcategory depends on whether
or not the native calibration had been derived on a fixed moisture
basis.

a\. Constituent measurement at a fixed native moisture basis (other than
"as is") is transformed to a different "fixed" moisture basis for
display on the instrument. The installer must specify the native
moisture basis for the calibration at time of installation. The
instrument does not have to measure moisture in this case.

b\. "As is" constituent measurement at an internally measured "as is"
moisture value is transformed to a different "fixed" moisture basis for
display on the instrument. This subcategory requires that the instrument
measure moisture.

3\. **Transformation to a "variable" moisture basis.** - Same as 2a and
2b above except that the target moisture basis is not stored in device
memory for use in transforming the measured value produced by the
calibration to its value at the target moisture basis. Instead, the user
enters the target moisture basis via the keyboard for each sample
measured by the device. The result of a measurement will not be
displayed until the user has entered the moisture basis desired for that
sample.

To obtain correct results, instrument option settings must be
appropriate for the calibration used. Selection of the wrong option for
a given calibration will result in incorrect constituent values for that
calibration. Paragraph S.2.5.2 of the NIR Code requires that CC's (and
user instructions) indicate the instrument settings that are appropriate
for use with each calibration. These settings are considered
\"metrologically significant\" and are to be sealable \[S.2.5.2\]. Some
members questioned if the option setting should also appear on the
printed ticket so that, in the event of challenges or complaints, the
ticket would contain sufficient information to resolve the issue. Others
were of the opinion that errors due to improper set up would be
discovered during field inspection.

Rich Pierce, GIPSA, speaking for the NTEP Laboratory, stated that for
practical reasons, instruments submitted for NTEP evaluation must be
capable of being set up to transmit results at the standard moisture
bases listed in Table N.1.1. of the NIR code. Once set up, instruments
must not require manual entry of either a moisture measurement or a
target moisture basis.

In reviewing the checklist, several members suggested that the words,
"at the specified moisture basis" be inserted at the end of the first
sentence of item 2.5 for correctness, and to emphasize that the total
mass depends not only on the constituent mass but also upon the mass of
moisture at the specified moisture basis. Thus, the percent of total
mass represented by the constituent will also depend on the specified
moisture basis.

**Conclusion:** The Sector agreed that references to user requirements
should not appear in the checklist. They also agreed that HB 44 should
be amended to add specifications requiring the device to be capable of
transmitting the "native" moisture basis and constituent value in
addition to the constituent value and keyed-in moisture basis as
described in UR2.3.(b). The Sector did not decide on the exact text for
that code change. No final decision was made on the suggestion to flag
manually entered moisture bases or the suggestion to include option
settings on the printed ticket. These will be considered at a future
meeting. The Sector agreed that the NIR Grain Analyzer Checklist of 2002
should be amended and modified as shown below, including the suggested
addition to item 2.5.

**Recommendation:** Amend and modify Publication 14, NIR Grain Analyzer
Checklist, §2. Indicating Elements, Recording Elements, and Recorded
Representations and §3. Design of NIR Analyzers as shown below.

**2. Indicating Elements, Recording Elements, and Recorded
Representations**

+---+----+-------------------------------------------+----------------+
| * |    |                                           |                |
| * |    |                                           |                |
| C |    |                                           |                |
| o |    |                                           |                |
| d |    |                                           |                |
| e |    |                                           |                |
| R |    |                                           |                |
| e |    |                                           |                |
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| n |    |                                           |                |
| c |    |                                           |                |
| e |    |                                           |                |
| : |    |                                           |                |
| S |    |                                           |                |
| . |    |                                           |                |
| 1 |    |                                           |                |
| . |    |                                           |                |
| 1 |    |                                           |                |
| . |    |                                           |                |
| D |    |                                           |                |
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| g |    |                                           |                |
| i |    |                                           |                |
| t |    |                                           |                |
| a |    |                                           |                |
| l |    |                                           |                |
| I |    |                                           |                |
| n |    |                                           |                |
| d |    |                                           |                |
| i |    |                                           |                |
| c |    |                                           |                |
| a |    |                                           |                |
| t |    |                                           |                |
| i |    |                                           |                |
| o |    |                                           |                |
| n |    |                                           |                |
| s |    |                                           |                |
| a |    |                                           |                |
| n |    |                                           |                |
| d |    |                                           |                |
| R |    |                                           |                |
| e |    |                                           |                |
| c |    |                                           |                |
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| d |    |                                           |                |
| i |    |                                           |                |
| n |    |                                           |                |
| g |    |                                           |                |
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| s |    |                                           |                |
| * |    |                                           |                |
| * |    |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | T  |                                           | Yes No NA      |
| . | he |                                           |                |
| 1 | an |                                           |                |
|   | al |                                           |                |
|   | yz |                                           |                |
|   | er |                                           |                |
|   | s  |                                           |                |
|   | ha |                                           |                |
|   | ll |                                           |                |
|   | be |                                           |                |
|   | eq |                                           |                |
|   | ui |                                           |                |
|   | pp |                                           |                |
|   | ed |                                           |                |
|   | wi |                                           |                |
|   | th |                                           |                |
|   | a  |                                           |                |
|   | d  |                                           |                |
|   | ig |                                           |                |
|   | it |                                           |                |
|   | al |                                           |                |
|   | in |                                           |                |
|   | di |                                           |                |
|   | ca |                                           |                |
|   | ti |                                           |                |
|   | ng |                                           |                |
|   | el |                                           |                |
|   | em |                                           |                |
|   | en |                                           |                |
|   | t. |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | T  |                                           | Yes No NA      |
| . | he |                                           |                |
| 2 | m  |                                           |                |
|   | in |                                           |                |
|   | im |                                           |                |
|   | um |                                           |                |
|   | he |                                           |                |
|   | ig |                                           |                |
|   | ht |                                           |                |
|   | f  |                                           |                |
|   | or |                                           |                |
|   | di |                                           |                |
|   | gi |                                           |                |
|   | ts |                                           |                |
|   | us |                                           |                |
|   | ed |                                           |                |
|   | to |                                           |                |
|   | d  |                                           |                |
|   | is |                                           |                |
|   | pl |                                           |                |
|   | ay |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | va |                                           |                |
|   | lu |                                           |                |
|   | es |                                           |                |
|   | is |                                           |                |
|   | 10 |                                           |                |
|   | m  |                                           |                |
|   | m. |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | T  |                                           | Yes No NA      |
| . | he |                                           |                |
| 3 | an |                                           |                |
|   | al |                                           |                |
|   | yz |                                           |                |
|   | er |                                           |                |
|   | is |                                           |                |
|   | eq |                                           |                |
|   | ui |                                           |                |
|   | pp |                                           |                |
|   | ed |                                           |                |
|   | wi |                                           |                |
|   | th |                                           |                |
|   | a  |                                           |                |
|   | c  |                                           |                |
|   | om |                                           |                |
|   | mu |                                           |                |
|   | ni |                                           |                |
|   | ca |                                           |                |
|   | ti |                                           |                |
|   | on |                                           |                |
|   | i  |                                           |                |
|   | nt |                                           |                |
|   | er |                                           |                |
|   | fa |                                           |                |
|   | ce |                                           |                |
|   | th |                                           |                |
|   | at |                                           |                |
|   | p  |                                           |                |
|   | er |                                           |                |
|   | mi |                                           |                |
|   | ts |                                           |                |
|   | i  |                                           |                |
|   | nt |                                           |                |
|   | er |                                           |                |
|   | fa |                                           |                |
|   | ci |                                           |                |
|   | ng |                                           |                |
|   | wi |                                           |                |
|   | th |                                           |                |
|   | a  |                                           |                |
|   | r  |                                           |                |
|   | ec |                                           |                |
|   | or |                                           |                |
|   | di |                                           |                |
|   | ng |                                           |                |
|   | e  |                                           |                |
|   | le |                                           |                |
|   | me |                                           |                |
|   | nt |                                           |                |
|   | a  |                                           |                |
|   | nd |                                           |                |
|   | c  |                                           |                |
|   | an |                                           |                |
|   | tr |                                           |                |
|   | an |                                           |                |
|   | sm |                                           |                |
|   | it |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | d  |                                           |                |
|   | at |                                           |                |
|   | e, |                                           |                |
|   | g  |                                           |                |
|   | ra |                                           |                |
|   | in |                                           |                |
|   | ty |                                           |                |
|   | pe |                                           |                |
|   | or |                                           |                |
|   | cl |                                           |                |
|   | as |                                           |                |
|   | s, |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | v  |                                           |                |
|   | al |                                           |                |
|   | ue |                                           |                |
|   | s, |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | b  |                                           |                |
|   | as |                                           |                |
|   | is |                                           |                |
|   | f  |                                           |                |
|   | or |                                           |                |
|   | ea |                                           |                |
|   | ch |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | v  |                                           |                |
|   | al |                                           |                |
|   | ue |                                           |                |
|   | (  |                                           |                |
|   | ex |                                           |                |
|   | ce |                                           |                |
|   | pt |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | ), |                                           |                |
|   | a  |                                           |                |
|   | nd |                                           |                |
|   | c  |                                           |                |
|   | al |                                           |                |
|   | ib |                                           |                |
|   | ra |                                           |                |
|   | ti |                                           |                |
|   | on |                                           |                |
|   | v  |                                           |                |
|   | er |                                           |                |
|   | si |                                           |                |
|   | on |                                           |                |
|   | i  |                                           |                |
|   | de |                                           |                |
|   | nt |                                           |                |
|   | if |                                           |                |
|   | ic |                                           |                |
|   | at |                                           |                |
|   | io |                                           |                |
|   | n. |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | A  |                                           | Yes No NA      |
| . | d  |                                           |                |
| 4 | ig |                                           |                |
|   | it |                                           |                |
|   | al |                                           |                |
|   | in |                                           |                |
|   | di |                                           |                |
|   | ca |                                           |                |
|   | ti |                                           |                |
|   | ng |                                           |                |
|   | e  |                                           |                |
|   | le |                                           |                |
|   | me |                                           |                |
|   | nt |                                           |                |
|   | s  |                                           |                |
|   | ha |                                           |                |
|   | ll |                                           |                |
|   | n  |                                           |                |
|   | ot |                                           |                |
|   | di |                                           |                |
|   | sp |                                           |                |
|   | la |                                           |                |
|   | y, |                                           |                |
|   | a  |                                           |                |
|   | nd |                                           |                |
|   | r  |                                           |                |
|   | ec |                                           |                |
|   | or |                                           |                |
|   | di |                                           |                |
|   | ng |                                           |                |
|   | e  |                                           |                |
|   | le |                                           |                |
|   | me |                                           |                |
|   | nt |                                           |                |
|   | s  |                                           |                |
|   | ha |                                           |                |
|   | ll |                                           |                |
|   | n  |                                           |                |
|   | ot |                                           |                |
|   | r  |                                           |                |
|   | ec |                                           |                |
|   | or |                                           |                |
|   | d, |                                           |                |
|   | a  |                                           |                |
|   | ny |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | v  |                                           |                |
|   | al |                                           |                |
|   | ue |                                           |                |
|   | be |                                           |                |
|   | fo |                                           |                |
|   | re |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | e  |                                           |                |
|   | nd |                                           |                |
|   | of |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | m  |                                           |                |
|   | ea |                                           |                |
|   | su |                                           |                |
|   | re |                                           |                |
|   | me |                                           |                |
|   | nt |                                           |                |
|   | cy |                                           |                |
|   | cl |                                           |                |
|   | e. |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | C  |                                           | Yes No NA      |
| . | on |                                           |                |
| 5 | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | te |                                           |                |
|   | nt |                                           |                |
|   | is |                                           |                |
|   | re |                                           |                |
|   | co |                                           |                |
|   | rd |                                           |                |
|   | ed |                                           |                |
|   | a  |                                           |                |
|   | nd |                                           |                |
|   | d  |                                           |                |
|   | is |                                           |                |
|   | pl |                                           |                |
|   | ay |                                           |                |
|   | ed |                                           |                |
|   | as |                                           |                |
|   | a  |                                           |                |
|   | p  |                                           |                |
|   | er |                                           |                |
|   | ce |                                           |                |
|   | nt |                                           |                |
|   | of |                                           |                |
|   | t  |                                           |                |
|   | ot |                                           |                |
|   | al |                                           |                |
|   | ma |                                           |                |
|   | ss |                                           |                |
|   | at |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | s  |                                           |                |
|   | pe |                                           |                |
|   | ci |                                           |                |
|   | fi |                                           |                |
|   | ed |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | ba |                                           |                |
|   | si |                                           |                |
|   | s. |                                           |                |
|   | T  |                                           |                |
|   | he |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | b  |                                           |                |
|   | as |                                           |                |
|   | is |                                           |                |
|   | is |                                           |                |
|   | al |                                           |                |
|   | so |                                           |                |
|   | d  |                                           |                |
|   | is |                                           |                |
|   | pl |                                           |                |
|   | ay |                                           |                |
|   | ed |                                           |                |
|   | a  |                                           |                |
|   | nd |                                           |                |
|   | re |                                           |                |
|   | co |                                           |                |
|   | rd |                                           |                |
|   | ed |                                           |                |
|   | f  |                                           |                |
|   | or |                                           |                |
|   | ea |                                           |                |
|   | ch |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | te |                                           |                |
|   | nt |                                           |                |
|   | re |                                           |                |
|   | su |                                           |                |
|   | lt |                                           |                |
|   | (  |                                           |                |
|   | ex |                                           |                |
|   | ce |                                           |                |
|   | pt |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | ). |                                           |                |
+---+----+-------------------------------------------+----------------+
|   | 2  | If a whole grain analyzer that is         | Yes No NA      |
|   | .5 | calibrated to display results on an "as   |                |
|   | .1 | is" moisture basis does NOT display or    |                |
|   |    | record a moisture value, it clearly       |                |
|   |    | indicates that results are expressed on   |                |
|   |    | an "as is" moisture basis.                |                |
+---+----+-------------------------------------------+----------------+
|   | 2  | Ground grain analyzers must ALWAYS        | Yes No NA      |
|   | .5 | display and record a moisture measurement |                |
|   | .2 | for "as is" content results (except       |                |
|   |    | moisture).                                |                |
+---+----+-------------------------------------------+----------------+
| 2 | D  |                                           | Yes No NA      |
| . | ig |                                           |                |
| 6 | it |                                           |                |
|   | al |                                           |                |
|   | a  |                                           |                |
|   | nd |                                           |                |
|   | r  |                                           |                |
|   | ec |                                           |                |
|   | or |                                           |                |
|   | di |                                           |                |
|   | ng |                                           |                |
|   | el |                                           |                |
|   | em |                                           |                |
|   | en |                                           |                |
|   | ts |                                           |                |
|   | s  |                                           |                |
|   | ha |                                           |                |
|   | ll |                                           |                |
|   | n  |                                           |                |
|   | ot |                                           |                |
|   | d  |                                           |                |
|   | is |                                           |                |
|   | pl |                                           |                |
|   | ay |                                           |                |
|   | or |                                           |                |
|   | re |                                           |                |
|   | co |                                           |                |
|   | rd |                                           |                |
|   | a  |                                           |                |
|   | ny |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | va |                                           |                |
|   | lu |                                           |                |
|   | es |                                           |                |
|   | be |                                           |                |
|   | yo |                                           |                |
|   | nd |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | o  |                                           |                |
|   | pe |                                           |                |
|   | ra |                                           |                |
|   | ti |                                           |                |
|   | ng |                                           |                |
|   | r  |                                           |                |
|   | an |                                           |                |
|   | ge |                                           |                |
|   | of |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | de |                                           |                |
|   | vi |                                           |                |
|   | ce |                                           |                |
|   | un |                                           |                |
|   | le |                                           |                |
|   | ss |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | v  |                                           |                |
|   | al |                                           |                |
|   | ue |                                           |                |
|   | re |                                           |                |
|   | pr |                                           |                |
|   | es |                                           |                |
|   | en |                                           |                |
|   | ta |                                           |                |
|   | ti |                                           |                |
|   | on |                                           |                |
|   | in |                                           |                |
|   | cl |                                           |                |
|   | ud |                                           |                |
|   | es |                                           |                |
|   | a  |                                           |                |
|   | c  |                                           |                |
|   | le |                                           |                |
|   | ar |                                           |                |
|   | e  |                                           |                |
|   | rr |                                           |                |
|   | or |                                           |                |
|   | in |                                           |                |
|   | di |                                           |                |
|   | ca |                                           |                |
|   | ti |                                           |                |
|   | on |                                           |                |
|   | (a |                                           |                |
|   | nd |                                           |                |
|   | re |                                           |                |
|   | co |                                           |                |
|   | rd |                                           |                |
|   | ed |                                           |                |
|   | e  |                                           |                |
|   | rr |                                           |                |
|   | or |                                           |                |
|   | m  |                                           |                |
|   | es |                                           |                |
|   | sa |                                           |                |
|   | ge |                                           |                |
|   | wi |                                           |                |
|   | th |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | re |                                           |                |
|   | co |                                           |                |
|   | rd |                                           |                |
|   | ed |                                           |                |
|   | re |                                           |                |
|   | pr |                                           |                |
|   | es |                                           |                |
|   | en |                                           |                |
|   | ta |                                           |                |
|   | ti |                                           |                |
|   | on |                                           |                |
|   | ). |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | If |                                           | Yes No NA      |
| . | an |                                           |                |
| 7 | N  |                                           |                |
|   | IR |                                           |                |
|   | an |                                           |                |
|   | al |                                           |                |
|   | yz |                                           |                |
|   | er |                                           |                |
|   | is |                                           |                |
|   | us |                                           |                |
|   | ed |                                           |                |
|   | to |                                           |                |
|   | d  |                                           |                |
|   | et |                                           |                |
|   | er |                                           |                |
|   | mi |                                           |                |
|   | ne |                                           |                |
|   | a  |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | va |                                           |                |
|   | lu |                                           |                |
|   | e, |                                           |                |
|   | ei |                                           |                |
|   | th |                                           |                |
|   | er |                                           |                |
|   | to |                                           |                |
|   | d  |                                           |                |
|   | et |                                           |                |
|   | er |                                           |                |
|   | mi |                                           |                |
|   | ne |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | of |                                           |                |
|   | an |                                           |                |
|   | \" |                                           |                |
|   | as |                                           |                |
|   | is |                                           |                |
|   | \" |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | te |                                           |                |
|   | nt |                                           |                |
|   | m  |                                           |                |
|   | ea |                                           |                |
|   | su |                                           |                |
|   | re |                                           |                |
|   | me |                                           |                |
|   | nt |                                           |                |
|   | or |                                           |                |
|   | to |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | ve |                                           |                |
|   | rt |                                           |                |
|   | fr |                                           |                |
|   | om |                                           |                |
|   | o  |                                           |                |
|   | ne |                                           |                |
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+---+----+-------------------------------------------+----------------+
| * |    |                                           |                |
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+---+----+-------------------------------------------+----------------+
| 2 | T  |                                           | Yes No NA      |
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+---+----+-------------------------------------------+----------------+
|   | 2  | If the device uses abbreviations for      | Yes No NA      |
|   | .8 | grain names, they conform to the minimum  |                |
|   | .1 | acceptable abbreviations listed below:    |                |
+---+----+-------------------------------------------+----------------+
|   |    | +-----------------------+-------------+   |                |
|   |    | | Grain Type            | Minimum     |   |                |
|   |    | |                       | Acceptable  |   |                |
|   |    | |                       | A           |   |                |
|   |    | |                       | bbreviation |   |                |
|   |    | +-----------------------+-------------+   |                |
|   |    | | Durum Wheat           | DURW        |   |                |
|   |    | |                       |             |   |                |
|   |    | | Hard Red Spring Wheat | HRSW        |   |                |
|   |    | |                       |             |   |                |
|   |    | | Hard Red Winter Wheat | HRWW        |   |                |
|   |    | |                       |             |   |                |
|   |    | | Hard White Wheat      | HDWW        |   |                |
|   |    | |                       |             |   |                |
|   |    | | Soft Red Winter Wheat | SRWW        |   |                |
|   |    | |                       |             |   |                |
|   |    | | Soft White Wheat      | SWW         |   |                |
|   |    | |                       |             |   |                |
|   |    | | Soybeans              | SOYB        |   |                |
|   |    | |                       |             |   |                |
|   |    | | Two-rowed Barley      | TRB         |   |                |
|   |    | |                       |             |   |                |
|   |    | | Six-rowed Barley      | SRB         |   |                |
|   |    | |                       |             |   |                |
|   |    | | Corn                  | CORN        |   |                |
|   |    | +-----------------------+-------------+   |                |
+---+----+-------------------------------------------+----------------+
| * |    |                                           |                |
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| h |    |                                           |                |
| e |    |                                           |                |
| n |    |                                           |                |
| t |    |                                           |                |
| e |    |                                           |                |
| s |    |                                           |                |
| t |    |                                           |                |
| i |    |                                           |                |
| n |    |                                           |                |
| g |    |                                           |                |
| t |    |                                           |                |
| o |    |                                           |                |
| v |    |                                           |                |
| e |    |                                           |                |
| r |    |                                           |                |
| i |    |                                           |                |
| f |    |                                           |                |
| y |    |                                           |                |
| t |    |                                           |                |
| h |    |                                           |                |
| a |    |                                           |                |
| t |    |                                           |                |
| r |    |                                           |                |
| e |    |                                           |                |
| s |    |                                           |                |
| u |    |                                           |                |
| l |    |                                           |                |
| t |    |                                           |                |
| s |    |                                           |                |
| a |    |                                           |                |
| r |    |                                           |                |
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| n |    |                                           |                |
| o |    |                                           |                |
| t |    |                                           |                |
| d |    |                                           |                |
| i |    |                                           |                |
| s |    |                                           |                |
| p |    |                                           |                |
| l |    |                                           |                |
| a |    |                                           |                |
| y |    |                                           |                |
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| d |    |                                           |                |
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| r |    |                                           |                |
| r |    |                                           |                |
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| c |    |                                           |                |
| o |    |                                           |                |
| r |    |                                           |                |
| d |    |                                           |                |
| e |    |                                           |                |
| d |    |                                           |                |
| w |    |                                           |                |
| h |    |                                           |                |
| e |    |                                           |                |
| n |    |                                           |                |
| t |    |                                           |                |
| h |    |                                           |                |
| e |    |                                           |                |
| t |    |                                           |                |
| e |    |                                           |                |
| m |    |                                           |                |
| p |    |                                           |                |
| e |    |                                           |                |
| r |    |                                           |                |
| a |    |                                           |                |
| t |    |                                           |                |
| u |    |                                           |                |
| r |    |                                           |                |
| e |    |                                           |                |
| r |    |                                           |                |
| a |    |                                           |                |
| n |    |                                           |                |
| g |    |                                           |                |
| e |    |                                           |                |
| i |    |                                           |                |
| s |    |                                           |                |
| e |    |                                           |                |
| x |    |                                           |                |
| c |    |                                           |                |
| e |    |                                           |                |
| e |    |                                           |                |
| d |    |                                           |                |
| e |    |                                           |                |
| d |    |                                           |                |
| . |    |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | T  |                                           | Yes No NA      |
| . | he |                                           |                |
| 9 | a  |                                           |                |
|   | mb |                                           |                |
|   | ie |                                           |                |
|   | nt |                                           |                |
|   | t  |                                           |                |
|   | em |                                           |                |
|   | pe |                                           |                |
|   | ra |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | r  |                                           |                |
|   | an |                                           |                |
|   | ge |                                           |                |
|   | ov |                                           |                |
|   | er |                                           |                |
|   | w  |                                           |                |
|   | hi |                                           |                |
|   | ch |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | an |                                           |                |
|   | al |                                           |                |
|   | yz |                                           |                |
|   | er |                                           |                |
|   | m  |                                           |                |
|   | ay |                                           |                |
|   | be |                                           |                |
|   | us |                                           |                |
|   | ed |                                           |                |
|   | is |                                           |                |
|   | s  |                                           |                |
|   | pe |                                           |                |
|   | ci |                                           |                |
|   | fi |                                           |                |
|   | ed |                                           |                |
|   | a  |                                           |                |
|   | nd |                                           |                |
|   | co |                                           |                |
|   | ve |                                           |                |
|   | rs |                                           |                |
|   | a  |                                           |                |
|   | r  |                                           |                |
|   | an |                                           |                |
|   | ge |                                           |                |
|   | no |                                           |                |
|   | le |                                           |                |
|   | ss |                                           |                |
|   | th |                                           |                |
|   | an |                                           |                |
|   | 10 |                                           |                |
|   | C  |                                           |                |
|   | to |                                           |                |
|   | 30 |                                           |                |
|   | C. |                                           |                |
|   | No |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | va |                                           |                |
|   | lu |                                           |                |
|   | es |                                           |                |
|   | m  |                                           |                |
|   | ay |                                           |                |
|   | be |                                           |                |
|   | d  |                                           |                |
|   | is |                                           |                |
|   | pl |                                           |                |
|   | ay |                                           |                |
|   | ed |                                           |                |
|   | wh |                                           |                |
|   | en |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | t  |                                           |                |
|   | em |                                           |                |
|   | pe |                                           |                |
|   | ra |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | r  |                                           |                |
|   | an |                                           |                |
|   | ge |                                           |                |
|   | is |                                           |                |
|   | e  |                                           |                |
|   | xc |                                           |                |
|   | ee |                                           |                |
|   | de |                                           |                |
|   | d. |                                           |                |
|   | An |                                           |                |
|   | a  |                                           |                |
|   | pp |                                           |                |
|   | ro |                                           |                |
|   | pr |                                           |                |
|   | ia |                                           |                |
|   | te |                                           |                |
|   | e  |                                           |                |
|   | rr |                                           |                |
|   | or |                                           |                |
|   | m  |                                           |                |
|   | es |                                           |                |
|   | sa |                                           |                |
|   | ge |                                           |                |
|   | s  |                                           |                |
|   | ha |                                           |                |
|   | ll |                                           |                |
|   | be |                                           |                |
|   | d  |                                           |                |
|   | is |                                           |                |
|   | pl |                                           |                |
|   | ay |                                           |                |
|   | ed |                                           |                |
|   | wh |                                           |                |
|   | en |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | t  |                                           |                |
|   | em |                                           |                |
|   | pe |                                           |                |
|   | ra |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | of |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | an |                                           |                |
|   | al |                                           |                |
|   | yz |                                           |                |
|   | er |                                           |                |
|   | is |                                           |                |
|   | o  |                                           |                |
|   | ut |                                           |                |
|   | si |                                           |                |
|   | de |                                           |                |
|   | i  |                                           |                |
|   | ts |                                           |                |
|   | s  |                                           |                |
|   | pe |                                           |                |
|   | ci |                                           |                |
|   | fi |                                           |                |
|   | ed |                                           |                |
|   | o  |                                           |                |
|   | pe |                                           |                |
|   | ra |                                           |                |
|   | ti |                                           |                |
|   | ng |                                           |                |
|   | ra |                                           |                |
|   | ng |                                           |                |
|   | e. |                                           |                |
+---+----+-------------------------------------------+----------------+
| 2 | T  |                                           | Yes No NA      |
| . | he |                                           |                |
| 1 | c  |                                           |                |
| 0 | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | r  |                                           |                |
|   | an |                                           |                |
|   | ge |                                           |                |
|   | at |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | mo |                                           |                |
|   | is |                                           |                |
|   | tu |                                           |                |
|   | re |                                           |                |
|   | b  |                                           |                |
|   | as |                                           |                |
|   | is |                                           |                |
|   | s  |                                           |                |
|   | pe |                                           |                |
|   | ci |                                           |                |
|   | fi |                                           |                |
|   | ed |                                           |                |
|   | in |                                           |                |
|   | T  |                                           |                |
|   | ab |                                           |                |
|   | le |                                           |                |
|   | N  |                                           |                |
|   | .1 |                                           |                |
|   | .1 |                                           |                |
|   | is |                                           |                |
|   | s  |                                           |                |
|   | pe |                                           |                |
|   | ci |                                           |                |
|   | fi |                                           |                |
|   | ed |                                           |                |
|   | f  |                                           |                |
|   | or |                                           |                |
|   | ea |                                           |                |
|   | ch |                                           |                |
|   | g  |                                           |                |
|   | ra |                                           |                |
|   | in |                                           |                |
|   | or |                                           |                |
|   | se |                                           |                |
|   | ed |                                           |                |
|   | f  |                                           |                |
|   | or |                                           |                |
|   | w  |                                           |                |
|   | hi |                                           |                |
|   | ch |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | an |                                           |                |
|   | al |                                           |                |
|   | yz |                                           |                |
|   | er |                                           |                |
|   | is |                                           |                |
|   | to |                                           |                |
|   | be |                                           |                |
|   | u  |                                           |                |
|   | se |                                           |                |
|   | d. |                                           |                |
|   | If |                                           |                |
|   | a  |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | v  |                                           |                |
|   | al |                                           |                |
|   | ue |                                           |                |
|   | is |                                           |                |
|   | d  |                                           |                |
|   | is |                                           |                |
|   | pl |                                           |                |
|   | ay |                                           |                |
|   | ed |                                           |                |
|   | wh |                                           |                |
|   | en |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | r  |                                           |                |
|   | an |                                           |                |
|   | ge |                                           |                |
|   | is |                                           |                |
|   | ex |                                           |                |
|   | ce |                                           |                |
|   | ed |                                           |                |
|   | ed |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | de |                                           |                |
|   | vi |                                           |                |
|   | ce |                                           |                |
|   | g  |                                           |                |
|   | iv |                                           |                |
|   | es |                                           |                |
|   | a  |                                           |                |
|   | c  |                                           |                |
|   | le |                                           |                |
|   | ar |                                           |                |
|   | in |                                           |                |
|   | di |                                           |                |
|   | ca |                                           |                |
|   | ti |                                           |                |
|   | on |                                           |                |
|   | th |                                           |                |
|   | at |                                           |                |
|   | t  |                                           |                |
|   | he |                                           |                |
|   | c  |                                           |                |
|   | on |                                           |                |
|   | st |                                           |                |
|   | it |                                           |                |
|   | ue |                                           |                |
|   | nt |                                           |                |
|   | r  |                                           |                |
|   | an |                                           |                |
|   | ge |                                           |                |
|   | h  |                                           |                |
|   | as |                                           |                |
|   | be |                                           |                |
|   | en |                                           |                |
|   | e  |                                           |                |
|   | xc |                                           |                |
|   | ee |                                           |                |
|   | de |                                           |                |
|   | d. |                                           |                |
+---+----+-------------------------------------------+----------------+

+-------------------------+------------------+------------------------+
| *Table N.1.1. Constant  |                  |                        |
| Moisture Basis for Type |                  |                        |
| Evaluation and Field    |                  |                        |
| Inspection*             |                  |                        |
+-------------------------+------------------+------------------------+
| *Grain Type or Class*   | *                | *Moisture Basis*       |
|                         | Constituents(s)* |                        |
+-------------------------+------------------+------------------------+
| *Durum Wheat, Hard Red  | *Protein*        | *12 %*                 |
| Spring Wheat, Hard Red  |                  |                        |
| Winter Wheat, Hard      |                  |                        |
| White Wheat, Soft Red   |                  |                        |
| Winter Wheat, Soft      |                  |                        |
| White Wheat*            |                  |                        |
+-------------------------+------------------+------------------------+
| *Soybeans*              | *Protein*        | *13 %*                 |
|                         |                  |                        |
|                         | *Oil*            |                        |
+-------------------------+------------------+------------------------+
| *Two-rowed Barley*      | *Protein*        | *0 % (dry basis)*      |
|                         |                  |                        |
| *Six-rowed Barley*      |                  |                        |
+-------------------------+------------------+------------------------+
| *Corn*                  | *Protein*        | *0 % (dry basis)*      |
|                         |                  |                        |
|                         | *Oil*            |                        |
|                         |                  |                        |
|                         | *Starch*         |                        |
+-------------------------+------------------+------------------------+

  --------------- ------------------------------------------------- -----------------
  2.11            For whole grain analyzers only (this item is not  Yes No NA
                  applicable to ground grain instruments). The      
                  temperature range is specified for each grain or  
                  seed for which the analyzer is to be used. The    
                  specified range covers a range no less than 10 C  
                  to 30 C. No constituent values may be displayed   
                  when the temperature range is exceeded. An        
                  appropriate error message is displayed when the   
                  temperature of the grain sample exceeds the range 
                  for the grain.                                    

  2.12            For whole grain analyzers only (this item is not  Yes No NA
                  applicable to ground grain instruments). The      
                  maximum allowable difference in temperature       
                  between the instrument environment (ambient       
                  temperature) and the sample for which an accurate 
                  constituent determination can be made is          
                  specified. The minimum temperature range shall    
                  cover at least 10 C*.* For temperature            
                  differences outside this range, constituent       
                  values are not displayed and an appropriate error 
                  message is displayed.                             

  **Code                                                            
  Reference:                                                        
  S.1.4.1.                                                          
  Operating                                                         
  Temperature**                                                     

  2.13            An analyzer shall not display or record any       Yes No NA
                  usable values until the operating temperature     
                  necessary for accurate determination has been     
                  attained, or                                      

  2.14            The analyzer shall bear a conspicuous statement   Yes No NA
                  adjacent to the indication stating that the       
                  analyzer shall be turned on for a time period     
                  specified by the manufacturer prior to use.       

  2.15            If the analyzer will not meet tolerance           Yes No NA
                  requirements because there is an upper internal   
                  operating temperature limit that could be         
                  exceeded when operating within the ambient        
                  temperature range specified by the manufacturer,  
                  a means of sensing and indicating an              
                  over-temperature condition shall be provided.     

  **Code                                                            
  Reference:                                                        
  S.1.5 Value of                                                    
  Smallest Unit**                                                   

  2.16            The display permits constituent value             Yes No NA
                  determination to both 0.01 % and 0.1 %            
                  resolution. (The 0.1 % resolution is for          
                  commercial transactions; the 0.01 % resolution is 
                  for calibration purposes only, not for commercial 
                  purposes.)                                        
  --------------- ------------------------------------------------- -----------------

> **3. Design of NIR Analyzers**

+---+-------------------------------------------------+----------------+
| * |                                                 |                |
| * |                                                 |                |
| C |                                                 |                |
| o |                                                 |                |
| d |                                                 |                |
| e |                                                 |                |
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| * |                                                 |                |
| * |                                                 |                |
+---+-------------------------------------------------+----------------+
| 3 | Instrument hardware/software design and         | Yes No NA      |
| . | calibration procedures permit calibration       |                |
| 6 | development, and calibrations can be            |                |
|   | mathematically transferred between instruments  |                |
|   | of like models.                                 |                |
+---+-------------------------------------------------+----------------+
| * |                                                 |                |
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| C |                                                 |                |
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| : |                                                 |                |
+---+-------------------------------------------------+----------------+
| 3 | Name and address or trademark of the            | Yes No NA      |
| . | manufacturer.                                   |                |
| 1 |                                                 |                |
| 3 |                                                 |                |
+---+-------------------------------------------------+----------------+
| 3 | The type or design of the device for which the  | Yes No NA      |
| . | operating instructions are intended to be used. |                |
| 1 |                                                 |                |
| 4 |                                                 |                |
+---+-------------------------------------------------+----------------+
| 3 | Date of issue.                                  | Yes No NA      |
| . |                                                 |                |
| 1 |                                                 |                |
| 5 |                                                 |                |
+---+-------------------------------------------------+----------------+
| 3 | The kind of classes of grain or seed for which  | Yes No NA      |
| . | the device is designed to measure constituent   |                |
| 1 | values.                                         |                |
| 6 |                                                 |                |
+---+-------------------------------------------------+----------------+
| 3 | The limitations of use, including but not       | Yes No NA      |
| . | limited to constituent range, grain or seed     |                |
| 1 | temperature, kind or class of grain or seed,    |                |
| 7 | instrument temperature, voltage and frequency   |                |
|   | ranges, electromagnetic interference, and       |                |
|   | necessary accessory equipment.                  |                |
+---+-------------------------------------------------+----------------+
| 3 | The appropriate user selectable options or      | Yes No NA      |
| . | settings for each calibration installed in the  |                |
| 1 | device.                                         |                |
| 8 |                                                 |                |
+---+-------------------------------------------------+----------------+

**6. Dual Certification -- Could a Single Certificate be Used?**

**Background:** Of the five Grain Moisture Meter (GMM) types with active
NTEP Certificates of Conformance (CC\'s) two are whole-grain Near
Infrared (NIR) Instruments with the potential to seek certification as
NIR Grain Analyzers. In a previous Sector meeting, the question was
raised as to whether a single CC could be issued to cover devices
certified as both GMM's and NIR Grain Analyzers. Because of time
constraints consideration of this question was postponed to a future
meeting.

**Discussion:** In deciding whether a single CC could be issued to cover
devices certified as both GMM's and NIR Grain Analyzers, there are two
requirements to consider:

1)  CC\'s for GMM's automatically expire July 1. To maintain \"active\"
    status, meters must remain in the NTEP on-going calibration program
    and the CC\'s must be re-issued annually with valid calibration
    constants for moisture.

2)  NIR Grain Analyzers that display a measured whole grain moisture
    value are required to comply with the requirements of the GMM Code
    and be type approved as a grain moisture meter.

When an instrument has been approved under both codes, it would seem
that NIR Grain Analyzer CC's are subordinate to GMM CC's, because
failure to maintain an "active" GMM CC would automatically invalidate
the corresponding NIR Grain Analyzer CC. A single CC, such as a "GMM CC
with NIR Grain Analyzer Certification" would have to be re‑issued
annually (and whenever a calibration change is made), there would be no
ambiguity regarding the NTEP status of the instrument and its
calibrations. With a single certificate, Weights and Measures (W&M)
personnel would have only one CC number to check. Manufacturers would
have only one CC to maintain per instrument type. Marking requirements
would be simplified. The maintenance fee structure for a CC with a
"certification" for compliance with another code could be set to recover
any loss in NCWM, Inc. revenue that would result from the elimination of
the second certificate.

**Conclusion and Recommendation:** The Sector agreed to ask the NTEP
Committee to consider recommending that NCWM, Inc. authorize issuing a
single CC for devices successfully type evaluated under two
inter-related codes (e.g., a "Grain Moisture Meter CC with Near Infrared
Grain Analyzer Certification" or, simply, "NIR Grain Analyzer with Dual
Certification").

**7. A Message from the NCWM Board of Directors**

Don Onwiler, Nebraska Department of Agriculture, Division of Weights &
Measures, representing the NCWM Board of Directors (BOD), informed the
Sector that the National Type Evaluation Program (NTEP) is working well,
largely due to the efforts of the staff of NIST's Office of Weights and
Measures and NCWM, Inc.'s NTEP Director, Steve Patoray. NTEP is solvent;
however, the BOD believes that the major work the GMM & NIR Sectors has
been completed and it questions whether annual Sector meetings will be
required in the future. The GMM Sector contributes only \$500 annually
to NTEP. The BOD figures the total staff costs associated with the
GMM/NIR Sector is about \$15,000. In a cost cutting effort for 2002, no
state members received funding for travel to attend this GMM/NIR Sector
meeting. However, the Board paid Don Onwiler's travel costs to attend
the sector meeting and to provide the sector with an explanation of the
BOD's cost cutting efforts, answer questions and address the concerns of
the sector.

**Discussion:** Sector members were disturbed about what they heard.
Several members believed that the cost of the Sector meeting was a small
portion of the \$15,000 cited as the cost of Sector support. The 2000,
2001, and 2002 meetings have all been held in Kansas City, MO at the
National Weather Service Training Center with no cost for the meeting
room or for digital projectors when needed. Sector meeting agendas and
meeting summaries are distributed by e-mail. Other than cookies, soft
drinks, and Steve Patoray's time and travel, the cost of a Sector
meeting should be very small now that funding of public member travel
had been withdrawn. One member expressed the hope that the Board would
obtain a detailed breakdown of costs directly related to the Sector's
recent meeting before making any decisions about withdrawing support for
annual meetings. There was concern that support for the GMM NTEP
certificate program would be the next thing to be withdrawn. The Sector
has always known that there would never be a large number of GMM (or
NIR) CC's, but the value of the program to regulating agencies,
producers, the grain trade, and industry is many times greater than the
annual cost of the program. Rich Pierce, GIPSA, reported that GIPSA and
OWM continue to support the program, with each providing \$18,000 per
year for the NTEP Phase II program. He said GIPSA was interested in
expanding the NTEP program to encompass additional devices. GIPSA is
making increased use of cross-utilized equipment, in which devices owned
by industry are also used by GIPSA for on-site official inspection. The
NTEP program is a critical element in that regard. Don Onwiler responded
that NCWM is committed to continuing the NTEP program for grain moisture
meters. There is no reason for the Sector to go away, but it may not
need to meet every year. Diane Lee, NIST-OWM, suggested that it might be
possible for OWM to host a technical session for NIST Handbook 44 issues
that need to be resolved or that require additional discussion if the
NCWM BOD chooses not to host a sector meeting. Dr. Charles Hurburgh,
Jr., ISU, suggested that the possibility of obtaining funding through
Federal grant programs, for some of the work done by the Sector, should
be explored. He noted that requests for funding of projects involving
joint efforts of regulators, producers, the grain trade, and industry
are usually received positively by the funding authority.

In order to promote greater uniformity in commercial grain inspection
results, Congress passed the Grain Quality Incentives Act of 1990 that
authorized the Federal Grain Inspection Service to work in conjunction
with the National Institute for Standards and Technology and the
National Conference on Weights and Measures to:

1)  identify inspection instruments requiring standardization;

2)  establish performance criteria for commercial grain inspection
    instruments;

3)  develop a national program to approve grain inspection instruments
    for commercial inspection; and

4)  develop standard reference materials or other means necessary for
    calibration or testing of approved instruments.

In 1992, partly through the efforts of Sid Colbrook, Illinois Department
of Agriculture, who was then NCWM Chairman, the GMM and NIR Sectors were
established. The Sectors became not only working groups for the
development of device standards and test/evaluation methods; they also
provided a forum for manufacturers, user groups, state regulators,
GIPSA/FGIS, and NIST-OWM to air issues of mutual concern relating to
grain inspection and measurement, including Handbook 44 issues and the
GMM ongoing calibration maintenance program. If the NCWM Board views the
current purpose of the Sectors as limited to dealing with Publication 14
issues uncovered during NTEP testing, then another forum will have to be
found for these other issues of interest (and importance) to members of
the Sector.

**8. A Quality Control Procedure for Grain Analysis at a Country
Elevator**

Dr. Charles Hurburgh, Jr., Agricultural & Biosystems Engineering - Iowa
State University, described a quality control system implemented by
Farmers Cooperative Elevator Company at its Odebolt, Iowa facility. The
system was developed under a grant from the Iowa Grain Quality
Initiative with the intention of learning how to develop a quality
system and then to replicate it at 32 other locations in its northwest
Iowa. The initial concept was to use the quality management system for
market differentiation -- to be able to certify the identity of
specialty crops through a documented identity preservation system.
During the early stages of the project it became apparent that the
quality system had benefits as a management system and had improved
operations to the extent that the system was worth implementing even
without the prospects of market differentiation by identity
preservation. In fact, Dr. Hurburgh estimated that the system has
generated two dollars for every one dollar invested.

Four important criteria were deemed necessary for the system: 1) it must
be a certified system; 2) it must have established credibility; 3) there
must be 3^rd^ party auditing; and 4) it must have international
recognition. The system implemented is based on the American Institute
of Baking (AIB) International Gold Standard Certification Program which
with certification and auditing through AIB's Quality System Evaluation
includes about 80 % of the requirements of ISO-9000. Some of the key
elements of the system include: written work procedures, flowcharts for
sampling and grading processes, setting tolerances for grade factors,
using grade factor control charts and comparison charts (in-house
measurements compared to official measurements) for both inbound and
outbound grade factors. The objective being to make house grades as just
accurate as official grades, and to provide documented evidence of this
equivalence.

Quality control data was used to evaluate the accuracy of house grades.
The initial target was that no more than 5 % of the individual tests
would be out of tolerance. Operator training and incentives were based
on these data. Control charts and comparison charts made it easy to
identify trends and apply corrections before the trends became problems
-- continuous data is more useful than spot checks. Better accuracy on
inbound measurements resulted in more accurate inventory records and
assisted in merchandising. The documentation of QC data gave customers
confidence in house grades.

The widespread implementation of quality management systems (QMS) like
the one in Odebolt, Iowa could have major implications on regulatory
programs such as those used for grain moisture meters and (soon)
near-infrared grain analyzers. If documented references are used, a
certified QMS creates more useful data than annual device inspections.
The structure of regulatory programs may change to auditing and
verification that a quality system is in place. Review of data may
replace testing of devices and reference standards may replace
monitoring.

**Discussion:** Following Dr. Hurburgh's presentation, Don Onwiler,
Nebraska Dept. of Agriculture, Division of Weights & Measures, suggested
that in the case of prepackaging scales (automatic weighing systems)
there is already precedence for process verification rather than device
inspection. In some such states scales are not checked; instead, the
packaged product is checked for correct weight.

**9. Time and Place for Next Meeting**

The next meeting is tentatively planned for the week of August 18, 2003,
in the Kansas City, MO area. Meetings will be held in one of the meeting
rooms at the National Weather Service Training Center if available. A
tentative schedule is shown below.

> Wednesday, August 20 1:00 pm - 5:00 pm GMM Sector Meeting
>
> Thursday, August 21 8:00 am - 12:00 noon GMM Sector Meeting
>
> Thursday, August 21 1:00 pm - 5:00 pm Joint Session GMM & NIR Analyzer
>
> Friday, August 22 8:00 am - 12:00 noon NIR Grain Analyzer Sector
> Meeting

# Appendix E

## National Type Evaluation Technical Committee

## Measuring Sector Annual Meeting

**October 11-12, 2002, Richmond, Virginia**

**Final Summary**

[Carry-over Items 1](#__RefHeading___Toc62281949)

[1. Recommendations to Update NCWM Publication 14 to Reflect Changes to
NIST Handbook 44 1](#__RefHeading___Toc62281950)

[2. Test Draft Size for Initial and Permanence Test for Mass Flow Meters
6](#__RefHeading___Toc62281951)

[3. Testing Required for an Electronic Indicator with a CC, Interfaced
with a Measuring Element with a CC not Previously Evaluated Together
7](#__RefHeading___Toc62281952)

[4. On Screen Display of Model and Version Number for Software
8](#__RefHeading___Toc62281953)

[New Items 11](#__RefHeading___Toc62281954)

[5. Marking of Product Measured on Meters in Multi-Product Dispensers
11](#__RefHeading___Toc62281955)

[6. Multiple Measuring Elements with a Single Provision for Sealing
Adjustable Components 13](#__RefHeading___Toc62281956)

[7. Tolerance for Product Depletion Test
13](#__RefHeading___Toc62281957)

[8. Product Family Tables for MAG Meters
14](#__RefHeading___Toc62281958)

[9. Use of Discount and Loyalty Cards and Discounts for Actions After
the Completion of a Retail Motor-Fuel Delivery
14](#__RefHeading___Toc62281959)

[10. Acceptable Symbols or Wording to Identify Unit Price, Total Price,
and Quantity on a Retail Motor-Fuel Dispenser
15](#__RefHeading___Toc62281960)

[11. NTEP Laboratory Recommendations for Changes to NCWM Publication 14
15](#__RefHeading___Toc62281961)

[12. Definition for Cryogenic Liquid-Measuring Device
17](#__RefHeading___Toc62281962)

[13. Next Meeting 17](#__RefHeading___Toc62281963)

[Additional Item: 18](#__RefHeading___Toc62281964)

[14. Update LMD Section of Publication 14
18](#__RefHeading___Toc62281965)

[]{#__RefHeading___Toc62281949 .anchor}Carry-over Items

[]{#__RefHeading___Toc62281950 .anchor}1. Recommendations to Update NCWM
Publication 14 to Reflect Changes to NIST Handbook 44

**Source:** NIST/WMD

**Background:** The 87^th^ National Conference on Weights and Measures
(NCWM) adopted the following items that will be reflected in the 2003
Edition of NIST Handbook 44 and NCWM Publication 14. These items are
part of the agenda to inform the Measuring Sector of the NCWM actions
and recommend changes to NCWM Publication 14.

**Recommendation:** The Sector reviewed the following recommended
changes to Publication 14 based on changes to NIST Handbook 44:

A)  **S.3.2.(b) Exceptions for Diversion of Measured Liquid**

> During its 2002 Annual Meeting, the NCWM agreed to amend Handbook 44
> LMD Code paragraph S.3.2. Exceptions as follows:
>
> **S.3.2. Exceptions.** - The provisions of S.3.1. Diversion Prohibited
> shall not apply to~~:~~

~~(a)~~ truck refueling devices when diversion of flow to other than the
receiving vehicle cannot readily be accomplished and is readily
apparent. Allowable deterrents include, but are not limited to, physical
barriers to adjacent driveways, visible valves, or lighting systems that
indicate which outlets are in operation, and explanatory signs;

~~(b)~~ ~~other devices, when all discharge outlets designed to operate
simultaneously are 3.8 cm (1.5 in) in diameter or larger.~~

> **Recommendation:** The Sector was asked to consider the removal of
> the reference to discharge lines with a diameter of 3.8 cm (1 ½ in) or
> larger in Code reference S.3.2. and paragraph 10.5 from Section 10 on
> page LMD-33 of the Checklist and Test Procedures of NCWM Publication
> 14, Measuring Devices, Chapter 2, 2002 edition as follows:
>
> **10. Discharge Lines and Discharge Line Valves**
>
> **Code Reference: S.3.2. Exceptions**
>
> If suitable means are provided to prevent the diversion of liquid flow
> to other than the receiving vehicle, devices that are specifically
> installed for fueling trucks are exempt from the provisions of S.3.1.
> and may have two outlets operating simultaneously. ~~Similarly, the
> requirements of S.3.1. do not apply to devices on which all discharge
> outlets designed to operate simultaneously are 3.8 cm (1-1/2 in) in
> diameter or larger.~~

  ----------- ----------------------------------------------- -----------------
  10.4.       For devices that are specifically installed for **Yes** **No**
              fueling trucks, two outlets may be operated     **NA**
              simultaneously only if suitable means are       
              provided to ensure that diversion of flow to    
              other than the receiving vehicle cannot readily 
              be accomplished and is readily apparent. Such   
              means include, but are not limited to, physical 
              barriers to adjacent driveways, visible valves  
              or lighting systems indicating which outlets    
              are in operation, and explanatory signs.        

  ~~10.5.~~   ~~For other devices, two outlets may be         **~~Yes~~**
              simultaneously operated only if all discharge   **~~No~~**
              outlets designed to operate simultaneously are  **~~NA~~**
              3.8 cm (1-1/2 in).~~                            
  ----------- ----------------------------------------------- -----------------

> **Discussion/Conclusion:** There was no discussion on the amended
> language for Publication 14, Section 10. The Sector recommends that
> the NTEP Committee amend Publication 14, Section 10 as shown above.

B)  **S.4.4.1 Discharge Rates and S.4.4.2. Location of Marking
    Information**

> During its 2002 Annual Meeting, the NCWM agreed to amend Handbook 44
> LMD Code paragraph S.4.4. Retail Devices as follows:
>
> ***S.4.4. Retail Devices.***
>
> ***[S.4.4.1. Discharge Rates]{.underline}. - On a retail device with a
> designed maximum discharge rate of ~~100~~ 115 L (~~25~~ 30 gal) per
> minute or greater, the maximum and minimum discharge rates shall be
> marked on an exterior surface of the device and shall be visible after
> installation. The minimum discharge rate shall not exceed 20 % of the
> maximum discharge rate.***
>
> ***\[Nonretroactive as of January 1, 1985.\]***
>
> ***[S.4.4.2. Location of Marking Information; Retail Motor-Fuel
> Dispensers. -- The required marking information in the General Code,
> Paragraph G-S.1. shall appear as follows:]{.underline}***
>
> ***[(a)]{.underline} [Placement of this information shall not be on a
> portion of the device that can be readily removed or interchanged
> without the use of a tool separate from the device ]{.underline}***
>
> ***[(b)]{.underline} [The information shall appear 24 to 60 inches
> from the base of the dispenser when placed on the outside of the
> device.]{.underline}***
>
> ***[(c)]{.underline} [When placed behind an access door or panel the
> information shall appear 24 inches to 60 inches from the base of the
> dispenser in a readily legible position. The use of a dispenser key
> shall not be considered a tool separate from the
> device.]{.underline}***
>
> ***\[Nonretroactive as of January 1, 2003\]***
>
> **Recommendation:** The Sector was asked to consider amending Code
> Reference S.4.4. in Section 11 on page LMD-33 of the Checklist and
> Test Procedures of NCWM Publication 14, Measuring Devices, Chapter 2,
> 2002 edition and add Code Reference S.4.4.2. as follows:
>
> **11. Marking**
>
> **Code Reference: S.4.4.[1.]{.underline} Marking Requirements For
> Retail Devices Only**

  ------ ----------------------------------------------- -----------------
  11.2   On a retail device with a designed maximum      **Yes** **No**
         discharge rate of rates ~~100~~                 **NA**
         [115]{.underline} L/min (~~25~~                 
         [30]{.underline} gpm) or greater, the maximum   
         and minimum discharge rates shall be marked on  
         an exterior surface of the device and be        
         visible after installation. The minimum rate    
         shall not exceed 20 % of the maximum discharge  
         rate.                                           

  ------ ----------------------------------------------- -----------------

> **[Code Reference: S.4.4.2. Location of Marking
> Information]{.underline}**

+-----+-----------------------------------------------+----------------+
| 1   | [The required marking information in the      | **Yes** **No** |
| 1.3 | General Code, Paragraph G-S.1. shall be       | **NA**         |
|     | located as follows:]{.underline}              |                |
+-----+-----------------------------------------------+----------------+
|     | > \(a\) [Placement of this information shall  | **Yes** **No** |
|     | > not be on a portion of the device that can  | **NA**         |
|     | > readily removed or interchanged without the |                |
|     | > use of a tool separate from the             |                |
|     | > device.]{.underline}                        |                |
+-----+-----------------------------------------------+----------------+
|     | > \(b\) [When placed on the outside to the    | **Yes** **No** |
|     | > device the information shall appear 24 to   | **NA**         |
|     | > 60 inches from the base of the              |                |
|     | > dispenser.]{.underline}                     |                |
+-----+-----------------------------------------------+----------------+
|     | > \(c\) [When placed behind an access door or | **Yes** **No** |
|     | > panel the information shall appear 24 to 60 | **NA**         |
|     | > inches from the base of the dispenser in a  |                |
|     | > readily legible position. The use of a      |                |
|     | > dispenser key shall not be considered a     |                |
|     | > tool separate from the device.]{.underline} |                |
+-----+-----------------------------------------------+----------------+

> **Discussion/Conclusion:** During the 2002 Measuring Sector meeting,
> there was no discussion on the recommendation to amend Publication 14,
> Section 11. The Sector recommends that the NCWM NTEP committee approve
> the changes shown above.
>
> The Sector also noted that marking requirements for discharge rates
> are required to be located on an external surface of the device
> without any reference to being located within a specified height
> range. The Sector members also indicated that it is also appropriate
> to include the markings for discharge rates required in paragraph
> S.4.4.1. with the other markings in accordance with the requirements
> of paragraph S.4.4.2. One NTEP laboratory stated that some weights and
> measures officials have incorrectly interpreted paragraph S.4.4.1. to
> mean that a flow rate greater than or less than 20 % of the maximum
> discharge is not acceptable. The Sector agreed to forward to the S&T
> Committee through the SWMA a proposal to modify S.4.4.1. that includes
> an example of how the requirement should be applied as follows:
>
> ***S.4.4.1. Discharge Rates. - On a retail device with a designed
> maximum discharge rate of 115 L (30 gal) per minute or greater, the
> maximum and minimum discharge rates shall be marked ~~on an exterior
> surface of the device and shall be visible after installation~~ [in
> accordance with S.4.4.2]{.underline}. The minimum discharge rate shall
> not exceed 20 % of the maximum discharge rate.***
>
> **[Example: With a marked maximum discharge rate of 230 L/m (60 gpm),
> the marked minimum discharge rate shall be 45 L/m (12 gpm) or less
> (e.g., 40 L/m (10 gpm) is acceptable). A marked minimum discharge rate
> greater than 45 L/m (12 gpm) (e.g., 60 L/m (15 gpm)) is not
> acceptable.]{.underline}**

C)  **Recognize Mass Units of Measurement**

> During its 2002 Annual Meeting the NCWM agreed to amend the Handbook
> 44 Cryogenic Liquid-Measuring Devices Code to recognize units of mass
> as follows:
>
> **S.1.1.2. Units. - A device shall indicate and record, if equipped to
> record, its deliveries in terms of: [kilograms or pounds;]{.underline}
> liters or gallons of liquid at the normal boiling point of the
> specific cryogenic product; cubic meters (cubic feet) of gas at a
> normal temperature of 21 C (70 F) and an absolute pressure of 101.325
> kPa (14.696 psia); or decimal subdivisions or multiples of the
> measured units cited above.**
>
> **S.1.1.3. Value of Smallest Unit. - The value of the smallest unit of
> indicated delivery, and recorded delivery, if the device is equipped
> to record, shall not exceed the equivalent of:**
>
> **(a) for small delivery devices**
>
> **(1) 1 L**
>
> **(2) 0.1 gal**
>
> **(3) ~~0.1 m^3^ of gas~~[1 kg]{.underline}**
>
> **(4) ~~10 cubic feet of gas~~ [1 lb]{.underline}**
>
> **[(5) 0.1 m^3^ of gas]{.underline}**
>
> **[(6) 10 cubic feet of gas]{.underline}**
>
> **(b) for large delivery devices**
>
> **(1) 10 L**
>
> **(2) 1 gal**
>
> **(3) ~~1 m^3^ of gas~~ 10 kg**
>
> **(4) ~~100 ft^3^ of gas~~ 10 lb**
>
> **[(5) 1 m^3^ of gas]{.underline}**
>
> **[(6) 100 ft^3^ of gas]{.underline}**
>
> **S.2.4. Automatic Temperature or Density Compensation. - A device
> shall be equipped with automatic means for adjusting the indication
> and/or recorded representation of the measured quantity of the
> product, to indicate and/or record in terms of: [kilograms or
> pounds;]{.underline} or liters or gallons of liquid at the normal
> boiling point of the specific cryogenic product; or the equivalent
> cubic meters (cubic feet) of gas at a normal temperature of 21 °C
> (70 °F) and an absolute pressure of 101.325 kPa (14.696 lb/in^2^
> absolute). *When a compensator system malfunctions, the indicating and
> recording elements may indicate and record in uncompensated volume if
> the mode of operation is clearly indicated, e.g., by a marked
> annunciator, recorded statement, or other obvious means.\****
>
> ***\[\*Nonretroactive as of January 1, 1992.\]***
>
> **Code Reference: S.1.1.2. Units**

  ------ ----------------------------------------------- -----------------
  7.7    The device shall indicate, and record if        **Yes** **No**
         equipped to record, its deliveries in terms     **NA**
         of[: kilograms or pounds;]{.underline} liters   
         or gallons of liquid at the normal boiling      
         point of the specific cryogenic product; cubic  
         meters, or cubic feet of gas at a normal        
         temperature of 21 °C (70 °F) and an absolute    
         pressure of 101.325 kPa (14.696 psia);          
         subdivisions or multiples of the measured units 
         cited above.                                    

  ------ ----------------------------------------------- -----------------

> **Code Reference: S.1.1.3. Value of Smallest Unit**
>
> The value of the smallest unit of indicated delivery and recorded
> delivery if the meter is equipped to record, shall not exceed the
> equivalent of:

+-----+-----------------------------------------------+----------------+
| 7.8 | \(a\) for small delivery devices (max. rated  | **Yes** **No** |
|     | flow *75* gpm or less)                        | **NA**         |
|     |                                               |                |
|     | (1) 1 L                                       |                |
|     |                                               |                |
|     | (2) 0.1 gal                                   |                |
|     |                                               |                |
|     | (3) 1 kg                                      |                |
|     |                                               |                |
|     | (4) 1 lb                                      |                |
|     |                                               |                |
|     | (5) 0.1 m^3^ of gas                           |                |
|     |                                               |                |
|     | (6) 10 cu. ft of gas                          |                |
+-----+-----------------------------------------------+----------------+
| 7.9 | \(b\) for large delivery devices (max. rated  | **Yes** **No** |
|     | flow greater than *75* gpm)                   | **NA**         |
|     |                                               |                |
|     | (1) 10 L                                      |                |
|     |                                               |                |
|     | (2) 1 gal                                     |                |
|     |                                               |                |
|     | (3) 10 kg                                     |                |
|     |                                               |                |
|     | (4) 10 lb                                     |                |
|     |                                               |                |
|     | (5) [1 m^3^ of gas]{.underline}               |                |
|     |                                               |                |
|     | (6) [100 ft^3^ of gas]{.underline}            |                |
+-----+-----------------------------------------------+----------------+

> **Discussion/Conclusion:** During the 2002 Measuring Sector meeting,
> there was no discussion. The Sector recommends that the NCWM NTEP
> committee approve the changes shown above.

D)  **Repeatability on Milk Meters**

> During its 2002 Annual Meeting the NCWM agreed to include
> repeatability test notes and tolerances in the Handbook 44 Milk Meters
> Code as Follows:
>
> **[N.4.1.1. Repeatability Tests. -- Tests for repeatability should
> include a minimum of three consecutive test drafts of approximately
> the same size and be conducted under controlled conditions where
> variations in factors, such as temperature, pressure, and flow rate
> are reduced to the extent that they will not affect the results
> obtained.]{.underline}**
>
> **[T.3. Repeatability. - When multiple tests are conducted at
> approximately the same flow rate and draft size, the range of the test
> results for the flow rate shall not exceed 40 % of the absolute value
> of the maintenance tolerance and the results of each test shall be
> within the applicable tolerance. *See also N.4.1.1.*]{.underline}**
>
> **Recommendation:** The Sector was asked to consider adding a new
> Section K on page LMD-77 of the Checklist and Test Procedures of NCWM
> Publication 14, Measuring Devices, Chapter 2, 2002 edition and
> re-letter existing Sections K through N as follows:

K.  **[Repeatability on Milk Meters (Code Reference N.4.1.1. and
    T.3.)]{.underline}**

> [When multiple tests are conducted at approximately the same flow rate
> and draft size, the range of the test results for the flow rate shall
> not exceed 40 % of the absolute value of the maintenance tolerance and
> the results of each test shall be within the applicable
> tolerance.]{.underline}
>
> [Tests for repeatability shall include a minimum of three consecutive
> test drafts of approximately the same size and be conducted under
> controlled conditions where variations in factors, such as
> temperature, pressure, and flow rate are reduced to the extent that
> they will not affect the results obtained.]{.underline}
>
> **~~K.~~[L.]{.underline} Field Evaluation and Permanence Test For
> Turbine Meters**
>
> **~~L.~~[M.]{.underline} Permanence Tests for Mass Flow Meters**
>
> **~~M.~~[N.]{.underline} Testing of Lubricating Oil Meters**
>
> **~~N.~~[O.]{.underline} Testing of Hot Oil Meters**
>
> **Discussion/Conclusion:** During the 2002 Measuring Sector meeting,
> there was no discussion. The Sector recommends that the NCWM NTEP
> committee approve the changes shown above.

[]{#__RefHeading___Toc62281951 .anchor}2. Test Draft Size for Initial
and Permanence Test for Mass Flow Meters

**Source:** Maryland NTEP Laboratory

**Background:** At its last meeting the Sector asked the NTEP
Laboratories to review the requirement that all test drafts except a
test draft for testing Minimum Measured Quantity (MMQ), be equal to at
least the quantity that is delivered in one minute at the maximum flow
rate, and if appropriate, make recommendations for changes to be
considered by the Sector at this meeting. At the June 2002 NTEP
Laboratory Meeting, the Measuring Labs agreed that when appropriate
scales of different capacities are available, the test draft sizes at
lower flow rates do not need to equal one minute of flow at the maximum
flow rate of the device under test.

The Sector was asked to consider modifying Section L. on page LMD-78 and
LMD-79 of the Checklist and Test Procedures of NCWM Publication 14,
Measuring Devices, Chapter 2, 2002 edition as follows:

> L. Permanence Tests for Mass Flow Meters
>
> The following tests are considered to be appropriate for mass flow
> meters:
>
> **Test Drafts.** [When only one appropriate scale is available for
> gravimetric testing]{.underline} ~~Any~~ [any]{.underline} test draft
> (except a test draft for testing the MMQ) shall be equal to at least
> the quantity that is delivered in one minute at the maximum flow rate.
> [If more that one appropriate scale is available for gravimetric
> testing,]{.underline} ~~The~~ [all]{.underline} test drafts [at each
> flow rate tested]{.underline} shall be equal in quantity ~~regardless
> of~~ [and equal to at least one minutes flow at]{.underline} the
> ~~rate of flow~~ [flow rate being tested]{.underline}. Establish
> proper flowmeter calibration conditions - steady state conditions at
> each flow rate. Collect the test data for the selected flow rates. The
> indication shall be on the basis of apparent mass. A test draft for
> the test of the MMQ shall be made with a draft size equal to the MMQ
> at the marked minimum flow rate for the meter being evaluated.

**Discussion/Conclusion:** A member stated that in some cases a single
scale could be acceptable for testing with drafts of less than one
minutes flow. Multiple range scales and high resolution Class II scales
may be appropriate if the uncertainty is within stated limits. The
Sector concurred and agreed to recommend the following guidelines on
test draft sizes to the NCWM NTEP Committee for addition to Publication
14.

> **Test Drafts.** ~~Any test draft (except a test draft fro testing the
> MMQ) shall be equal to at least the quantity that is delivered in one
> minute at the maximum flow rate. The test drafts shall be equal in
> quantity regardless of the rate of flow. Establish proper flowmeter
> calibration conditions - steady state conditions at each flow rate.
> Collect the test data for the selected flow rates. The indication
> shall be on the basis of apparent mass. A test draft for the test of
> the MMQ shall be made with a draft size equal to the MMQ at the marked
> minimum flow rate for the meter being evaluated.~~ **[All test drafts
> shall meet the following criteria]{.underline}**

(a) **[The minimum quantity for any test draft shall be equal to or
    greater than the amount delivered in one minute at the flow rate
    being tested, and]{.underline}**

(b) **[any test draft shall be equal to or greater than ten times the
    division size of the available reference scale(s) divided by the
    applicable draft tolerance in percent for the device under test. As
    a formula:]{.underline}**

> **[Minimum draft size 10 (scale "d") /Applicable Draft Tolerance for
> one minutes flow]{.underline}**
>
> **[For example: With a scale division of 0.1 lb (or 1 lb with 10:1
> expanded resolution or by using error weights) and an applicable
> tolerance of 0.2 %, the minimum draft must be equal to or greater than
> 500 lb.]{.underline}**

**[With a scale division of 0.5 lb (or 5 lb with 10:1 expanded
resolution / error weights) and an applicable tolerance of 0.3 %, the
minimum draft must be equal to or greater than 1667 lb.]{.underline}**

> **Gravimetric Standard. [As a general guideline for the gravimetric
> standard, the value of the scale division should not be larger than
> one-tenth of the tolerance times the smallest test
> draft.]{.underline}** The combined error of the standard used for
> testing measuring instruments shall not exceed 20 % of the maximum
> permissible error to be applied. Using known weight (field standard),
> determine the error present in the weighing instrument over the
> weighing range that will be used in the test. The inherent error, if
> present, is to be factored out of the measurement. The scale will then
> be used as a transfer standard.

[]{#__RefHeading___Toc62281952 .anchor}3. Testing Required for an
Electronic Indicator with a CC, Interfaced with a Measuring Element with
a CC not Previously Evaluated Together

**Source:** NTEP Measuring Laboratories

**Background:** At the May 2001 NTEP Laboratory Meeting, one of the
participating laboratories asked for input regarding what testing should
be required if the manufacturer of an indicator wanted the CC to
recognize the indicator for use with different types of measuring
devices, such as PD meters, turbine meters, and mass flow meters. Dan
Reiswig (CA NTEP Laboratory) agreed to provide a draft of changes to the
Liquid-Measuring Devices Checklist and Procedures that included
requirements for indicators intended to be used with more than one
device type.

Dan Reiswig was not able to attend the September 2001 Measuring Sector
Meeting. The Sector agreed to carry this item forward to the agenda for
its next meeting. The following groups and individuals agreed to provide
input: the NTEP Measuring Laboratories, Measurement Canada, RichTucker
(Tokhiem representing GPMA), John Skuce (FMC-Smith Meter representing
MMA), Mike Keilty (Micro Motion), and David Hoffman (Toptech).

At the June 2002 NTEP Laboratory Meeting, the laboratories agreed that
an initial performance test conducted by an approved NTEP Laboratory is
required. The testing criteria applied should be the same as that
applied to a new metering system. Subsequent permanence testing should
be at the discretion of NTEP based on the initial performance and could
be conducted by a local Weights and Measures Official under the
direction and control of the NTEP evaluator performing the initial test.

Prior to the 2002 NTEP Laboratory Meeting Rich Tucker (Tokhiem
representing GPMA) submitted the following for consideration by the
labs.

> **Testing Required for an Electronic Indicator with a CC Interfaced
> with a Measuring Element with a CC not previously Evaluated
> Together.**
>
> **Significant Assumptions**
>
> The metering element has already been through NTEP so all the
> accuracy, permanence, and flow rate information has been tested and
> meets all requirements of Handbook 44.
>
> The Electronic Indicator has already been through NTEP and all
> electronic functions and other requirements have been tested and meets
> all requirements of Handbook 44.
>
> For the Dispenser, the manufacturer can only request flow rates that
> fall within the meter approval flow limits and products.
>
> With the above scenario, the only open issue is the electronic
> interface to the pulser and the electronic calculator. The electronic
> calculator receives pulses directly from the pulser. The calculator
> converts the pulses into a volume by knowing how many pulses make up a
> gallon of delivery. For an example Tokheim uses almost explicitly 1000
> pulses per gallon of delivery. This is not a standard so other
> manufacturers use other pulse counts. So the only verification is to
> make sure the manufacturer has set up the software correctly to match
> the pulser output and meter delivery.
>
> **Test**
>
> Run calibration test drafts to verify compatibility
>
> **Testing Options** (The manufacturer will, at its option, do the
> following)
>
> Have a representative from the NTEP go to a test site or the
> Manufacturers lab to verify compatibility. The manufacturer shall
> submit data from its lab testing and follow-up test data from an
> initial verification at one of the first installed sites. Data
> supplied would be a copy of the Weights and Measures calibration tests
> performed at the time the equipment is placed in service.

The Sector was asked to consider adding a new Section T to Publication
14, Technical Policy for Liquid-Measuring Devices as follows:

T.  **[Testing Required for an Electronic Indicator with a CC Interfaced
    With a Measuring Element With a CC not Previously Evaluated
    Together.]{.underline}**

> [An authorized NTEP Laboratory must conduct an initial evaluation
> following the same performance criteria required for a new device.
> Subsequent permanence testing may be at the discretion of NTEP based
> on the initial performance of the system being evaluated. Subsequent
> permanence testing if required may be performed by a local Weights and
> Measures Official under the direction and control of the NTEP Official
> performing the initial evaluation.]{.underline}

**Discussion/Conclusion:** The manufacturers represented want to keep
the amount of required testing to a minimum. Several expressed the view
that the system will either work or not work properly depending on
whether or not the indicator and the measuring element can communicate.
If the system is acceptable on an initial inspection, a permanence test
is not necessary. The only thing that may cause the system to stop
working appropriately is an electronic component failure. The NTEP
Laboratories are not comfortable with only an initial evaluation. The
Sector agreed that a work group should be formed to consider the issues
and provide a proposal for consideration prior to the Spring 2003
meeting of the NTEP Laboratories. The work group members are; Maurice
Forkert (Tuthill Transfer Systems), Mark Butler (Micro Motion), Peter
Goodier (Syltone), David Hoffman (TopTech Systems Inc.), Rodney Cooper
(Actaris Neptune), Charlene Numrych (Liquid Controls), Dave Resch (FMC
Measurement Solutions), Mike Keilty (Endress & Hauser Flowtec AG ), and
Dan Reiswig (CA NTEP Laboratory). Measurement Canada and NIST agreed to
provide input as needed.

[]{#__RefHeading___Toc62281953 .anchor}4. On Screen Display of Model and
Version Number for Software

**Source:** NTEP Measuring Laboratories

**Background:** At the May 2001 NTEP Laboratory Meeting, the
laboratories discussed marking requirements for software-based devices,
such as electronic cash registers (ECR) or control consoles connected to
liquid measuring devices. In some cases the indicator for the system is
a generic computer display. If the required markings are physically
placed on the display at the time of installation and then at some
future time the display is replaced, the required markings may be lost.
The laboratories agreed that a real time display of the model and
software version information on the display screen is preferable. The
laboratories also agreed that the information could either be displayed
continuously or by pressing a single key or a series of keys if
instructions for access are clearly provided when a series of keystrokes
is required. The laboratories agreed to develop and forward a proposal
to modify G-S.1. to allow real time display of the model and software
version number for software-based systems to the Measuring Sector for
consideration at its next meeting.

The Sector reviewed the proposal. Ted Kingsbury (Measurement Canada)
stated that Canada has a similar requirement for specifications relating
to metrological software used in software-based measurement systems. The
requirements do not apply to software in devices that are
built-for-purpose. Built-for-purpose devices are defined in the Canadian
specifications.

The Sector agreed to forward the following recommendation to the NCWM
S&T Committee for addition to NIST Handbook 44. The Sector also
forwarded a definition for "built-for-purpose device," based on the
Canadian definition to be included in the recommendation to the S&T
Committee.

The Sector recommended the following modification to Handbook 44,
Section 1.10. General Code, G-S.1:

> **G-S.1. Identification.** **- All equipment, except weights and
> separate parts necessary to the measurement process, but not having
> any metrological effect, shall be clearly and permanently marked for
> the purposes of identification with the following information:**
>
> **(a) the name, initials, or trademark of the manufacturer or
> distributor;**
>
> **(b) a model designation that positively identifies the pattern or
> design of the device;**
>
> ***(c) the model designation shall be prefaced by the term \"Model,\"
> \"Type,\" or \"Pattern.\" These terms may be followed by the term
> \"Number\" or an abbreviation of that word. The abbreviation for the
> word \"Number\" shall, as a minimum, begin with the letter \"N\"
> (e.g., No or No.).***
>
> ***\[Nonretroactive January 1, 2003\]* (Added 2000)**

***\[Note: Prefix lettering may be initial capitals, all capitals or all
lower case.\]***

> ***(d) except for equipment with no moving or electronic component
> parts, a nonrepetitive serial number;***
>
> ***\[Nonretroactive as of January 1, 1968\]***
>
> ***(e) the serial number shall be prefaced by words, an abbreviation,
> or a symbol, that clearly identifies the number as the required serial
> number; and***
>
> ***\[Nonretroactive as of January 1, 1986\]***
>
> ***(f) the serial number shall be prefaced by the words \"Serial
> Number\" or an abbreviation of that term. Abbreviations for the word
> \"Serial\" shall, as a minimum, begin with the letter \"S,\" and
> abbreviations for the word \"Number\" shall, as a minimum, begin with
> the letter \"N\" (e.g., S/N, SN, Ser. No, and S No.).***
>
> ***\[Nonretroactive as of January 1, 2001\]***
>
> The required information shall be so located that it is readily
> observable without the necessity of the disassembly of a part
> requiring the use of any means separate from the device.
>
> **[Note: For software-based devices not built-for-purpose the required
> markings may be shown on the display screen provided the required
> information is either displayed continuously or by pressing a single
> key or a series of keys. When a series of keystrokes is required
> clear, instructions for accessing the marking information must be
> provided.]{.underline}**
>
> **Definition:** [**built-for-purpose device**. **Any main element
> which was manufactured with the primary intent that it be used as, or
> as part of, a weighing or measuring device or system.**]{.underline}

At the 2002 NCWM Interim Meeting, the S&T Committee also received the
following proposal from the NTETC Weighing Sector.

> **G-S.1. Identification**. - **All equipment, except weights and
> separate parts necessary to the measurement process but not having any
> metrological effect, shall be clearly and permanently marked for the
> purposes of identification with the following information:**
>
> **[The required markings may be shown on the display screen provided
> the required information is displayed either continuously or by an
> operator action (such as keyboard entries, touch pad, etc). Clear
> instructions for accessing the information shall be provided, as a
> minimum, on the Certificate of Conformance unless the information is
> continuously displayed during normal operation.]{.underline}**
>
> **[The manufacture and model designation shall either be continuously
> displayed or permanently marked on the device.]{.underline}**
>
> **G-S.7. Lettering.** **- All required markings and instructions shall
> be distinct and easily readable and shall be of such character that
> they will not tend to become obliterated or illegible.**
>
> **[The required markings may be shown on the display screen provided
> the required information is displayed either continuously or by an
> operator action (such as keyboard entries, touch pad, etc). Clear
> instructions for accessing the information shall be provided, as a
> minimum, on the Certificate of Conformance unless the information is
> continuously displayed during normal operation.]{.underline}**

At the 2002 NCWM Annual Meeting, the S&T Committee asked that the NTETC
Weighing and Measuring Sectors review both proposals and attempt to
agree on a single proposal that is acceptable to all parties. The
Measuring Sector will review both proposals and make recommendations to
the S&T Committee for an appropriate compromise.

**Discussion/Conclusion:** At its September 2002 Meeting, the NTETC
Weighing Sector developed a new proposal based on both of the proposals
submitted last year. That proposal was forwarded to the NTETC Measuring
Sector for review and comment. The Measuring Sector reviewed the
proposal developed by the Weighing Sector and concurred with the intent
of the proposal. One member indicated that the software version number
is more important for identification purposes than a serial number. The
Measuring Sector recommended some changes to the Weighing Sector
proposal and agreed to forward it to the NCWM S&T Committee for
consideration. The modified proposal to amend G-S.1. as shown below was
also sent to the Weighing Sector members along with a ballot requesting
approval of the modifications. The results of the ballot was (9)
affirmative, (2) negative, and (3) abstain in favor of the Measuring
Sector language.

> **G-S.1. Identification.** **- All equipment, except weights and
> separate parts necessary to the measurement process but not having any
> metrological effect, shall be clearly and permanently marked for the
> purposes of identification with the following information:**
>
> **(a) the name, initials, or trademark of the manufacturer or
> distributor;**
>
> **(b) a model designation that positively identifies the pattern or
> design of the device;**

**(c) the model designation shall be prefaced by the term \"Model,\"
\"Type,\" or \"Pattern.\" These terms may be followed by the term
\"Number\" or an abbreviation of that word. The abbreviation for the
word \"Number\" shall, as a minimum, begin with the letter \"N\" (e.g.,
No or No.). The abbreviation for the word "Model" shall be "Mod" or
"Mod."**

> ***\[Nonretroactive January 1, 2003\]***
>
> **(Added 2000) (Amended 2001)**
>
> ***\[Note: Prefix lettering may be initial capitals, all capitals or
> all lower case.\]***
>
> ***(d) except for equipment with no moving or electronic component
> parts [and software-based not built‑for‑purpose devices]{.underline},
> a nonrepetitive serial number;***
>
> ***\[Nonretroactive as of January 1, 1968\]***

(**e) the serial number shall be prefaced by words, an abbreviation, or
a symbol that clearly identifies the number as the required serial
number; and**

> ***\[Nonretroactive as of January 1, 1986\]***
>
> ***(f) the serial number shall be prefaced by the words \"Serial
> Number\" or an abbreviation of that term. Abbreviations for the word
> \"Serial\" shall, as a minimum, begin with the letter \"S,\" and
> abbreviations for the word \"Number\" shall, as a minimum, begin with
> the letter \"N\" (e.g., S/N, SN, Ser. No, and S No.).***
>
> ***\[Nonretroactive as of January 1, 2001\]***
>
> ***(g) For devices that have an NTEP Certificate of Conformance (CC)
> Number or a corresponding CC addendum number, the NTEP CC shall be
> prefaced by the terms \"NTEP CC,\" \"CC,\" or \"Approval.\" These
> terms may be followed by the term \"Number\" or an abbreviation of
> that word. The abbreviation for the word \"Number\" shall, as a
> minimum, begin with the letter \"N\" (e.g., No or No.).***
>
> ***\[Nonretroactive as of January 1, 2003\]***

***The required information shall be so located that it is readily
observable without the necessity of the disassembly of a part requiring
the use of any means separate from the device.***

> **(Amended 1985, 1991, 1999 and 2000)**

Add new paragraph G-S.1.1. and renumber existing paragraph G-S.1.1. as
follows:

> ***[G-S.1.1. Software-Based, Not Built--For--Purpose
> Devices.]{.underline}* - *[For software based, not built--for--purpose
> devices, the following shall apply: ]{.underline}***
>
> ***[(a) the manufacturer or distributor and the model designation may
> be continuously displayed or marked on the device\*,
> or]{.underline}***
>
> ***[(b) the Certificate of Conformance (CC) Number may be continuously
> displayed or marked on the device\*, or]{.underline}***
>
> ***[(c) all required information in G-S.1. Identification. (a), (b),
> (c), (g), and the software version designation may be continuously
> displayed. Alternatively, a clearly identified System Identification,
> G-S.1. Identification, or Weights and Measures Identification may be
> accessible through the "Help" menu. Required information includes that
> information necessary to identify that the software in the device is
> the same type that was evaluated.]{.underline}***
>
> ***[\*Clear instructions for accessing the remaining required
> information shall be listed on the CC. Required information includes
> that information necessary to identify that the software in the device
> is the same type that was evaluated.]{.underline}***
>
> ***[\[Nonretroactive as of January 1, 200X\]]{.underline}***
>
> **G‑S.1.~~1~~[2]{.underline}. Remanufactured Devices and
> Remanufactured Main Elements. ‑ All remanufactured devices and
> remanufactured main elements shall be clearly and permanently marked
> for the purpose of identification with the following information:**
>
> ***(a) the name, initials, or trademark of the last remanufacturer or
> distributor;***
>
> ***(b) the remanufacturer\'s or distributor\'s model designation if
> different than the original model designation.***
>
> **\[Nonretroactive as of January 1, 2002\]**

Add a new definition for "built-for-purpose" devices as follows:

> **built-for-purpose device. Any main device or element which was
> manufactured with the intent that it be used as, or part of, a
> weighing or measuring device or system.**

[]{#__RefHeading___Toc62281954 .anchor}New Items

[]{#__RefHeading___Toc62281955 .anchor}5. Marking of Product Measured on
Meters in Multi-Product Dispensers

**Source:** Maryland Weights and Measures

**Background:** At the June 2002 NTEP Laboratory Meeting, one of the
participating laboratories indicated that field officials in their
jurisdiction are sometimes not able to determine which measuring element
is associated with a particular grade or blend of fuel on multi-product
dispensers. During a field examination of a multi-product dispenser one
grade or blend is rejected for not meeting performance requirements and
the official does not know which measuring element to mark or tag as
rejected. During the performance of a subsequent inspection following
adjustment or repair of the device the field official may be required to
test all grades and blends offered through the rejected dispenser to
determine that the correct measuring element and only that element was
adjusted.

The Sector was asked to consider the following proposed, developed by
Maryland weights and measures and the Technical Advisor, to modify
Handbook 44, Section 3.30. Liquid-Measuring Devices UR.2.5. as follows:

> **UR.2.5. Product ~~Storage~~ Identi­fication.**
>
> [UR.2.5.1. Measuring Element Identi­fication.]{.underline}
>
> > [(a) The measuring elements of any multi-product dispenser shall be
> > permanently, plainly, and visibly marked as to product being
> > measured.]{.underline}
>
> [(b) When the measuring elements of any multi-product is marked by
> means of a color code, the color code key shall be con­spicuou­sly
> displayed at the place of business.]{.underline}
>
> **[(Added 200X)]{.underline}**
>
> UR.2.5.[2.]{.underline} Product Storage Identi­fication.
>
> > \(a\) The fill connection for any petroleum prod­uct storage tank or
> > vessel supplying motor-fuel devices shall be permanently, plainly,
> > and visibly marked as to product contained.
>
> \(b\) When the fill connection device is marked by means of a color
> code, the color code key shall be con­spicuou­sly displayed at the place
> of business.
>
> **(Added 1975 and Amended 1976 [and renumbered 200X]{.underline})**

**Discussion:** One of the NTEP Laboratories stated that it is often
difficult to identify which meter is associated with a particular
product on dispensers with multiple measuring elements. One manufacturer
questioned why it was necessary to physically mark a meter if it has no
mechanism for adjustment and no means for a attaching a physical seal
directly to the meter. This manufacturer stated that for their equipment
it is possible to identify a particular meter in the audit trail.

**Conclusion:** The Sector modified the proposal to require a measuring
element without an individual physical seal within any multi-product
dispenser be plainly and visibly identified as to the product being
measured. The Sector agreed to forward the following proposal to the S&T
Committee through the SWMA with the recommendation that the item be
given the status of information item or developing issue.

The Sector recommended amending NIST Handbook 44, Section 3.30.
Liquid-Measuring Devices UR.2.5 as follows:

> **UR.2.5. Product ~~Storage~~ Identi­fication.**
>
> [UR.2.5.1. Measuring Element Identi­fication.]{.underline}
>
> > [(a) The measuring elements with an individual physical seal of any
> > multi-product dispenser shall be plainly and visibly identified as
> > to product being measured.]{.underline}
>
> > [(b) When the measuring elements of any multi-product dispenser is
> > marked by means of a color code, the color code key shall be
> > con­spicuou­sly displayed at the place of business.]{.underline}
>
> **[(Added 200X)]{.underline}**
>
> [UR.2.5.2. Product Storage Identi­fication.]{.underline}
>
> > \(a\) The fill connection for any petroleum prod­uct storage tank or
> > vessel supplying motor-fuel devices shall be permanently, plainly,
> > and visibly marked as to product contained.
>
> > \(b\) When the fill connection device is marked by means of a color
> > code, the color code key shall be con­spicuou­sly displayed at the
> > place of business.
>
> **(Added 1975 and Amended 1976 [and renumbered 200X]{.underline})**

[]{#__RefHeading___Toc62281956 .anchor}6. Multiple Measuring Elements
with a Single Provision for Sealing Adjustable Components

**Source:** Maryland Weights and Measures

**Background:** At the June 2002 NTEP Laboratory Meeting, one of the
participating laboratories indicated that field officials in their
jurisdiction are having difficulty with multi-product dispensers that
have only one sealing mechanism for two or more measuring elements. If
field officials reject a meter for not meeting performance requirements
they have no way of determining what measuring elements have been
recalibrated when they return to re-inspect the dispenser after a
service agency has made adjustments or repairs on the rejected device.
If a physical seal is broken or has been replaced the official must test
all products to verify that no tampering or misadjustment has occurred
on any measuring element.

The Sector was asked to consider the recommendation in agenda item 5,
developed by Maryland Weights and Measures and the Technical Advisor, to
modify Handbook 44, Section 3.30. Liquid-Measuring Devices UR.2.5.

**Discussion/Conclusion:** A manufacturer of devices that utilizes a
single security seal for the adjustment mechanism of multiple measuring
elements agreed that at present there is no way for a field official to
easily identify what element or elements have been adjusted. The
adjustment information is recorded in memory but that information is not
readily accessible through the audit trail. The Sector agreed to forward
the following proposal to the S&T Committee through the SWMA with the
recommendation that the item be given the status of information item or
developing issue.

The Sector recommended adding the following new paragraph to NIST
Handbook 44, Section 3.30. Liquid-Measuring Devices S.2.2.1. Multiple
Measuring Elements with a Single Provision for Sealing.

> **[S.2.2.1. Multiple Measuring Elements with a Single Provision for
> Sealing. - A change to the adjustment of any measuring element within
> any multi-product dispenser with a single provision for sealing
> multiple measuring elements must be identified.]{.underline}**

[]{#__RefHeading___Toc62281957 .anchor}7. Tolerance for Product
Depletion Test

**Source/Background:** At the September 2001 Measuring Sector Meeting
during the discussion of agenda item 5 comparing single compartment
testing to split compartment testing a member suggested that it would be
appropriate to have separate tolerances for a product depletion test.
The Sector agreed to discuss that as a separate agenda item if time
permitted. During further discussion of the need for specific tolerances
for a product depletion test, a member pointed out that the present
criteria is affected by the test draft size. It is possible for a meter
to fail at particular draft size; and by sufficiently increasing the
draft size for a subsequent test, the same meter could pass without any
repairs or adjustments being made. Ross Anderson (NY) indicated that
NEWMA at one point had developed a proposal to the tolerance for a
product depletion test on the rated maximum flow rate for the meter.
That proposal was not available for review. The Sector agreed to include
the discussion of a product depletion test tolerance on the agenda for
the next Sector meeting. Ross Anderson agreed to prepare a proposal for
Sector consideration at that meeting.

Since the 2001 meeting New York began a study to compare the results of
a product depletion test conducted on the same meter using different
size provers. Mr. Anderson will update the Sector on the progress of the
study and may be able to provide guidance to the Sector on how to
proceed.

**Discussion/Conclusion:** Mr. Anderson was unable to attend the Sector
meeting. The Sector did review the proposal from NEWMA to modify N.4.2.
and to add new paragraphs N.4.5. and T.5. shown below. Several Sector
members disagreed with the NEWMA proposal for a tolerance based on one
minute of flow at the maximum flow rate for the device under test. The
Sector believes that the allowable error for a product depletion test
should not be dependent on the size of the test draft. The Sector agreed
that the item should be carried over to the agenda for the next Sector
meeting to allow time for completion of the study being conducted by New
York.

**NEWMA Proposal:**

> **N.4.2. - Special Tests (except Milk Metering Systems).** "Special"
> tests shall be made to develop the operating characteristics of a
> measuring system and any special elements and accessories attached to
> or associated with the device. Any test except as set forth in N.4.1.
> or N.4.5. shall be considered a special test. Special test of a
> measuring system shall be made as follows:
>
> \(a\) at a minimum discharge rate of 20 % of the marked maximum
> discharge rate or at the minimum rate marked on the device whichever
> is less,
>
> \(b\) to develop operating characteristics of the measuring system
> ~~during a split-compartment delivery~~.
>
> (Amended 1978)
>
> [**N.4.5. Product Depletion Test -** The effectiveness of the vapor
> eliminator shall be tested by depleting the product supply and
> continuing until the lack of fluid causes the meter register to stop
> absolutely. The test shall be completed by switching to another
> compartment with sufficient product on a multi-compartment vehicle, or
> by adding sufficient product to a single compartment vehicle. When
> adding product to a single compartment vehicle, allow appropriate time
> for any entrapped vapor to disperse before continuing the
> test.]{.underline}
>
> [**T.5. Product Depletion Test** - The difference between the results
> of the normal test and the product depletion test shall not exceed 0.5
> % of the equivalent of one minute of flow at the maximum rated flow
> rate for the system.]{.underline}

[]{#__RefHeading___Toc62281958 .anchor}8. Product Family Tables for MAG
Meters

**Source:** Liquid Controls LLC

**Background:** At present, there is no product family criteria for Mag
Meters. If a manufacturer wants a CC which covers multiple products,
testing must be conducted on each product. Liquid Controls is asking the
Sector to consider the adoption of a product family of liquids criteria
for MAG Meters and will provide a specific proposal for Sector
consideration at the September 2002 Meeting.

**Discussion/Conclusion:** Liquid Controls provided a handout base on
input from an Italian mag meter manufacturer for the members to review
as a starting point for developing a product family table for mag
meters. One member stated that the performance for mag meters is very
installation dependent. Measurement Canada indicated having had
difficulty trying to categorize products. Some of the key factors
include corrosiveness, coating factors, and abrasiveness. At present
they prefer to test each product separately. The Sector agreed to form a
small work group to develop the issue, collect data, and provide input
for the next Sector meeting. Measurement Canada agreed to prepare a list
of concerns for the work group. The work group members are; Mike Keilty
(Endress & Hauser), Charlene Numrych (Liquid Controls), Paul Glowacki
(Murray Equipment), Krone America (TBD), California NTEP Laboratory
(TBD), and Measurement Canada.

[]{#__RefHeading___Toc62281959 .anchor}9. Use of Discount and Loyalty
Cards and Discounts for Actions After the Completion of a Retail
Motor-Fuel Delivery

**Source:** NTEP Laboratories

**Background:** At the June 2002 NTEP Laboratory Meeting, the
laboratories agreed that there is a need for guidance for determining
whether or not a specific discount program or application is appropriate
and meets NTEP requirements.

Examples include: The change to a discount price when a club card is
inserted and the automatic return to the nonmember price at the
completion of the delivery; a change in the posted price to include a
discount for the purchase of a car wash or other item when a credit card
is used at the pump but is not available at the pump in a post pay
situation; a discount to the unit price for the purchases of certain
items after the delivery has been completed.

The Laboratories did not have a specific recommendation, but asked the
Sector to organize a work group to identify the issues and develop
consistent guidelines and requirements for the use of various discount
programs.

**Discussion/Conclusion:** At the meeting, one of the NTEP Laboratories
provided examples of problems with the use of loyalty cards. One example
was that of a super market selling fuel where the unit price could be
discounted after the delivery was completed by purchasing one or more
specific items. The Laboratories asked if tests need to be developed for
the use of loyalty cards during type evaluation. One manufacturer stated
that marketing schemes come from device users not the device
manufacturers. The manufacturers have no control over the various types
of loyalty card programs. The Sector agreed that a work group should be
formed to develop the issue and provide input for the next Sector
meeting. The work group members are; Gary Castro (CA NTEP), Rich Tucker
(Tokheim), Mike Roach (VeriFone), Steve Covington (AutoGas Systems),
Gordon Johnson (Gilbarco), Dresser Wayne (TDB), and Mike Belue (Belue
Associates).

[]{#__RefHeading___Toc62281960 .anchor}10. Acceptable Symbols or Wording
to Identify Unit Price, Total Price, and Quantity on a Retail Motor-Fuel
Dispenser

**Source:** Maryland NTEP Laboratory

**Background:** At the June 2002 NTEP Laboratory Meeting, one of the
participating laboratories requested guidance on what are acceptable
symbols or wording to identify the unit price, total sale, and quantity
delivered on a retail motor-fuel dispenser. The Laboratories recommended
that the question be added to the 2002 Measuring Sector Agenda.

**Recommendation:** The Sector was asked to consider the following
proposal to modify to NCWM Publication 14, Chapter 2 Measuring Devices.

A.  **Add a new Paragraph 7.41.1. as follows:**

  ------ ----------------------------------------------- -----------------
  7.41   The unit price shall be expressed in dollars    Yes No NA
         and decimals of dollars using a dollar sign. A  
         common fraction shall not appear in the unit    
         price, (e.g., \$1.299 not \$1.29 9/10).         

  ------ ----------------------------------------------- -----------------

> [7.41.1. Examples of Acceptable Unit Price Identity]{.underline}
>
> [Unit Price, Price per Gallon (or Liter), \$/Gallon (or Liter), \$/Gal
> , Price/Gal (or Liter). This list is neither exclusive or all
> inclusive. NTEP may or may not approve other forms of
> identity.]{.underline}

B.  **Add a new Paragraph 7.43. as follows:**

[7.43. Examples of Acceptable Delivered Quantity Identity]{.underline}

> [Total Gallons (Liters), Total Gal, Gallons, Gal. This list is neither
> exclusive or all inclusive. NTEP may or may not approve other forms of
> identity.]{.underline}

C.  **Add a new paragraph 7.44. as follows:**

[7.44. Examples of Acceptable Total Price Identity]{.underline}

> Total Sale, Sale \$, Total \$, \$. This list is neither exclusive or
> all inclusive. NTEP may or may not approve other forms of identity.

**Discussion/Conclusion:** The Sector was unable to reach a consensus on
a list of acceptable symbols or wording to identify the unit price,
total sale, and quantity delivered on a retail motor-fuel dispenser. The
GPMA agreed to develop guidelines and provide input on this issue for
the Sector to consider. The Sector agreed to carry this item over for
the agenda of its next Sector meeting.

[]{#__RefHeading___Toc62281961 .anchor}11. NTEP Laboratory
Recommendations for Changes to NCWM Publication 14

**Source:** NTEP Laboratories

**Background:** At the June 2002 NTEP Laboratory Meeting, the
laboratories identified a need for several minor editorial changes to
Publication 14 to clarify particular sections or paragraphs.

**Recommendation:** The Sector was asked to consider the following
modifications to NCWM Publication 14 as shown in the following items:

A. Modify Section B. Tolerance Application, Normal Test on page LMD-2 as
follows:

> **B. Tolerance Application**
>
> **Normal Test Tolerances**
>
> ~~Based on Handbook 44, for~~ [For]{.underline} the purposes of
> calculating tolerances, normal tests conducted in an NTEP evaluation
> may be performed at any flow rate down to:
>
> \[50 % of the rated maximum flow rate + the rated minimum flow
> rate\]/2
>
> For example: For a meter with a rated maximum flow rate of 60
> gallons/minute (gpm) and a minimum flow rate of 12 gpm, the maximum
> discharge rate developed in an actual installation may be as low as 30
> gpm. Therefore, for NTEP tests, calculate the \"breakpoint\" between
> normal and special tests as:
>
> \[(50 % x 60) + 12\]/2 = 21
>
> Thus, in the example, NTEP test runs at flow rates between 60 and 21
> gpm are considered normal tests.

**C. Modify paragraph 5.4.2. on page LMD-21 as follows:**

> **Code Reference: S.1.5.3. Width**

4.  Width of the index of an indicator:

  ------------ ----------------------------------------------- -----------------
  5.4.1.       The width of the index shall not exceed the     **Yes** **No**
               width of [narrowest]{.underline} graduation.    **NA**
               This requirement applies to liquid measuring    
               devices [covered]{.underline} in Handbook 44    
               Section 3.30. Liquid-Measuring Devices          
               ~~(effective 2002).~~                           

  ~~5.4.1.~~   ~~The width of the index shall not exceed the   **Yes** **No**
               width of [widest]{.underline} grad uation. This **NA**
               requirement applies to liquid measuring devices 
               [not covered]{.underline} in Handbook 44        
               Section 3.30. Liquid-Measuring Devices          
               (effective 2002).~~                             
  ------------ ----------------------------------------------- -----------------

**D. Modify paragraph 7.7.2 on page LMD-24 to include examples of
rounding as follows:**

+-----+-----------------------------------------------+----------------+
| 7.7 | The indicated or recorded quantity, unit      | **Yes** **No** |
| .2. | price, and total sales price values shall be  | **NA**         |
|     | in mathematical agreement to the closest cent |                |
|     | (i.e., within each element, the values        |                |
|     | indicated or recorded must meet the formula   |                |
|     | \[quantity x unit price = total sales price\] |                |
|     | to the closest cent).                         |                |
|     |                                               |                |
|     | [Examples:]{.underline} [\$1.5549 rounds to   |                |
|     | \$1.55]{.underline}                           |                |
|     |                                               |                |
|     | [\$1.5551 rounds to \$1.56]{.underline}       |                |
|     |                                               |                |
|     | > [\$1.5550 may round to either \$1.55 or     |                |
|     | > \$1.56]{.underline}                         |                |
+-----+-----------------------------------------------+----------------+

**E. Modify the note to paragraph 16.2.5. on page LMD-36 as follows:**

+-----+-----------------------------------------------+----------------+
| 1   | Authorize with card #1 (do not turn the       | **Yes** **No** |
| 6.2 | \"handle\" on) and interrupt power for at     | **NA**         |
| .5. | least 10 seconds. This should de-authorize    |                |
|     | the dispenser.                                |                |
|     |                                               |                |
|     | Resupply power; turn the \"handle\" on; try   |                |
|     | to dispense. The dispenser shall not deliver  |                |
|     | product.                                      |                |
+-----+-----------------------------------------------+----------------+

> **Note: The term \"handle\" generically refers to the handle, flapper,
> [start]{.underline} button, on/off switch, or other mechanism used to
> activate or deactivate the dispenser.**

**F. Add a note to 16.2.6. on page LMD-35 as follows:**

+-----+-----------------------------------------------+----------------+
| 1   | Authorize with card #1; turn the \"handle\"   | **Yes** **No** |
| 6.2 | on, and then interrupt power. This should     | **NA**         |
| .6. | de-authorize the dispenser.                   |                |
|     |                                               |                |
|     | Resupply power and authorize the dispenser    |                |
|     | with card #2. Then, complete a delivery.      |                |
|     |                                               |                |
|     | Verify that the transaction is charged to     |                |
|     | card #2.                                      |                |
+-----+-----------------------------------------------+----------------+

**[Note: This test is not required if the device under test complies
with paragraph 16.1.]{.underline}**

**Discussion/Conclusion:** The Sector supported the changes suggested by
the NTEP Laboratories recommends that the NCWM NTEP committee approve
the changes shown above.

During the discussion of the above changes a member noted that the
tolerances shown in Section I on page LMD-77 of Publication 14 also need
to be updated to be consistent with Handbook 44. The Sector agreed and
recommended that the tolerances be changed to 1.0 % of the test draft
for mechanical automatic temperature compensating systems; and 0.5 % of
the test draft for electronic automatic temperature compensating
systems.

[]{#__RefHeading___Toc62281962 .anchor}12. Definition for Cryogenic
Liquid-Measuring Device

**Source:** NIST/OWM

**Background:** In 1986 paragraph A.1. of Section 3.34. Cryogenic
Liquid-Measuring Device and the definition for cryogenic
liquid-measuring devices were modified to include on-board-weighing
systems for measuring cryogenic liquid. In 1995 the reference to scales
for measuring cryogenic liquids was removed from paragraph A.1., but not
from the definition for cryogenic liquid-measuring device.

The Sector was asked to review the following proposal to modify the
following NIST Handbook 44 definition for cryogenic liquid-measuring
device and if acceptable, forward it to the S&T Committee for
consideration.

> **cryogenic liquid‑measuring device.** A system including a
> ~~mechanism or machine of (a) the~~ meter [of the positive
> displacement, turbine,]{.underline} or mass flow type~~, or (b) a
> weighing type of device mounted on a vehicle,~~ designed to measure
> and deliver cryogenic liquids in the liquid state. Means may be
> provided to indicate automatically, for one of a series of unit
> prices, the total money value of the liquid measured.\[3.34\]
>
> (Amended 1986[, 200X]{.underline})

**Discussion/Conclusion:** During the meeting a member recommended that
"meter of the positive displacement, turbine, or mass flow type" be
changed to "liquid measuring element" to recognize other measurement
technologies. The Sector concurred and agreed that the following
proposal be forwarded to the NCWM S&T Committee for consideration.

The Sector recommends modifying the NIST Handbook 44 definition for
cryogenic liquid-measuring device as follows:

> **cryogenic liquid‑measuring device.** A system including a [liquid
> measuring element]{.underline} ~~mechanism or machine of (a) the~~
> ~~meter [of the positive displacement, turbine,]{.underline} or mass
> flow type, or (b) a weighing type of device mounted on a vehicle,~~
> designed to measure and deliver cryogenic liquids in the liquid state.
> Means may be provided to indicate automatically, for one of a series
> of unit prices, the total money value of the liquid measured.\[3.34\]
>
> (Amended 1986[, 200X]{.underline})

[]{#__RefHeading___Toc62281963 .anchor}13. Next Meeting

The Sector discussed the time and location for its next meeting.

**Discussion/Conclusion:** The Sector recommended that the next meeting
of the NTETC Measuring Sector be scheduled for October 3-4, 2003 at the
Hyatt Charlotte in Charlotte, NC immediately prior to the next Southern
Weights and Measures Association Annual Meeting.

[]{#__RefHeading___Toc62281964 .anchor}Additional Item

[]{#__RefHeading___Toc62281965 .anchor}14. Update LMD Section of
Publication 14

During the meeting a member stated that the entire LMD Section of
Publication 14 should be reviewed, updated, and reorganized as
necessary. When conducting evaluations of some devices it is necessary
to look in several places to find all the requirements that may apply.
The Sector concurred and agreed to add it to the agenda for the next
Sector Meeting.

  ------------ ---------------- ----------------------- ----------- ---------------------------------------------------------------------
  Name         Company/Agency   Address                 Telephone   E-Mail Address
                                                        \#          

                                                                    

  Alain        Measurement      Stds Bldg #4 Tunney's   613 952     <Casademont.alain@ic.gc.ca>
  Casademont   Canada           Pasture -- Ottawa       0636        
                                Ontario K1A0C9                      

  Charlene     Liquid Controls  105 Albrecht Dr - Lake  847 283     <cnumrych@idexcorp.com>
  Numrych                       Bluff IL 60044          8330        

  David        Toptech Systems  280 Hunt Park Cove -    407 332     <dhoffman@toptech.com>
  Hoffman                       Longwood FL 32750       1774        

  David Resch  FMC Measurement  1602 Wagner Ave, Box    814 898     <Dave.resch@fmcti.com>
               Solutions        10428 -- Erie, PA 16514 5214        

  Douglas Long RDM Industrial   850 Harmony Grove Rd -- 828 652     <doug@wnclink.com>
               Electronics      Nebo, NC 28761          8346        

  Gary Castro  State of         8500 Fruitridge Rd -    916 229     <gcastro@cdfa.ca.gov>
               California Meas  Sacramento CA 95826     3026        
               Stds                                                 

  Gordon       Marconi Commerce 7300 W Friendly Ave --  336 547     <gordon.johnson@marconi.com>
  Johnson      Systems Inc      Greensboro NC 27420     5375        

  John Skuce   FMC - Smith      1602 Wagner Ave Box     814 898     <john.skuce@fmcti.com>
               Meter            10428 - Erie PA 16514   5405        

  Mark Butler  Micro Motion     7070 Winchester         303 530     <mark.butler@emersonProcess.com>
                                Circle - Boulder CO     8231        
                                80301                               

  Maurice      Tuthill Transfer 8825 Aviation Dr - Ft   219 747     <mforkert@Tuthill.com>
  Forkert      Systems          Wayne IN 46809          7529        

  Mike Belue   Belue Associates 1319 Knight Dr -        615 867     <bassoc@aol.com>
                                Murfreesboro TN 37128   1010        

  Mike Keilty  Endress & Hauser 2350 Endress Place -    317 535     [michael.keilty@us,endress.com](mailto:james.walker@us,endress.com)
               Flowtec AG       Greenwood IN 46143      2745        

  Mike Roach   VeriFone         4011 Barwood Court --   813 205     <Mike_r4@verifone.com>
                                Tampa, FL 33624         0876        

  Paul         Murray           2515 Charleston Place   260 484     <pglowacki@murrayequipment.com>
  Glowacki     Equipment, Inc.  -- Fort Wayne, IN 46808 0382        

  Peter        Syltone          2501 Constant Comment   502 266     <pgoodier@Syltone.com>
  Goodier      Industries Inc.  Place -- Louisville, KY 6677        
                                40299                               

  Randy Byrtus Measurement      Stds Bldg Tunney\'s                 <byrtus.randy@ic.gc.ca>
               Canada           Pasture -- Ottawa                   
                                Ontario K1A OC9                     

  Rich Tucker  Tokheim          P.O. Box 360 - Ft Wayne 260 470     <Richard.Tucker@Tokheim.com>
                                IN 46801                4610        

  Richard      State of         50 Harry S. Truman      410 841     <wotthlrw@mda.state.md.us>
  Wotthlie     Maryland         Parkway - Annapolis MD  5790        
                                21771                               

  Richard C.   NIST/OWM         Stop 2350 100 Bureau    301 975     <rsuiter@nist.gov>
  Suiter                        Dr - Gaithersburg MD    4406        
                                20878                               

  Rodney       Schlumberger     1310 Emerald Rd -       864 942     <rcooper@greenwood.rms.slb.com>
  Cooper       Neptune          Greenwood SC 29646      2226        

  Steve        NTEP/NCWM        1239 Carolina Dr -      828 859     <spatoray@mgmtsol.com>
  Patoray                       Tryon NC 28782          6178        

  Steve        AutoGas Systems, 1000 N. Walnut Suite    830 620     <Steve_Covington@autogas.com>
  Covington    Inc.             201 -- New Braunfels,   6252        
                                TX 71830                            

  Steven Cook  NIST/OWM         Stop 2350 100 Bureau    301 975     <steven.cook@nist.gov>
                                Dr - Gaithersburg MD    4003        
                                20878                               

  Ted          Measurement      Stds Bldg Tunney\'s     613 941     <kingsbury.ted@ic.gc.ca>
  Kingsbury    Canada           Pasture -- Ottawa       8919        
                                Ontario K1A OC9                     

  Trevor       Syltone          2501 Constant Comment   502 266     <tjpoulter@syltone.com.uk>
  Poulter      Industries Inc.  Place -- Louisville, KY 6677        
                                40299                               

  William D.   State of Ohio    8995 E Main St -        614 728     <west@odant.agri.state.oh.us>
  West         Dept of          Reynoldsburg OH 43068   6290        
               Agriculture                                          
  ------------ ---------------- ----------------------- ----------- ---------------------------------------------------------------------

# Appendix F

## National Type Evaluation Technical Committee

## Weighing Sector Annual Meeting

**September 29 to October 1, 2002, Annapolis, MD**

**Final Summary**

[Carry-Over Items 2](#__RefHeading___Toc62283042)

[1. CLC on Livestock Scales 2](#__RefHeading___Toc62283043)

[2. NCWM Publication 14, Technical Policy E, Modification of Type -
Conversion of a Vehicle Scale to a Livestock Scale
3](#__RefHeading___Toc62283044)

[3. T.7.3.1. Power Supply, Voltage, and Frequency Tests for Automatic
Weighing Systems (AWS) 6](#__RefHeading___Toc62283045)

[4. Listing of Device Types (Families of Scales with Capacities Above
and Below 30 000 lb) 7](#__RefHeading___Toc62283046)

[5. Scope of the Certificate of Conformance
8](#__RefHeading___Toc62283047)

[6. Policy for Initial Test Only vs. Full Evaluation when a Modification
is Made which Requires Testing 9](#__RefHeading___Toc62283048)

[7. NCWM Publication 14 Administrative Procedures -- Conformity
Assessment 9](#__RefHeading___Toc62283049)

[8. Multiple Load-Receiving Elements Attached To One Indicator
10](#__RefHeading___Toc62283050)

[9. G-S.1. Identification, and Table S.6.3. Markings; Software Based
Built-for-Purpose Devices 12](#__RefHeading___Toc62283051)

[10. Zero and Tare on a Single Indicating Element Interfaced with
Multiple Platforms 15](#__RefHeading___Toc62283052)

[11. Screen Savers on Electronic Cash Registers and Point-of-Sale
Systems (ECR/POS) 15](#__RefHeading___Toc62283053)

[12. NTEP Evaluations and User Requirements in the Scales Code
20](#__RefHeading___Toc62283055)

[13. NTEP Technical Policy Publication 14 Section B.5.b. Change Platform
Area to Length and Width 20](#__RefHeading___Toc62283056)

[New Items 21](#__RefHeading___Toc62283057)

[14. Publication 14 Changes to Reflect NCWM Changes to Handbook 44, 2003
Edition 21](#__RefHeading___Toc62283058)

[15. Publication 14, Incorporation of OIML R 60 with Exceptions
24](#__RefHeading___Toc62283059)

[16. Vehicle Scale Testing Procedures 25](#__RefHeading___Toc62283060)

[17. Publication 14, Section 7, Footnote 1 on DES-3
27](#__RefHeading___Toc62283061)

[18. Define Bench/Counter Scales 28](#__RefHeading___Toc62283062)

[19. Definitions of Hanging and Crane Scales
31](#__RefHeading___Toc62283063)

[20. List of Acceptable Abbreviations and Symbols
32](#__RefHeading___Toc62283064)

[22. Manual Multi-Interval Scale 33](#__RefHeading___Toc62283065)

[23. Inconsistent Information on a CC 34](#__RefHeading___Toc62283066)

[25. Audit Trail Information During Power Failure
36](#__RefHeading___Toc62283067)

[26. Performance and Permanence Testing 37](#__RefHeading___Toc62283068)

[27. Center Dump Option on Vehicle Scales
37](#__RefHeading___Toc62283069)

[28. ECR Loyalty Programs 40](#__RefHeading___Toc62283070)

[29. Range of IZSM on Indicating Elements
42](#__RefHeading___Toc62283071)

[30. IZSM Test Procedures 43](#__RefHeading___Toc62283072)

[31. Weight Accumulators 46](#__RefHeading___Toc62283073)

[32. Last Item: Tentative Date and Location of Next Meeting
47](#__RefHeading___Toc62283074)

Reference Item Attachment Description

Attachment to Item 1 Scale Manufacturers Association Letter dated
September 20, 2002

Attachment to Item 16 Proposals for Vehicle Scale Test Procedures

[]{#__RefHeading___Toc62283042 .anchor}Carry-Over Items

[]{#__RefHeading___Toc62283043 .anchor}1. CLC on Livestock Scales

**Background:** For additional background information, refer to the
October 2001 Weighing Sector Summary Agenda Item and the Report of the
77^th^ Annual Meeting of the National Conference on Weights and Measures
(NCWM), Specifications and Tolerances Committee (S&T) Agenda Item
320-1B. As a result of the vote of the NCWM, the item was been returned
to the S&T Committee and the Weighing Sector for additional development.

The Sector should make a recommendation to the NCWM S&T Committee that
the proposed amendment to the CLC definition be treated as a separate
agenda item. The Sector may also want to consider reducing the amount of
test load prescribed in proposed paragraph N.1.3.4.2. to approximately
500 d. This number has been selected because it complies with the
minimum load requirements in paragraph UR.3.8. Minimum Load for Weighing
Livestock, test loads can be safely applied to the scale, and the
minimum test load is an adequate test load to verify that individual
load bearing points are accurately adjusted. The NIST Technical advisor
suggested the following language for consideration by the Sector:

> [N.1.3.4.2. Prescribed Test Pattern and Test Loads for Livestock
> Scales with More Than Two Sections and Combination Vehicle/Livestock
> Scales. A minimum test load of 5000 kg (10 000 lb) or one-half of the
> rated section capacity, whichever is less, shall be placed, as nearly
> as possible, successively over each main load support as shown in the
> diagram below. For livestock scales manufactured between January 1,
> 1989, and January 1, 2003, the required loading shall be no greater
> than one-half CLC. (Two-section livestock scales shall be tested
> consistent with N.1.3.8.)]{.underline}

**Discussion:** At its 2002 meeting, the Weighing Sector supported the
recommendation that the definition for concentrated load capacity (CLC)
be considered as a separate agenda item from the proposals for
paragraphs N.1.3.4., N.1.3.4.1., N.1.3.4.2., and N.1.3.8.

The Sector also discussed the proper test patterns and test loads
described in Handbook 44 Scales Code paragraph N.1.3.4.2. Prescribed
Test Pattern and Test Loads for Livestock Scales with More Than Two
Sections and Combination Vehicle/Livestock Scales. The Sector considered
the Central Weights and Measures Association recommendation that the
shift test load be 12.5 % of scale capacity, but no more than ½ section
capacity, to be an adequate test of a main load support. The NIST
Technical Advisor recommended that a minimum test load of 10 000 lb be
specified to facilitate the safe application of test weights while
applying a load that more closely simulates the potential concentration
of livestock in the corner of the scale. The Sector noted that a test
load of 12.5 % of scale capacity that does not exceed the ½ section
capacity is an appropriate test of the performance of the load support
and also addresses the safety concerns associated with stacking weights.
Public sector members expressed concerns that the test load changes to
N.1.3.4.2. should include language that allows the field official or an
NTEP evaluator to apply test loads for load supports of up to ½ section
capacity.

The Scale Manufacturers Association (SMA) distributed a letter dated
September 20, 2002 documenting their concerns on S&T Agenda Item 320-5.
The letter stated that the test loads were too large; the test patterns
were undefined; and that the shift test pattern for livestock scales be
simply defined as it was prior to 1988:

N.1.3.4.2. Livestock Scales With More Than Two Sections. - A shift test
equal to one-half the rated sectional capacity shall be conducted with
test loads distributed over each section of the scale. (Two section
livestock scales shall be tested consistent with N.1.3.8.)

The Weighing Sector discussed the SMA proposal and continues to believe
that testing which includes test loads positioned over the main load
supports more accurately reflects the actual usage of livestock scales.

One of the private sector members noted that the test loads can not be
centered over the main load bearing point and suggested adding lines to
the diagram for paragraph N.1.3.4.2. similar to the lines in the diagram
for paragraph N.1.3.8. (a) All Other Scales Except Crane Scales, Hanging
Scales, Hopper Scales, Wheel-Load Weighers, and Portable Axle‑Load
Weighers.

**Conclusion:** At its 2002 meeting, the Weighing Sector agreed to
support a separate proposal making the definition for concentrated load
capacity a separate agenda item from the item to establish test patterns
and test loads for livestock scales. The Weighing Sector agreed with the
Central Weights and Measures Association recommendation that a test load
of 12.5 % of scale capacity, not to exceed one-half section capacity is
an adequate test of a main load support. The Sector noted that a test
load of 12.5 % of scale capacity addresses safety concerns when stacking
weights however those test loads are excessive should not be required
for subsequent tests. The Weighing Sector proposes an alternate new
paragraph N.1.3.4.2. and associated diagram shown in the recommendation
above that specifies a minimum test load of 10 000 lb to facilitate the
safe application of test weights while applying a load that more closely
simulates the potential concentration of livestock in the corner of the
scale. The language is also intended to permit weights and measures
officials and NTEP laboratories to conduct a shift test of up to 12.5 %
of scale capacity.

> [N.1.3.4.2. Prescribed Test Pattern and Test Loads for Livestock
> Scales with More Than Two Sections and Combination Vehicle/Livestock
> Scales. A minimum test load of 5000 kg (10 000 lb) or one-half of the
> rated section capacity, whichever is less, shall be placed, as nearly
> as possible, successively over each main load support as shown in the
> diagram below. For livestock scales manufactured between January 1,
> 1989, and January 1, 2003, the required loading shall be no greater
> than one-half CLC. (Two-section livestock scales shall be tested
> consistent with N.1.3.8.)]{.underline}

[]{#__RefHeading___Toc62283044 .anchor}2. NCWM Publication 14, Technical
Policy E, Modification of Type - Conversion of a Vehicle Scale to a
Livestock Scale

**Background:** See the 2001 NTETC-Weighing Sector Final Summary, agenda
item 4, for additional background information.

NCWM Publication 14, Technical Policy E, Modification of Type, -
Conversion of a Vehicle Scale to a Livestock Scale (including vehicle
scales used to weigh livestock or combination vehicle/livestock scales)
requires the device manufacturer to request on the NTEP application that
a Certificate of Conformance (CC) cover both a vehicle and livestock
scale application. The evaluation must include an NTEP test of the
livestock scale if this is a new application. To include the livestock
application on an existing CC, NTEP requires at least a "one time" test
to 90 % of the CLC rating.

The Sector acknowledges that the S&T Committee reviewed an item that
removes the CLC marking requirements and includes section capacity
markings for livestock scales. The proposal to remove livestock scales
from CLC marking requirements was adopted by the NCWM at its 2002 Annual
Meeting. As a result, a vehicle scale used for weighing livestock would
also be required to have a section capacity marking, and a livestock
scale used to weigh vehicles would also have to have a CLC marking.

This subject was also discussed at the NTEP Participating Laboratories
2002 meeting in Albany, New York. It was determined that a consistent
policy is needed, not only for vehicle scales used to weigh livestock,
but also platform scales used to weigh single animals and railroad track
scales used to weigh highway vehicles. Combination vehicle/axle load
scales will not be evaluated because axle scales can't be used to
determine legal-for-trade axle weights (unless the vehicle is weighed as
a single draft) or are Accuracy Class IIII devices.

Steve Patoray, NTEP Director, suggested an approach used for vehicle
scale deck types be considered as a possible solution. An applicant
requesting multiple "use applications" at the time an evaluation is
requested would have the choice of two separate evaluations or a
combined evaluation. If two separate evaluations were the preferred
option, the second evaluation would only consist of an initial
evaluation and an applicable follow-up test from NIST Handbook 112 to
verify the device is still working correctly after 21-days and that the
minimum use requirements have been met. Additionally, the sentence "Only
loads which have been applied using a method representative of the
scales intended use can be counted." needs to be changed, e.g., dynamic
vs. static load, vehicle vs. livestock, railroad cars vs. vehicles,
animals vs. pallet load applied by forklift or overhead crane.

At their 2002 meeting, the Sector, considered the following
[underlined]{.underline} amendments developed by the participating
laboratories at their 2002 meeting in Albany, NY.

> Section 62. Performance and Permanence Tests for Counter (Bench)
> Scales (including Computing Scales)
>
> 61.11.2. Only [static]{.underline} loads which have been applied using
> a method representative of the scales intended use can be counted.
>
> Section 63. Performance and Permanence Tests for Floor Scales

3.  Only [pallet or container]{.underline} loads~~,~~ which have been
    applied using a method representative of the scales intended
    use~~,~~ can be counted.

> Section 64. Performance and Permanence Tests for Livestock Scales
>
> 64.32. Only loads [of livestock]{.underline} which have been applied
> using a method representative of the scales intended use, can be
> counted.
>
> Section 65(x) Performance and Permanence Tests for (X) Vehicle Scales
> and Permanently-Installed Axle‑Load Load-receiving elements
>
> 65(x).7.2. Only [static]{.underline} loads~~,~~ which have been
> applied using a method representative of the scales intended use~~,~~
> can be counted.
>
> Section 67. Performance and Permanence Tests for Railway Track Scales
> Used to Weigh In-Motion

Permanence Tests - Note: There are no minimum use requirements.

> Section 68. Performance and Permanence Tests for railway Track Scales
> Used to Weigh Statically
>
> Permanence Tests - Note: There are no minimum use requirements.
>
> Section 69. Performance and Permanence Tests for Dynamic Monorail
> Scales
>
> Permanence Testing:
>
> During the permanence period, the system will be run with the
> following:
>
> [Only livestock carcasses, which have been applied using a method
> representative of the scales intended use, can be
> counted.]{.underline}
>
> At least 100 % of the loads must be above 20 % capacity of the device
> capacity.
>
> At least 50 % of the loads must be above 50 % of device capacity.

Discussion: Some of the public sector members expressed continued
concern about the differences in the way loads of livestock are placed
on vehicle scales. The forces induced by highway vehicles are typically
along the length of the scale and that vehicle scales are appropriately
designed for the weight and direction of these forces. The forces
induced by livestock on vehicle scales are in all directions and it
can't be assumed that all vehicle scale designs can continue to perform
within tolerance over an extended period of time due to the effect of
the direction and violent movement of livestock. A public sector member
cited an example of a vehicle scale that was used in an installation
where vehicles were making short turns off the end of the scale and that
the scale failed to maintain tolerances. The service agent added a
side-to-side checking system designed for vehicle scales used to weigh
livestock in order to maintain scale calibration. Another comment
indicated that the addition of stock racks and/or concrete barriers as
part of the stock racks may be of sufficient weight and location to
cause a detrimental effect on the performance of the scale. One of the
public sector members also indicated a preference for the compromise
test policy and procedures developed by the NTEP Participating
Laboratories at their meeting in June 2002 (see background information
above).

The Scale Manufacturers Association technical committee disagrees with
the positions in the previous paragraph and responded with the following
comments as part of a letter to the NCWM S&T Committee dated September
20, 2002:

1.  The movement of a vehicle on the scale deck causes the deck to move
    in an elliptical pattern, which is why all vehicle scales limit
    transverse as well as longitudinal movement. The recent use of
    "rocker" type load cells drives this point home. These cells will
    rotate because of the elliptical deck movement and if rotation is
    not controlled by design, the cell cable will wind around the cell
    and break. To conclude that vehicle scales are not checked for
    transverse movement is simply not factual and to conclude that scale
    movement created by moving livestock is more abusive to a vehicle
    scale than the movement of a vehicle is technically incorrect.

2.  The load capacity of an average vehicle scale section is 100 000
    pounds (50 000 pound capacity load cells). Assuming a 4-section
    concrete deck scale, the dead load on each section will be in the
    area of 9 000 pounds and the live load on each section at maximum
    rated capacity will be less than 50 000 pounds. Total load on the
    section is 59 000 pounds or only 59 % of section capacity. The
    addition of racks and gates to the scale adds an additional 4500 to
    5000 pounds at most and is well within scale design limits. These
    modifications are subject to Handbook 44 UR.2.7, UR.4.1., and
    UR.4.3., and are usually approved by the manufacturers of the scale.
    In addition, because the live load uses such a small portion of the
    total output of each load cell, an increase in dead load will not
    change the linearity of the device.

3.  A legal highway truck can have a gross weight of 80 000 pounds. For
    the sake of this discussion, assume a maximum gross weight of 60 000
    pounds. Also assume an average vehicle scale size of 70 feet x 10
    feet (700 square feet). The average speed for a vehicle entering
    onto a vehicle scale load receiver is between 3 and 5 mph. The load
    receiver is at rest when the front axle of the vehicle first touches
    the load receiver causing the load receiver to move in the direction
    of the truck movement. The average 70 foot x 10 foot concrete deck
    load receiver weighs about 35 000 pounds so the dynamic forces of
    the load receiver moving from rest is severe. When the truck stops
    on the load receiver, the inertial force created by stopping the
    moving 60 000-pound load causes an equal force on the load receiver.
    The same dynamics take place when the vehicle begins to accelerate
    to leave the scale. By loading the same 700 square feet of load
    receiver with cattle the average maximum load would be 77 000
    pounds. The cattle enter the load receiver, not as a single
    77 000‑pound mass like a vehicle; but rather randomly until the load
    receiver has no space for more. Loaded to 110 pounds per square
    foot, the cattle cannot move at all. To reduce the load of cattle to
    60 000 pounds (same as vehicle) the square footage they would occupy
    gathered together would be 545 square feet allowing 155 square feet
    of open area in which to move freely. For these cattle to even
    simulate the dynamics of the vehicle the entire herd would have to
    move as one single mass coming onto the scale and leaving the scale
    in like manner. Experience dictates this is not likely. What if an
    individual animal ran from side-to-side or attempted to get off the
    scale by climbing the stock racks? An average head of commercial
    beef cattle weighs less than 1300 pounds and certainly cannot create
    dynamic forces that come close to the vehicle scale design limits.

Ross Andersen, New York, strongly believes that vehicle scales can be
used with livestock without additional evaluation. It is a platform that
weighs.

The NIST Technical Advisor and one of the private sector members noted
that the results of testing for permanence using livestock to meet the
minimum use requirements might not be repeatable from one evaluation to
another. One location may be at a feedlot with passive livestock, where
another location might be a livestock receiving and slaughtering
facility with very active livestock. It was also noted that it is
frequently difficult for an applicant to find a test site that will
permit an interruption to their operation to conduct type evaluation
testing.

Conclusion: The Sector agreed that there may be differences in test
procedures between livestock scales and vehicle scales pending the
action of the NCWM at its 2003 Annual Meeting on the proposed new
paragraph 2.20. Scales Code paragraph N.1.3.4.2. Prescribed Test Pattern
and Test Loads for Livestock Scales With More Than Two Sections. If the
item is adopted by the NCWM, NTEP may be able to justify different type
evaluation procedures between livestock and vehicle scales based upon
the different test procedures in Handbook 44. Additionally, there will
be Handbook 44 justification to establish NTEP technical policies for
adding an option for weighing livestock to new and existing vehicle
scale certificates, and adding an option for weighing vehicles to new
and existing livestock scale certificates.

The Sector did not come to a conclusion on the language recommended by
the participating laboratories at their 2002 meeting in Albany, NY.
Additionally, the Sector could not reach a consensus on whether
livestock shall be used as the loads necessary to meet permanence test
minimum use requirements, or if static loads such as vehicles, lift
trucks, pallets, etc. can be used to meet minimum use requirements.

The Sector Chairman requested a vote. The Sector voted against
"requiring livestock be used to meet minimum use requirements for
permanence testing" (4 in favor, 10 opposed). Depending on the actions
of the NCWM Board of Directors and NTEP Committee, this item will be
carried over to the 2003 Weighing Sector.

[]{#__RefHeading___Toc62283045 .anchor}3. T.7.3.1. Power Supply,
Voltage, and Frequency Tests for Automatic Weighing Systems (AWS)

**Source:** Maryland NTEP Laboratory and NIST Weights and Measures
Division (formerly OWM)

**Background:** This item was resolved with recommended language for
voltage testing that was incorporated into Publication 14. The NTEP
Participating Laboratories were to discuss the reasoning for not
conducting frequency variation tests at their 2002 NTEP Participating
Laboratory meeting.

This item was not discussed at the 2002 NTEP Participating Laboratory
meeting. Scale Code paragraph T.N.8.3.1. Power Supply, Voltage, and
Frequency includes language similar to the AWS Code and has never been
included as part of the influence testing required in Publication 14.

**Discussion:** The NTETC Weighing Sector reviewed the Canadian and OIML
voltage requirements. In the Canadian requirements for maximum and
minimum specified voltage, devices may be marked with a nominal voltage
of 117 V or 225 V or other voltage. When a device is marked with a
voltage range the midpoint is taken as the nominal voltage. The device
is tested at --15 % and +10 % of the marked nominal voltage. Devices
marked with a range are tested to the *greater* of --15 % and +10 % of
the midpoint nominal voltage or the maximum and minimum marked voltage
range values. OIML R 76-1, Nonautomatic Weighing Instruments, Part 1:
Metrological and Technical Requirements -- Tests (Edition 1992 E)
requires test of the device at --15 % of the maximum marked voltage and
+10 % of the minimum marked voltage.

There was also discussion of test requirements for compliance with line
frequency variations. Several of the manufacturers indicated that there
is no need to do this with today's power supplies built into the scales.
The devices can easily meet performance requirement with the narrow
range of line frequency variation specified in Handbook 44 and OIML R
76. The manufacturers state that the tests for compliance with line
frequency variations are not conducted during OIML R 76 evaluations. The
Sector noted that similar requirements and language are also in Handbook
44 codes for Automatic Weighing Systems and Near-Infrared Grain
Analyzers.

**Conclusion:** The Weighing Sector recommended that a proposal to
modify paragraph T.N.8.3.1.(a) that require tests over the marked
voltage range rather than a specified voltage range be developed.
Performance tests would be conducted at the device's marked maximum
voltage, minimum voltage, and nominal voltage (voltage value at the
midpoint of the range).

NTEP does not test for a change in line frequency of 0.5 Hz because the
test equipment is very expensive. The Sector agreed to recommend
continuing the existing policy and consistently apply the same policy to
other devices covered by NCWM Publication 14.

The NIST Technical Advisor developed and submitted the following
language to the Southern Weights and Measures Association (SWMA)
Specifications and Tolerance Committee for consideration at their 2002
Annual Conference. The language is based on OIML R 76 recommendations
and test procedures to modify paragraph T.N.8.3.1.(a) as follows:

> T.N.8.3.1.(a) Power Supply, Voltage and Frequency.
>
> \(a\) Weighing devices that operate using alternating current must
> perform within the conditions defined in paragraphs T.N. 3. through T.
> N. 7., inclusive, over the line voltage range [as marked]{.underline}
> ~~of 100 V to 130 V or 200 V to 250 V rms as appropriate, and over the
> frequency range of 59.5 Hz to~~ [at]{.underline} 60~~.5~~ Hz.
>
> *NIST Technical Advisor note: At their 2002 Annual Meeting, the SWMA
> recommended alternative changes to paragraph T.N.8.3.1.(a) as
> follows:*
>
> *T.N.8.3.1.(a) Power Supply, Voltage and Frequency.*

(a) Weighing devices that operate [from a main power supply must perform
    within the conditions defined in paragraphs T.N.3. through T.N.7.,
    inclusive if the power supply varies in voltage from -- 15 % to + 10
    % of the value marked on the device. If a range of voltage is
    marked, the device shall operate within the conditions defined in
    paragraphs T.N.3. through T.N. 7., inclusive at a voltage of + 10 %
    of the maximum voltage marked on the device and at a voltage of --15
    % of the minimum voltage marked on the device]{.underline} ~~using
    alternating current must perform within the conditions defined in
    paragraphs T.N.3. through T.N.7., inclusive, over the line voltage
    range of 100 V to 130 V or 200 V to 250 V rms as appropriate, and
    over the frequency range of 59.5 Hz to 60.5 Hz~~.

[]{#__RefHeading___Toc62283046 .anchor}4. Listing of Device Types
(Families of Scales with Capacities Above and Below 30 000 lb)

**Source:** 2001 Carryover Item 8a

**Background:** At the 2001 NTEP Participating Laboratories meeting, the
Participating Labs and the NIST Technical Advisor were assigned to
create an outline of device types based upon accuracy class, special use
(e.g., vehicle, livestock, etc.), and physical design. Refer to
Attachment to Item 4 for a complete draft copy of the outline.

The NIST Technical Advisor and the Participating Labs have made no
progress on this item**.**

**Discussion:** The Sector considered if further development of the
outline format is necessary. The Sector noted that one of the concerns
has come from the fact that more than 10 types of flat platform scales
can be considered as a bench scales in Handbook 44. Additionally, there
are several different types of references to vehicle scales, and
livestock scales on NTEP Certificates of Conformance (CC) (e.g.
livestock or vehicle scales, load-receiving elements, weighing elements,
and weighing/load-receiving elements). One of the consequences of the
inconsistency of the terminology is trying to search for CCs by device
type on the Internet. Some devices and their manufacturers are not
listed in queries because of variations in wording.

Several manufacturers are in favor of limiting device types to Handbook
44 Accuracy Class designations with suitability determined by factors
such as capacity, minimum interval, minimum use, size and conditions of
the installation. For example, a Class III hanging scale can be used in
place of a Class III bench scale (if both are suitable for the
installation).

Many regulators prefer that Handbook 44 device types continue to be
"application driven" rather than "Accuracy Class" driven. They are
concerned that scale purchasers assume a scale is suitable for an
application, without considering division size, typical usage and etc.,
if it has an NTEP CC. Purchasers may verify that a scale has a CC (e.g.
on the internet) and buy a scale that is unsuitable for the application.
This makes it difficult for regulators to reject a scale on suitability
requirements after it has been purchased and installed.

One of the participating laboratories indicated that there is
inconsistent language used in the certificates and suggested that the
idea of templates and "drop down menu selections for device types" be
further developed.

There was also a suggestion that the NTEP database be upgraded to
include word search capability in order to obtain a more comprehensive
list of device type and help the regulator find certificates by "device
type." The NTEP Director agreed that a "keyword search" is useful on
occasion, but stated that there would be costs involved and added that
there would have to be an increased interest of this feature to justify
the costs.

**Conclusion:** The Sector recommends that the NTEP Board of Directors
consider adding a "keyword search" capability to the NTEP CC database.
The Sector also agreed that Handbook 44 has an excessive number of
device types in the Scale Code and that the list of device types could
be shortened and used consistently by the participating laboratories and
in Handbook 44. The NIST Technical Advisor mailed the list of device
types submitted in the 2001 Sector agenda and requested specific
suggestions for developing a shortened list of device types. The NTEP
Director, NIST Technical Advisor, and the Sector Chairman will compile
the comments and develop a recommendation for the 2003 Participating
Laboratories and Weighing Sector meetings.

[]{#__RefHeading___Toc62283047 .anchor}5. Scope of the Certificate of
Conformance

**Source:** 2001 Weighing Sector Item 8b - See attachment to Agenda Item
5 for the copy of the 2001 Sector Summary for Item 8b.

**Background:** This item was discussed during the 2001 Sector meeting.
There was no consensus on the scope of the Certificate of Conformance
and whether the Certificate should list the manufacturer's intended
application(s).

**Discussion:** Ross Andersen, NY, stated that the Certificate of
Conformance (CC) should not be application specific or limiting,
however, there are application specific devices according to Handbook
44. Some of the Sector members commented that an applicant should be
able to request that the device under evaluation be limited to specific
applications.

The NTEP Director commented that an applicant to NTEP should indicate
what they want covered on the certificate. After that, the participating
laboratory will test the device to applicable checklist requirements and
will draft the CC according to the features and option that have been
evaluated (and passed). Many of the current applications have a place
for the applicant to describe the intended use, applications, particular
installation requirements, or other observations and comments.

A participating laboratory suggested that the NTEP Application not
include "general purpose" as an open‑ended description of intended use
and that the applicant must make a selection of one or more checkboxes
relating to the Handbook 44 application device types.

Some of the participating laboratories indicated that the term "general
purpose" listed in the "Application" paragraph of the certificate give
the appearance that the device is suitable for any application
regardless of division size since Handbook 44 does not provide enough
guidance to determine suitability. One of the manufactures stated that
scale dealers and distributors should be capable of determining suitable
devices to sell to their customers.

The NTEP Director indicated that most states have indicated that the
"Application" paragraph of the CC is limiting. One of the participating
laboratories indicated that limiting CCs is also a problem in that some
devices certified for one application are perfectly suitable for other
Handbook 44 applications.

**Conclusion:** There was no consensus on whether the Certificates of
Conformance, as a rule, should limit device applications. The Sector
agreed that greater responsibility should be placed on the applicant in
providing information on device limitations when filling out the NTEP
application. No changes on the scope of the NTEP Certificate of
Conformance are recommended by the Sector.

The Sector further recommends that the NTEP application be modified to
indicate appropriate boxes to identify the intended use and
applications; and add a statement that based on the information provided
and the results of the evaluation; NTEP will determine the applicable
tests to be conducted and information to be included on the Certificate
of Conformance. The Sector did not submit specific amendments to the
NTEP Application. This item will be carried over to the next meetings of
the NTEP Participating Laboratories and NTETC Weighing Sector.

[]{#__RefHeading___Toc62283048 .anchor}6. Policy for Initial Test Only
vs. Full Evaluation when a Modification is Made which Requires Testing

**Source:** 2001 Weighing Sector Item 10

**Background:** See 2001 Sector Summary Agenda Item 10 for additional
background information.

**Discussion:** The NTEP Director reported that NTEP has been
implementing the 2001 Sector recommendation and has encountered no major
problems. Most of the requests for amendments have involved repeating
influence factor or permanence testing. The NIST Technical Advisor and
some of the sector members indicated that the policy would promote
uniformity among the labs and provide some advance notification to NTEP
applicants if the policy were documented and published as part of the
NTEP application, administrative policies, or technical policies.

SMA reported that their document is still an "in-house" draft but could
be used by the NTEP Director and the participating laboratories as
guidelines to assist in making a decision on the extent of NTEP
re-evaluations.

There was also discussion that a minimum list of metrologically
significant components be developed with a statement relating to a
minimum amount of re-evaluation associated with each component. A
consensus could be gathered using information from the NTEP Director,
participating laboratories, original equipment manufacturers (OEM) and
other knowledgeable parties. Manufacturers are typically reasonable and
it is to the OEMs benefit to agree on a common list

**Conclusion:** The Sector recommended that the NTEP Committee consider
the following underlined amendments for Publication 14, NTEP
Administrative Policy, paragraph D.2.

> **D.2 Responsibility for Reporting Occurrence of Modification**
>
> **b. NTEP Options**

On the basis of the manufacturer's notification, NTEP will decide
whether or not to require an evaluation for approving the modification
or issuance of a new Certificate of Conformance [(CC)]{.underline}.
[When a metrologically significant modification is to be applied to a
device with an existing CC, the manufacturer and NTEP shall attempt to
agree upon the extent of reevaluation that might be required before such
modification is applied. In the event of a disagreement, a full
reevaluation shall take place.]{.underline} NTEP will notify the
manufacturer accordingly.

[The decision of NTEP can be appealed to the NCWM Board of Directors
according to NCWM Publication 14 Administrative Policies, Section T.
Appeal and Review Process.]{.underline}

Additionally, SMA Guidelines are to be to be submitted to the Sector by
the middle of May 2003 for consideration at the next Sector meeting.

[]{#__RefHeading___Toc62283049 .anchor}7. NCWM Publication 14
Administrative Procedures -- Conformity Assessment

**Source:** NCWM

**Background:** At the 2002 Annual Meeting, Mr. Patoray reported that
the Work Group was formed and included Dennis Krueger (NCR), Bill West
(Ohio NTEP lab), Steve Cook (NIST Technical Advisor), Joe Dhillon, (NIST
Conformity Assessment Advisor), Ray Bales (Weigh-Tronix and Scale
Manufacturers Association member), and Frank Rusk (First Weigh), with
additional input from Rich Tucker (Tokheim and Gasoline Pump
Manufacturers Association member). The Work Group met twice and
developed a preliminary outline for an NTEP Conformity Assessment
Program. Mr. Patoray discussed the ideas and possible direction during a
presentation to the NCWM Board of Directors (BOD). The BOD requested
that Mr. Patoray present the outline to other interested parties so that
they may provide the BOD with additional feedback

**Discussion/Conclusion:** A presentation on Conformity Assessment was
made available for review and comment by interested parties. No action
was recommended by the Sector.

[]{#__RefHeading___Toc62283050 .anchor}8. Multiple Load-Receiving
Elements Attached To One Indicator

(This item has been combined with agenda item 10)

**Source:** 2001 Weighing Sector Agenda Item 13 - NTEP Participating
Laboratories

**Background:** An application was submitted for an indicator with the
capability to display the weight reading for up to 32 load-receiving
elements. The Digital Electronic Scales Checklist, Section 34 lists the
criteria for evaluation of a single indicator connected to two or more
load-receiving elements. Currently, indicating elements have been
connected with up to four load-receiving elements with the ability to
continually monitor or display each one. It is not clear how the
operator will be able to monitor 32 scales connected to the indicator.
Additionally, it is not clear how the technology actually performs its
task. NCWM Publication 14 does not specify how many load-receiving
elements must be simulated and or/submitted for type evaluation.

At the 2001 Sector meeting, there appeared to be a consensus that the
number of load-receiving elements interfaced with a single indicating
element should not be limited by NTEP. However, there was no consensus
on specific recommendations for type evaluation procedures. The Ohio
Participating Laboratory was requested to evaluate the device in
question with all load inputs connected to the indicating element. The
inputs would include a combination of at least two scales and simulated
power loads on the remaining inputs. The Ohio Participating Laboratory
was to draft suggested test procedures for review and comment at the
next NTEP laboratory meeting in June 2002. The draft procedures and any
additional concerns will be submitted to the Weighing Sector during the
2002 Sector meeting for review and comment.

**Discussion:** The Sector reviewed on the language submitted by Bill
West and Darrell Flocken. The Sector generally agreed with the language
at their meeting but wished to reserve final agreement until paragraph
numbers were added to the language.

**Conclusion:** The Sector was balloted on this item which recommended
the language in the following [underlined]{.underline} text be added to
NCWM Publication 14, Weighing Devices Chapter 1, Section 34, Page DES-54
for ZERO and TARE on indicators interfaced to multiple load‑receiving
elements. The results of the ballot were 6 in favor (with one
affirmative vote requesting language clarification) and 4 voters
abstaining (one voter abstained pending changes to the wording for
clarification) and no negative votes. The following language has been
edited for clarification based on the comments.

34. **Multiple Load-Receiving Elements (Page DES-54 2002 Edition)**

> **(No changes to current contents before this point!)**

+-----+-----------------------------------------------+----------------+
| **3 | **[Zero-setting mechanism.]{.underline}**     |                |
| 4.7 |                                               |                |
| .** | There must be means for setting each          |                |
|     | load-receiving element to a zero balance      |                |
|     | indication. The zero-setting mechanism shall  |                |
|     | not operate independently on a summed weight  |                |
|     | indication when values for individual         |                |
|     | load-receiving elements can be displayed.     |                |
+-----+-----------------------------------------------+----------------+
| *   | [**Individual indications for each            | **Yes** **No** |
| *[3 | load-receiving element - no summed            | **NA**         |
| 4.7 | indication.** There must be means for setting |                |
| .1. | each load-receiving element to a zero balance |                |
| ]{. | condition. Each load-receiving element shall  |                |
| und | be evaluated as an independent scale and must |                |
| erl | meet appropriate requirements.]{.underline}   |                |
| ine |                                               |                |
| }** |                                               |                |
+-----+-----------------------------------------------+----------------+
| *   | [**Single indicator with two or more          | **Yes** **No** |
| *[3 | load-receiving elements that can be selected  | **NA**         |
| 4.7 | individually** -- The indicator must provide  |                |
| .2. | some means to monitor zero for each of the    |                |
| ]{. | load-receiving elements individually,         |                |
| und | regardless of whether or not they can be      |                |
| erl | summed. (This may require a "center of zero"  |                |
| ine | indication for each load-receiving            |                |
| }** | element.)]{.underline}                        |                |
+-----+-----------------------------------------------+----------------+
| **[ | [**Individual indications for each            | **Yes** **No** |
| 34. | load-receiving element - with summed          | **NA**         |
| 7.3 | indication**. Each individual load-receiving  |                |
| ]{. | element display must operate within the       |                |
| und | guidelines defined in section 34.7.1. or      |                |
| erl | 34.7.4. If the instrument has the ability to  |                |
| ine | operate in a "Sum Only" mode, the summed      |                |
| }** | display must operate within the guidelines in |                |
|     | section 34.7.4.]{.underline}                  |                |
|     |                                               |                |
|     | [In this case, when the system is             |                |
|     | zeroed;]{.underline}                          |                |
|     |                                               |                |
|     | a.  [all indications must be set to zero,     |                |
|     |     including the summed display,             |                |
|     |     or]{.underline}                           |                |
|     |                                               |                |
|     | b.  [the zero command must be rejected by the |                |
|     |     indicator.]{.underline}                   |                |
+-----+-----------------------------------------------+----------------+
| *   | [**Sum only indication.** The summed display  | **Yes** **No** |
| *[3 | shall be evaluated as an individual scale and | **NA**         |
| 4.7 | must meet appropriate requirements. The       |                |
| .4. | indicator may provide a display for each      |                |
| ]{. | load-receiving element, but the only display  |                |
| und | that will be considered "legal for trade"     |                |
| erl | will be the summed display. In this case, the |                |
| ine | total number of divisions for the system      |                |
| }** | shall not exceed 10 000 for Class III and     |                |
|     | IIIL.]{.underline}                            |                |
|     |                                               |                |
|     | [When testing these                           |                |
|     | configurations;]{.underline}                  |                |
|     |                                               |                |
|     | -   [at least two load-receiving elements     |                |
|     |     must be connected to the indicator if the |                |
|     |     A/D converter for the load-receiving      |                |
|     |     elements is not in the                    |                |
|     |     indicator.]{.underline}                   |                |
|     |                                               |                |
|     | -   [the evaluation will be performed with    |                |
|     |     the maximum number of load-receiving      |                |
|     |     elements requested by the manufacturer    |                |
|     |     (to be covered by the CC) if the          |                |
|     |     indicator has A/D converters for each     |                |
|     |     load-receiving element.]{.underline}      |                |
|     |                                               |                |
|     | -   [proper operation shall be confirmed with |                |
|     |     test weights applied to all individual    |                |
|     |     load-receiving elements, and then in      |                |
|     |     combination if the system has a summed    |                |
|     |     display. Testing may be performed in the  |                |
|     |     laboratory using load cell simulators or  |                |
|     |     load-receiving elements, or a combination |                |
|     |     of both load cell simulators and          |                |
|     |     load-receiving elements.]{.underline}     |                |
|     |                                               |                |
|     | -   [the capacity by division for each        |                |
|     |     load-receiving element in the system must |                |
|     |     appear adjacent to the weight display or  |                |
|     |     on the display itself.]{.underline}       |                |
|     |                                               |                |
|     | -   [each load-receiving element must be      |                |
|     |     identified, and the load-receiving        |                |
|     |     element that is in use must be            |                |
|     |     automatically identified by the indicator |                |
|     |     and if connected to a printer the         |                |
|     |     recorded representation shall identify    |                |
|     |     the load-receiving element (or elements)  |                |
|     |     from which the weight was                 |                |
|     |     obtained.]{.underline}                    |                |
+-----+-----------------------------------------------+----------------+
| **  | **[Tare mechanism.]{.underline}**             |                |
| [34 |                                               |                |
| .8. |                                               |                |
| ]{. |                                               |                |
| und |                                               |                |
| erl |                                               |                |
| ine |                                               |                |
| }** |                                               |                |
+-----+-----------------------------------------------+----------------+
| *   | [**Individual indications for each            | **Yes** **No** |
| *[3 | load-receiving element - no summed            | **NA**         |
| 4.8 | indication.** Each load-receiving element     |                |
| .1. | shall be evaluated as an independent scale    |                |
| ]{. | and must meet appropriate                     |                |
| und | requirements.]{.underline}                    |                |
| erl |                                               |                |
| ine |                                               |                |
| }** |                                               |                |
+-----+-----------------------------------------------+----------------+
| *   | [**Individual indications for each            | **Yes** **No** |
| *[3 | load-receiving element - with summed          | **NA**         |
| 4.8 | indication.** If the instrument has the       |                |
| .2. | ability to select individual load‑receiving   |                |
| ]{. | elements and sum, each must operate within    |                |
| und | the guidelines defined in section 34.8.1. or  |                |
| erl | 34.8.3.]{.underline}                          |                |
| ine |                                               |                |
| }** |                                               |                |
+-----+-----------------------------------------------+----------------+
| *   | [**Sum only indication.** The summed display  | **Yes** **No** |
| *[3 | shall be evaluated as an individual scale and | **NA**         |
| 4.8 | must meet appropriate                         |                |
| .3. | requirements.]{.underline}                    |                |
| ]{. |                                               |                |
| und |                                               |                |
| erl |                                               |                |
| ine |                                               |                |
| }** |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | [When testing these                           |                |
|     | configurations;]{.underline}                  |                |
|     |                                               |                |
|     | -   [At least two load-receiving elements     |                |
|     |     must be connected to the                  |                |
|     |     indicator.]{.underline}                   |                |
|     |                                               |                |
|     | -   [Proper operation shall be confirmed with |                |
|     |     test weights applied to all individual    |                |
|     |     load-receiving elements and then in       |                |
|     |     combination if the system has summed      |                |
|     |     display capability. Testing may be        |                |
|     |     performed in the laboratory using load    |                |
|     |     cell simulators and load-receiving        |                |
|     |     elements or a combination of load cell    |                |
|     |     simulators and load-receiving             |                |
|     |     elements.]{.underline}                    |                |
|     |                                               |                |
|     | -   [The indication for each load-receiving   |                |
|     |     element in the system must indicate       |                |
|     |     whether it is in gross or net mode. If    |                |
|     |     the system is capable of summing the      |                |
|     |     weights, the summed indication must also  |                |
|     |     indicate whether it is in gross or net    |                |
|     |     mode.]{.underline}                        |                |
|     |                                               |                |
|     | -   [Depending on the application, when tare  |                |
|     |     is entered, it may be appropriate to      |                |
|     |     either (check all that                    |                |
|     |     apply):]{.underline}                      |                |
|     |                                               |                |
|     |     -   [Switch all indications in the system |                |
|     |         to net]{.underline}                   |                |
|     |                                               |                |
|     |     -   [Switch only the scales involved plus |                |
|     |         the summed indication to              |                |
|     |         net]{.underline}                      |                |
|     |                                               |                |
|     |     -   [Leave all the individual scales at   |                |
|     |         gross and only switch the summed      |                |
|     |         weight to net]{.underline}            |                |
|     |                                               |                |
|     | [**Note**: It is not appropriate to switch    |                |
|     | all scales in the system to net mode if any   |                |
|     | platforms are at zero load. This would in     |                |
|     | effect allow taking zero tare on those        |                |
|     | platforms that are at zero.]{.underline}      |                |
|     |                                               |                |
|     | -   [~~Each load-receiving element must be    |                |
|     |     identified, and the load-receiving        |                |
|     |     element that is in use must be            |                |
|     |     automatically identified by the indicator |                |
|     |     and if connected to a printer the         |                |
|     |     recorded representation shall identify    |                |
|     |     the load-receiving element (or elements)  |                |
|     |     from which the weight was obtained.~~     |                |
|     |     (Technical Advisors note. This has been   |                |
|     |     deleted since the information required is |                |
|     |     the same as paragraphs 34.3 and           |                |
|     |     34.4)]{.underline}                        |                |
+-----+-----------------------------------------------+----------------+
| [   | [Capacity by division markings.]{.underline}  |                |
| 34. |                                               |                |
| 9.] |                                               |                |
| {.u |                                               |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | ~~34.8.1.~~[34.9.1.]{.underline} no change to |                |
|     | current contents.....                         |                |
+-----+-----------------------------------------------+----------------+
|     | ~~34.8.2.~~[34.9.2.]{.underline} no change to |                |
|     | current contents....                          |                |
+-----+-----------------------------------------------+----------------+
|     | ~~34.8.3.~~[34.9.3.]{.underline} no change to |                |
|     | current contents.....                         |                |
+-----+-----------------------------------------------+----------------+
|     | ~~34.8.4.~~[34.9.4.]{.underline} no change to |                |
|     | current contents.....                         |                |
+-----+-----------------------------------------------+----------------+

[]{#__RefHeading___Toc62283051 .anchor}9. G-S.1. Identification, and
Table S.6.3. Markings; Software Based Built-for-Purpose Devices

**Source:** 2001 Weighing Sector Agenda Item 16

**Background:** At the May 2001 NTEP Laboratory meeting, the Measuring
Sector Laboratories discussed marking requirements for "software-based"
devices such as electronic cash registers or "smart recording elements"
interfaced with devices. In some cases, the indicator for the system is
a generic computer display. If the required markings are placed on the
display at the time of installation and then at some time future time
the display is replaced, the required markings may be lost. The
laboratories agreed that a real time or "software-based" display of the
model, capacity, unit of measurement, and other required markings on the
display are preferable. The laboratories also agreed that the
information could either be continuously displayed or displayed by
pressing a single key (a series of keystrokes could be permitted with
on-screen prompts and directions). The laboratories forwarded the
following proposed language to the Measuring Sector for consideration at
its 2001 meeting. The intent of the proposal is to modify Handbook 44
paragraph G-S.1.1 to allow a real time display of the required marking
information for software-based systems.

The NCWM Specifications and Tolerances Committee (S&T) has already
addressed the issue of capacity marking requirements of video display
terminals. At the 77^th^ NCWM Annual Meeting in 1992, the NCWM adopted
the following:

The Committee recommends that Table S.6.3.a. and S.6.3.b. (note 3) be
interpreted to permit the required capacity and scale division marking
to be presented as part of the scale display (e.g., displayed on a video
terminal or in a liquid crystal display), rather than be physically
marked on the device. As part of the current language in the tables and
this interpretation, the capacity by division statement must be adjacent
to the weight display and continuously displayed when in the weighing
mode.  However, if the weighing mode of the scale permits different
menus for selecting operations to be displayed, the weight information
and capacity by division statement must be continuously displayed if
this display is the customer\'s only display. These requirements apply
to all of the weighing modes that may be selected for commercial
transactions. The statement does not have to be displayed when the
indicating element operates in modes other than the weighing mode. This
does not require a change to Handbook 44. This interpretation will be
included in NCWM Publication 14 and NCWM Publication 3.

> The statement that the capacity by scale division is not required to
> be displayed when in modes other than the weighing mode refers to
> situations where the scale is in the supervisor\'s mode and manager
> functions are being performed.

For additional background information, see the Report of the 87^th^
National Conference on Weights and Measures, Specifications and
Tolerances Committee agenda item 310-1.

This item is currently before the NCWM S&T Committee. The Committee
asked that the NTETC Weighing and Measuring Sectors review both
proposals and attempt to agree on a single proposal that is acceptable
to all parties. Additionally, the NIST Technical Advisor will develop
language for Publication 14, Section 1, Marking-Complete Scales, page
DES-13 and Section 2, Marking-Indicating Elements, page DES-18.

**Discussion:** The Weighing Sector, at its 2002 meeting, discussed this
item at length and reviewed comments from the NCWM S&T Committee and
from other interested parties at the 2002 NCWM Interim and Annual
Meetings. The Sector also discussed the above information and agreed to
limit the scope of the proposal to not built‑for‑purpose devices.

Will Whottlie, Maryland, (NTETC Measuring Sector, NCWM S&T Committee,
and SWMA S&T Committee) also participated in the discussions and
presented the concerns of the 2001 Measuring Sector, and the regional
and national S&T Committees. He stated that Measuring Sector
manufacturers were concerned about requiring G-S.1. Identification.
information to be continuously displayed in the video terminal since all
the area (real estate) on the display is needed for other purposes
during the normal mode of operation.

The Weighing Sector discussed the use of keyboard/keypad entries but was
concerned that without a standardized access method, there would be no
information on the device or system to help locate the appropriate
Certificate of Conformance. As a minimum, the device needs to display
minimum information needed to find the Certificate of Conformance Number
in order to look up, among other things, the instructions for accessing
the identification information.

The Weighing Sector agreed that minimum information would not have to be
displayed on the device if there was a single standardized method to
access the information documented in Handbook 44. The Sector felt that
the standardized method should be determined by a consensus of weighing
and measuring device manufacturers.

The Weighing Sector considered location of the proposed added language
in paragraph G-S.1. Identification. The NIST Technical Advisor suggested
that adding another note to G-S.1. may be confusing in that the note may
not be clear that it applies to all of G-S.1. The majority of the Sector
did not show a strong preference whether the proposed language be part
of G-S.1. or be written as a sub paragraph of G‑S.1.

**Recommendation:** The 2002 Weighing Sector recommends the following
language be incorporated into Handbook 44 General Code 1.10, paragraph
G-S.1.1.- Software Based, Not Built--For--Purpose Devices., renumber
existing paragraph G-S.1.1. and add a definition for "built-for-purpose
device:"

> G-S.1. Identification. -
>
> G-S.1.1.- *[Software Based, Not Built--For--Purpose Devices. For
> software based, not built--for--purpose devices, the manufacturer and
> a model designation, or the Certificate of Conformance (CC) Number,
> shall be continuously displayed or permanently marked on the device.
> Clear instructions for accessing the remaining required information
> shall be listed on the CC. Alternatively, all required information in
> G-S.1. Identification. (a) through (g), may be continuously displayed
> or accessible by (a specified H‑44 method such as
> Help/About).]{.underline}*

Renumber existing G-S.1.1. Remanufactured Devices and Remanufactured
Main Elements. to G‑S.1.2.

Add a new definition for "built-for-purpose" devices as follows:

> built-for-purpose device. Any main element, which was manufactured
> with the ~~primary~~ intent that it be used as or part of a weighing
> or measuring device or system.

The NIST Technical Advisor reported the recommendations of the 2002
Weighing Sector to the 2003 Measuring Sector.

The following changes recommended by the Measuring Sector at their 2002
meeting were balloted to the Weighing Sector for their concurrence.

**Amend G-S.1. Identification *(d)* as follows:**

> **G-S.1. Identification.** -
>
> *(d) except for equipment with no moving or electronic component parts
> [and software-based not built‑for‑purpose devices]{.underline}, a
> nonrepetitive serial number;*
>
> *\[Nonretroactive as of January 1, 1968\]*

Add new paragraph G-S.1.1. and renumber existing paragraph G-S.1.1. as
follows:

> ***[G-S.1.1.- Software Based, Not Built--For--Purpose
> Devices.]{.underline}*** *[For software based, not built--for--purpose
> devices, the following shall apply:]{.underline}*
>
> *[(a) the manufacturer or distributor and the model designation may be
> continuously displayed or marked on the device\*, or]{.underline}*
>
> *[(b) the Certificate of Conformance (CC) Number may be continuously
> displayed or marked on the device\*, or]{.underline}*
>
> *[(c) all required information in G-S.1. Identification. (a), (b),
> (c), (g), and the software version designation may be continuously
> displayed. Alternatively, a clearly identified System Identification,
> G-S.1. Identification, or Weights and Measures Identification may be
> accessible through the "Help" menu. Required information includes that
> information necessary to identify that the software in the device is
> the same type that was evaluated.]{.underline}*
>
> *[\*Clear instructions for accessing the remaining required
> information shall be listed on the CC. Required information includes
> that information necessary to identify that the software in the device
> is the same type that was evaluated.]{.underline}*
>
> *[\[Nonretroactive as of January 1, 200X\]]{.underline}*
>
> **G‑S.1.~~1~~[2]{.underline}. Remanufactured Devices and
> Remanufactured Main Elements. -**

Add a new definition for "built-for-purpose" devices as follows:

> built-for-purpose device. Any main device or element which was
> manufactured with the intent that it be used as or part of a weighing
> or measuring device or system.

The vote count for the Weighing Sector was as follows:

AFFIRMATIVE: (9), NEGATIVE: (1), ABSTAIN: (3). Five ballots were not
returned. The NIST Technical Advisor forwarded the results and comments
to the 2003 NCWM S&T Committee for their consideration.

[]{#__RefHeading___Toc62283052 .anchor}10. Zero and Tare on a Single
Indicating Element Interfaced with Multiple Platforms

(This item was combined with the 2002 Weighing Sector Agenda Item 8)

**Source:** 2001 Sector Agenda Item 18

**Background:** The Ohio NTEP Participating Laboratory has received
several applications for indicating elements with multiple displays
interfaced with multiple load-receiving elements that have the ability
to simultaneously display the indication of each load-receiving element
in addition to a summed weight display.

Publication 14 for Digital Electronic Scales, Section 34.7. Multiple
Load Receiving Elements states:

"There must be a means for setting each load-receiving element to a zero
balance indication. The zero-setting mechanism shall not operate
independently on a summed weight indication when values for individual
load‑receiving elements can be displayed."

**Discussion/Conclusion:** This item was combined with agenda item 8.
Please see the Discussion and Conclusion for agenda item 8.

[]{#__RefHeading___Toc62283053 .anchor}11. Screen Savers on Electronic
Cash Registers and Point-of-Sale Systems (ECR/POS)

**Source:** 2001 Sector Agenda Item 19

**Background:** In the past few years, ECR manufacturers have been
adding screen saver features to CRT displays. The function of the screen
saver can be metrologically significant because zero information may not
be available to the customer and operator at the start of a transaction.
Therefore the screen saver feature needs to be evaluated by NTEP to
insure compliance to all requirements. This is particularly important if
the CRT is also the primary display.

At its 2001 meeting, the Sector agreed to recommend that the three
examples listed in the agenda be incorporated into Publication 14 ECRs
Interfaced with Scales checklist and, where applicable, in the Digital
Electronic Scales Checklist. The NIST Technical Advisor developed
language for both checklists. The language was circulated and balloted
among the sector members in mid-December 2001 with comments and
suggestions due by January 4, 2002.

The Sector voted in favor of recommending language proposed by the NIST
Technical Advisor for the 2002 Edition of NCWM 14 to the NTEP Committee
(9 Affirm, 3 Neg., 3 Abst.) on the language for the Scales Checklist and
(8 Affirm, 3 Neg., 4 Abst.) on the language for the ECR Interfaced with
Scales Checklist. Based upon comments received, there appeared to be
some confusion in the proposed language to be included in the weighing
devices checklist and a technical issue on the language for the
electronic cash register interfaced with scales checklist. The
participating weighing device laboratories reviewed the proposed
language and provided the NIST Technical Advisor with additional
guidance.

**Ballot Discussion (sleep/screen saver mode on scales):** One of the
comments during the ballot process indicated that it was not clear if a
scale had to comply with one or all of the solutions listed in the
proposed language. The NIST Technical Advisor modified the language to
make it clear that a scale with a sleep or screen saver mode had to
comply with only one of the solutions in the proposed language (see
attachment to item 11).

Additional comments indicated that the marking of a legend that
describes the indication other than zero (such as a scrolling message or
a series of dashes across the display) is a new marking requirement and
is not supported by language in Handbook 44.

The NIST Technical Advisor and one of participating laboratories report
that it was the intent of the NCWM that a label defining the other than
digital zero indication is necessary if the indication representing the
zero condition is not clear in its meaning.

The following is from the 1992 Weighing Sector Meeting:

> **Conclusions:** Those commenting on this issue indicated that it is
> appropriate to allow the use of other than a continuous indication of
> zero provided that the device inhibits use or otherwise clearly
> indicates an out-of-balance condition if present. The Committee
> generally agreed this issue is most appropriately addressed by the
> NCWM.

The following is from the Report of the 78^th^ of the NCWM Annual
Meeting, Specifications and Tolerances Committee Item 320-1 S.1.1. Zero
Indication (page 293):

> **Discussion:** Scale manufacturers are designing scales with
> indications for zero other than a digital representation. Alternative
> indications may be a zero annunciator, a series of sequencing dashes
> moving across the display, or a scrolling message moving across the
> customer display. These latter indications must be clearly defined on
> the device as the zero indication as required by General Code
> paragraph *G-S.6.* Marking Operational Controls, Indications, and
> Features.
>
> When a shared weight display was incorporated into a point-of-sale
> scanner scale in 1986 and 1987, many Conference members had serious
> reservations about the absence of a digital zero indication. Since
> that time, weights and measures officials appear to have become much
> more comfortable with devices having zero indications other than the
> digital zero. Comments submitted to the Committee indicate that
> weights and measures officials are willing to accept alternative forms
> for indicating the zero balance condition if clearly defined.
>
> Consequently, the Committee recommends that all scales be permitted to
> indicate the zero balance condition by means other than a digital zero
> indication; however, scales using other than a digital zero indication
> for the zero-balance condition must either inhibit the weighing
> operation or return to a continuous digital weight indication when the
> scale is no longer at zero. This alternative is also extended to
> point-of-sale systems, as indicated by deleting the qualifying phrase
> at the beginning of S.1.1. (c) which previously restricted part (c) to
> point-of-sale systems.

It appears that the intent of the NCWM was to allow alternate forms of
the zero balance condition, provided that it is clearly defined and that
the scale "inhibit the weighing operation or return to a continuous
digital weight indication when the scale is no longer at zero." **Ballot
Discussion (sleep/screen saver mode on ECR interfaced with scales):**
One of the comments received during the ballot process indicated that
the intent of the of the NCWM S&T Committee in the previous discussion
also apply to electronic cash registers interfaced with scales (ECR).
Therefore, the screen saver (or other information is displayed on the
ECR) is intended to represent a zero indication other than a digital
zero, and that the ECR display needs to be labeled with a statement
defining the other than zero indication.

The NIST Technical Advisor agreed that the zero indication would have to
be defined in the case a transaction could be continued or initiated
***without*** requiring operator intervention, giving the operator and
customer time to verify the zero condition of the scale. In many cases,
the ECR automatically logs off the cashier requiring the cashier to log
back on to the ECR to initiate or continue a transaction. This allows
sufficient time for the operator to verify the zero condition of the
scale as required in UR.4.1. Balance Condition.

The commenter indicated that field inspectors have reported that ECR
operators still ignore the zero indication of the POS scale during the
log in process and that items have been on the scale during the log in
of an ECR. Additionally, most electronic stand-alone scales display to a
zero or an error condition (if weight on the scale is out of range of
the zero limits) when turning on a scale where the video display
immediately goes from the screen saver/sleep mode to displaying the
information sent from the POS scale.

**Participating Laboratory Discussion:** At the 2002 Participating
Laboratories meeting in Albany NY, the weighing devices laboratories
discussed this item and information from past discussions of the NCWM
S&T Committee. The weighing labs generally agreed that the procedures
for evaluating the sleep mode on scales are technically correct. They
have not reviewed the amended language in the attachment. Additionally,
the weighing labs did not reach a consensus on the ECR sleep/screen
saver mode and agreed that the NIST Technical Advisor agreed to develop
two versions of the language for ECRs interfaced with scales. One
version did not require a label defining the other than zero indication
if the operator is required to log on to the ECR (after the ECR
automatically logged off to enter the sleep mode) to continue or
initiate a transaction. The other version would require that "zero
indication" be defined and labeled regardless of the automatic log off
and operator log in procedures (see attachment to item 11).

**Discussion:** The Sector reviewed the proposed language in the
attachment for Sector agenda item 11. The attachment contained language
to evaluate sleep modes on scales and two versions for evaluating the
sleep/screen saver mode on ECRs interfaced with scales.

The discussion focused on two different issues.

***Part 1***. Some of the Sector members (both manufactures and
participating laboratories) indicated that a zero condition was
adequately represented by scrolling messages or other non-weight
information; and a label defining the zero indication is not required
provided that there are automatic means for the scale to return to an
active weighing mode when the scale is in a non zero condition. The NIST
Technical Advisor and other sector members agreed that that adequate
customer protection was provided. However, the customer does not know
what the scrolling messages in place of the weight information (other
than a digital zero indication) represents. The Sector members referred
to the 1993 Report of the 78^th^ NCWM (S&T Item 320-1), which discussed
the need for a descriptive label as required by General Code paragraph
G-S.6. Marking Operational Controls, Indications, and Features.

***Part 2***. In the case of electronic cash registers (ECRs) interfaced
with scales, the issue the Sector considered was whether or not the act
of logging onto the ECR was considered adequate operator intervention in
order to verify the zero condition of the scale prior to a new
transaction without requiring a descriptive label. Two versions of the
"ECRs Interfaced with Scales" checklist were submitted to the sector.
The proposals differed in that version 1 allows the customer to put a
load on the scale and then, the operator must log on and check the zero
condition of the system (the POS system does not have to label and
define the screen saver/sleep mode as zero). Version 2 requires the
system to be labeled that the screen saver/sleep mode represents a zero
indication; or that the system be interlocked from weighing until a
digital zero has been displayed to the customer and operator.

During the discussion of part 2, one of the participating laboratories
reported that field inspectors have observed that operators were logging
onto ECRs with an operational sleep/screen saver where items were
already on the scale. The operators were not checking the zero condition
of the scale and proceeded with the transaction.

One of the ECR manufacturers stated that there is a problem with current
Publication 14 language and that there are inconsistencies among the
participating laboratories. Additionally, after-market modifications are
being made to the way the scale display is represented on ECRs. This is
a metrological change to the system (and should require a version
change) that is frequently not submitted for evaluation or detected by
the field official during subsequent testing. Jurisdictions are
experiencing problems with minor inconsistencies. Additionally it is
aggravating and costly for manufacturers to compete with others that do
not comply. The manufacturer also noted that there is a problem with
"screen saver" terminology.

**Conclusion:**

***Part 1***. The Sector voted on the following:

> Should an indication other than a digital zero be considered a form of
> zero indication without defining it on the device?
>
> The results were; 1 yes vote (yes this is okay), 15 no votes (this is
> not okay), and 3 abstaining votes.

***Part 2***. There was general support of version 2 and little support
for version 1 in the attachment for sector item 11. The Sector agreed
not to include the proposed language in version 2 because: (1) the
proposed language is nearly identical to the language recommended for
the DES checklist; (2) it has the same requirements; and (3) the
introduction to the ECRs Interfaced with Scale states that ECR checklist
is a supplement to the DES checklist. Additionally, the participating
laboratories will continue to develop a proposal for reporting size of
the weight display, its location, and weight information area on
Certificates of Conformance for consideration during the 2003 meeting of
the Weighing Sector.

The Sector recommends the following amendments to Publication 14,
Chapter 1, Digital Electronic Scales (DES), Section 11. Additionally,
the NIST Technical Advisor recommends an additional statement be added
to Publication 14, Chapter 6, ECRs Interfaced with Scales, Section 8,
Indicating and Recording Elements informing applicants and participating
laboratories to refer to Publication 14, Chapter 1 DES for applicable
requirement and test procedures for ECRs and systems that provide the
only representation of the primary weight indication.

11\. Indicating and Recording Elements - General (DES-33)

**Code Reference: G-S.5.1., G-S.2., [G-S.6., S.1.1.,]{.underline} and
S.1.12.**

4.  ~~When in the "sleep" or "screen saver" mode the zero indication
    must be defined.~~ [Does the scale or indicating element have a
    screen saver, sleep mode or power save feature?]{.underline}

[Yes]{.underline} [No]{.underline}

> ***Note:** Other than a continuous zero indication may be used to
> indicate zero; however, some indication must be used and the
> indication must be clearly defined. For example, when in the sleep
> mode, a scale may display dashes while at zero. ~~In this case, a
> legend must be included adjacent to the display to indicate that the
> dashes in display indicates the scale is on zero (See also Code
> Reference S.1.1. Zero Indication).~~*
>
> [Manufacturers have been adding screen savers and sleep modes to
> scales for the purpose of prolonging the useful life of displays or
> provide promotional or other information on displays during periods of
> scale inactivity.]{.underline}
>
> [Additionally, some scales have automatic shut-off, or power (battery)
> save modes. These features promote energy conservation or prolong
> battery life in battery-operated scales. This feature either
> automatically turns off the scale after a period of inactivity or only
> turns off the display. If the power or battery save mode only turns
> off the display to save power, the feature is considered to be a sleep
> mode and should be evaluated using the screen saver/sleep mode
> criteria.]{.underline}
>
> [The function of a screen saver, sleep mode and power save feature can
> be metrologically significant because zero information may not be
> available to the customer and operator at the start of a
> transaction.]{.underline}
>
> [NIST Handbook 44 Scales Code paragraph S.1.1. (c) Zero Indication.
> states that the zero-balance condition can be indicated by other than
> a continuous digital zero indication provided that effective means are
> provided to inhibit a weighing operation or to return to a continuous
> digital indication when the scale is in an out-of-balance
> condition.]{.underline}
>
> [The zero indication must be defined if the zero condition of the
> scale is represented by other than a digital representation. In this
> case, a legend must be included as part of, or adjacent to the display
> to indicate that indications other than a digital zero (e.g. dashes in
> display or other indications such as scrolling messages) indicate the
> scale is on zero (See also General Code Reference G-S.6. Marking
> Operational Controls, Indications, and Features).]{.underline}
>
> [The following are examples of acceptable screen saver/sleep mode
> operations. Checks the method(s) used by the scale or describe the
> screen saver, sleep mode, or power save feature operation if it is not
> one of the examples listed below.]{.underline}

-   [The primary weight indication is continuously displayed while in
    the screen saver/sleep mode.]{.underline}

-   [A clearly defined zero annunciator that is active only when the
    scale is in a zero gross load condition.]{.underline}

-   [Activation of the sleep or battery/power save mode turns off the
    scale requiring the operator to turn on the scale before a weighing
    operation can be performed.]{.underline}

-   [Activation of the sleep or battery/power save mode only turns off
    the primary weight display or the primary weight display is replaced
    by scrolling messages or dashes. The method of indicating a zero
    balance condition must be clearly defined as the zero indication as
    required by General Code paragraph G.S.6. Marking Operational
    Controls, Indications, and Features. The legend must state,
    "scrolling messages indicates scale is at zero" or similar
    statement.]{.underline}

> [If the scale goes off of zero, the scale must either:]{.underline}

-   [return to the active weight display, or]{.underline}

-   [prevent the initiation of a weighing transaction until the scale
    has returned to a digital zero indication.]{.underline}

-   

> **[At least one of the following methods in 11.8.4.1. through
> 11.8.4.3. must be used to determine screen saver/sleep mode
> compliance.]{.underline}**

+-----+-----------------------------------------------+----------------+
| [1  | [The scale shall not enter the screen         | **Yes** **No** |
| 1.8 | saver/sleep mode when the scale is at other   | **NA**         |
| .4. | than a zero load condition unless the scale   |                |
| 1.] | is automatically powered off.]{.underline}    |                |
| {.u |                                               |                |
| nde | [To verify that power has been turned off     |                |
| rli | during the sleep mode, apply a test load on   |                |
| ne} | the scale and monitor the condition of the    |                |
|     | display until the screen saver/sleep mode is  |                |
|     | enabled and the display goes blank. Changing  |                |
|     | the load on the scale and depressing operator |                |
|     | or customer-operated keys cannot activate the |                |
|     | display.]{.underline}                         |                |
|     |                                               |                |
|     | [Turned the scale back on with the power      |                |
|     | switch/button weight on the scale, the scale  |                |
|     | must return to zero, or display an error code |                |
|     | or other meaningless                          |                |
|     | information.]{.underline}                     |                |
+-----+-----------------------------------------------+----------------+
|     | [As soon as the scale is ready to weigh,      | **Yes** **No** |
|     | check the "warm-up" accuracy of the scale by  | **NA**         |
|     | placing a test load of one-half scale         |                |
|     | capacity (or maximum available weight if      |                |
|     | one-half capacity is not available). The      |                |
|     | weight indication shall be within applicable  |                |
|     | tolerance.]{.underline}                       |                |
+-----+-----------------------------------------------+----------------+
| [1  | [If the primary weight display disappears in  |                |
| 1.8 | the screen saver/sleep mode with the scale at |                |
| .4. | zero and the power to the scale is not        |                |
| 2.] | automatically shut off, the display must      |                |
| {.u | comply with a or b below:]{.underline}        |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | > [(a) The zero indication or zero            | **Yes** **No** |
|     | > annunciator must be displayed, or defined   | **NA**         |
|     | > if zero is indicated by other than a        |                |
|     | > digital zero indication or                  |                |
|     | > annunciator.]{.underline}                   |                |
+-----+-----------------------------------------------+----------------+
|     | > [If a legend is used to define zero, it     | **Yes** **No** |
|     | > must be included adjacent to the display to | **NA**         |
|     | > indicate that the information (dashes,      |                |
|     | > scrolling message, and etc.) indicate the   |                |
|     | > scale is on zero.]{.underline}              |                |
+-----+-----------------------------------------------+----------------+
|     | > [The screen saver/sleep mode shall be       | **Yes** **No** |
|     | > deactivated and the continuous weight       | **NA**         |
|     | > display automatically returns under the     |                |
|     | > following conditions unless means are       |                |
|     | > provided to inhibit a weighing transaction  |                |
|     | > until the scale has returned to a digital   |                |
|     | > zero indication:]{.underline}               |                |
+-----+-----------------------------------------------+----------------+
|     | > [The scale drifts above zero]{.underline}   | **Yes** **No** |
|     |                                               | **NA**         |
+-----+-----------------------------------------------+----------------+
|     | > [Weight is added to the scale]{.underline}  | **Yes** **No** |
|     |                                               | **NA**         |
+-----+-----------------------------------------------+----------------+
|     | > [The scale drifts below zero]{.underline}   | **Yes** **No** |
|     |                                               | **NA**         |
+-----+-----------------------------------------------+----------------+
|     | > [The scale is in an overcapacity            | **Yes** **No** |
|     | > condition.]{.underline}                     | **NA**         |
+-----+-----------------------------------------------+----------------+
|     | > [(b) Means are provided to inhibit a        | **Yes** **No** |
|     | > weighing transaction until the operator has | **NA**         |
|     | > returned the scale to a digital zero        |                |
|     | > indication.]{.underline}                    |                |
+-----+-----------------------------------------------+----------------+

> **8. Indicating and Recording Elements - General (page ECRS-10)**
>
> **Code Reference: G-S.5.1., G-S.2., and S.1.12.**
>
> A point-of-sale [(POS)]{.underline} system shall be designed to
> provide clear, definite, and adequate indications. Its features and
> operations shall be designed so that they minimize the potential of
> both intentional or unintentional errors. The price-look-up (PLU)
> capability shall prevent the interaction of weight and nonweight PLUs,
> (e.g., weight-related PLUs must require a weight input and nonweight
> PLUs shall not respond to weight input). Manual weight entries are
> permitted only under specific conditions. Transaction information
> shall not be lost or unrecorded in the event of a power failure.
>
> Computing scales that have both the multiple sales accumulation
> capability and price-look-up capability that can operate
> simultaneously are considered to be electronic cash registers. These
> systems shall issue sales receipt tapes that are similar to those
> issued by cash registers. If the total prices computed using PLUs
> cannot be included in the sales accumulation capability, the scale is
> not required to issue a cash register receipt.
>
> *[An increasing number of POS system manufacturers and distributors
> have been replacing the primary gross weight indication provided by
> the POS scale (either built into the scale or a pedestal mounted
> display) with a primary and continuous gross weight indication
> included as part of the customer display provided by the POS
> manufacturer or distributor. The primary and continuous weigh
> indications, that are the only source of the primary gross weight
> information, are considered primary indicating elements and shall be
> evaluated according to Publication 14, Chapter 1, Digital Electronic
> Scales.]{.underline}*
>
> Paragraphs 8.1. through 8.9. remain unchanged.

12\. NTEP Evaluations and User Requirements in the Scales Code

**Source:** Maryland NTEP Participating Laboratory

**Background:** There has been some recent discussion that NTEP should
not be evaluating devices for user requirements.

At its 2001 meeting, the Sector recommended that Steve Cook, NIST
Technical Advisor, and Stephen Patoray, NTEP Director, work together and
review Publication 14 to verify that all checklist requirements and
procedures are referenced to applicable Handbook 44 paragraphs. During
the process of converting NCWM Publication 14 2000 edition from
WordPerfect to MS Word, the NTEP Director and the NIST Technical Advisor
corrected any remaining references to "User Requirements."

**Recommendation:** The NIST Technical Advisor and NTEP Director have
deleted nearly all references to User Requirements and replaced them
with appropriate references to Specifications, Tolerances, and Test
Notes. No evaluation criteria were deleted. No further action was
required on this item.

[]{#__RefHeading___Toc62283056 .anchor}13. NTEP Technical Policy
Publication 14 Section B.5.b. Change Platform Area to Length and Width

**Source:** 2001 Weighing Sector Item 22

**Background:** During a discussion of a proposal from the Maryland
Participating Laboratory to change Publication 14 Section B.5.b.
Weighing Systems, Scales, or Load-receiving elements of 30 000 lb or
Less, the Sector asked the SMA technical committee to draft platform
size criteria (for scales less than or equal to 30 000 lb) for
capacities that are between the capacities submitted for evaluation. For
example, if two scales are submitted for evaluation (a 3\'x3\', 2000 lb
and a 8\'x10\', 10 000 lb), what are the platform size parameters that
can accepted on the CC for intermediate capacities (8\'x10\', 2500 lb)?

**Discussion/Conclusion:** The participating Laboratories discussed this
item prior to the sector meeting and agreed that the only way to
interpret the existing guidelines is that any capacity not tested can be
as large as the next higher capacity tested. The Sector concurred with
the participating laboratories interpretation and reported that there
have been no reported problems. The Sector agreed to recommend that
Publication 14, Section B. Certificate of Conformance Parameters,
guideline 7. Weighing Systems, Scales, or Load-Receiving Elements of
30 000 lb or Less be amended as follows to clarify that in a family of
scales, the next size larger or smaller of the device tested can be
covered on the Certificate of Conformance provided they do not exceed
the next size of device tested.

> **7. Weighing Systems, Scales Or Load-Receiving Elements Of 30 000 lb
> Capacity or Less**
>
> **Note:** When submitting a family of devices that has capacities
> above and below 30 000 lb, the average of the highest and lowest
> capacities listed on the application will be determined. If the
> average is at or below 30 000 lb, the guidelines in Section 7 will be
> used as the selection criteria. If the average is above 30 000 lb, the
> guidelines in Section 8 will be used as the selection criteria. Scale
> families that are evaluated under Section 7 guidelines cannot extend
> the maximum capacity of the family without further evaluation. The
> applicant may request that Section 8 criteria be applied to take
> advantage of the 50 % to 135 % capacity range (8.1.a.) provided all
> other requirements of Sections 8 and 8.1 are met. The applicant should
> be aware of the differences in the selection criteria and what can be
> covered on the Certificate of Conformance based upon the applicable
> criteria.
>
> The models to be submitted for evaluation shall be those having:

a.  the lowest capacity and the highest capacity^1^

b.  the largest platform area for each of the capacities submitted

c.  the most resolution (highest number of scale divisions)

d.  the smallest scale division value (d).

> A CC will apply to all models that:

a.  are within the range of capacities,

b.  have platform areas up to but not larger than that evaluated at each
    capacity, with lengths or widths no greater than 125 % of either
    dimension tested (i.e. If a 5' x 5' scale is tested and passes
    evaluation, then a 6' x 4' scale could be included on the CC. A 3' x
    8' scale could not be included without additional testing),

    i.  ~~[have platform areas for intermediate capacities not submitted
        for evaluation up to but not larger than the next higher
        capacity submitted for evaluation, (i.e. If a 2000 lb 3' x 3'
        and 10 000 lb 8' x 10' scales were submitted for evaluation,
        then the CC would cover a 3000 lb capacity scale a platform area
        up to 80 ft^2^),]{.underline}~~

c.  [have platform areas *for intermediate capacities not submitted for
    evaluation* down to but no smaller than the next lower capacity
    submitted for evaluation and no larger than the next higher capacity
    submitted (i.e. If a 2000 lb 3' x 3', 10 000 lb 8' x 10' and a 25
    000 lb 12' x 12' scales were submitted for evaluation, then the CC
    would cover a 5000 lb capacity scale with a platform area down to 9
    ft^2^ and up to 80 ft^2^),]{.underline}

> ~~c~~d. have the same number of scale divisions or fewer,
>
> ~~d~~e. are within the range of the values of the scale division,
>
> ~~e~~f. have a platform construction with material similar to that of
> the equipment evaluated.

[]{#__RefHeading___Toc62283057 .anchor}New Items

[]{#__RefHeading___Toc62283058 .anchor}14. Publication 14 Changes to
Reflect NCWM Changes to Handbook 44, 2003 Edition

**Source:** NIST WMD (formerly OWM)

**Background:** The following items (a to c) represent amendments to
NIST Handbook 44 requirements based on changes accepted at the July 2002
NCWM Annual Meeting. Recommendations from the Sector will be submitted
to the NTEP Committee for consideration to amend NCWM Publication 14
Technical Policy, Checklists, and Test Procedures.

> **14.(a). Examples of Manufactured, Repaired, and Remanufactures
> Devices and Elements**

**Background:** During its 2002 Annual Meeting, the NCWM agreed that the
examples of manufactured, repaired, and remanufactured devices and
elements be posted on the NCWM or NIST websites for review and comment.
The NCWM agreed with the S&T Committee's recommendation that new
examples of these devices not currently listed be reviewed by the
appropriate NTETC Sector for a recommendation on whether the device
needs supplemental markings indicating that it has been remanufactured
or that the repair or remanufacture results in a device that is no
longer covered by its CC. If the Sector determines that the example
results in a device no longer covered by a CC, then the Sector will
provide the NTEP Committee references to existing Publication 14
technical policies or technical justification and suggested language to
amend existing policies.

**Recommendation/Conclusion:** The Sector recommended no further action
on this item.

> **14.(b). Definition of "Element"**

**Background:** At its 2002 Annual Meeting, the NCWM adopted the
following definition of "element."

**element. A portion of a weighing or measuring device or system which
performs a specific function and can be separated, evaluated separately,
and is subject to specified full or partial error limits**.

**Recommendation/Conclusion:** The Sector agreed that the definition
appears to be consistent with existing references to element in NCWM
Publication 14 and recommended no further action on this item.

> **14.(c). S.6.5. Livestock Scales, Nominal Capacity and Marking
> Requirements**

**Background:** At its 2002 Annual Meeting, the NCWM adopted the
following new paragraph for the determination of the nominal capacity
and marking requirements for livestock scales manufactured after January
1, 2003.

***S.6.5. Livestock Scales. - A livestock scale shall be marked with the
maximum capacity of each section of the load-receiving element of the
scale. Such marking shall be accurately and conspicuously presented on,
or adjacent to, the identification or nomenclature plate that is
attached to the indicating element of the scale. The nominal capacity of
a scale with more than two sections shall not exceed twice its rated
section capacity. The nominal capacity of a two-section scale shall not
exceed its rated section capacity\*.***

***\*Nonretroactive as of January 1, 2003\]***

**Recommendation/Conclusion:** The Sector reviewed the proposed language
developed by the NIST Technical Advisor and agreed to delete the terms
"vehicle scale used as livestock scales." The Sector further recommended
that NCWM Publication 14, Chapter 1, Section 5 and Section 64 be amended
as follows:

Page DES-22 Section 5

**5. Marking - Livestock, Vehicle, and Railway Track Scales**

  ----------------------- ----------------------------------------------- -----------------
  **Code References:                                                      
  S.6.,                                                                   
  [S.6.5.,]{.underline}                                                   
  Table S.6.3.a., and                                                     
  Table S.6.3.b.**                                                        

  5.1.                    The section capacity of ~~a~~ railway track     **Yes** **No**
                          [and livestock]{.underline} scales shall be     **NA**
                          marked on or adjacent to the identification     
                          badge on the indicating element.                

  5.2.                    ~~A v~~[V]{.underline}ehicle~~,~~               **Yes** **No**
                          [or]{.underline} axle-load~~, or livestock~~    **NA**
                          scale[s]{.underline} shall be marked with the   
                          concentrated load capacity of the scale. Such   
                          marking shall be identified as \"concentrated   
                          load capacity\" or by the abbreviation \"CLC\"  
                          and shall be accurately and conspicuously       
                          shown:                                          

  5.2.1.                  On, or adjacent to, the identification or       **Yes** **No**
                          nomenclature plate that is attached to the      **NA**
                          indicating element of the scale; and            

  5.2.2.                  On the load-receiving element of the scale.     **Yes** **No**
                          These capacity markings shall be added to the   **NA**
                          load-receiving element of any such scale not    
                          previously marked at the time of modification.  

  ~~5.3.~~                ~~If a vehicle scale is marked with maximum     **~~Yes~~**
                          load ratings in addition to the required CLC,   **~~No~~**
                          the ratings shall not exceed the maximum        **~~NA~~**
                          specified in UR.3.2.1. below and the            
                          accompanying table.~~                           

  5.3. ~~5.4.~~           The marked nominal capacity on all vehicle~~,~~ **Yes** **No**
                          [and]{.underline} axle-load~~, and livestock~~  **NA**
                          scales shall not exceed the concentrated load   
                          capacity times the quantity of the number of    
                          sections in the scale minus 0.5.                

  5.4 ~~5.5~~             Combination railway track/vehicle[, and         **Yes** **No**
                          combination vehicle/livestock]{.underline}      **NA**
                          scales shall be marked with (1) the nominal     
                          capacity and CLC for vehicle weighing, and (2)  
                          [the]{.underline} nominal capacity and section  
                          capacity for railway [and                       
                          livestock]{.underline} weighing. The e~min~ for 
                          both vehicle weighing and railway weighing      
                          shall also be marked.                           

                          **Note:** Combination scales (railway track     
                          /vehicle, [and vehicle/livestock]{.underline})  
                          shall be marked with all required information.  
  ----------------------- ----------------------------------------------- -----------------

> Page DES-25 Section 5 Marking - Livestock, Vehicle and Railway Track
> Scale. Delete Table UR.3.2.1. Span Maximum Load (references a User
> Requirement)
>
> Page DES-84 Section 64 Performance and Permanence Tests for Livestock
> Scales
>
> **64. Performance and Permanence Tests for Livestock Scales**

1.  Initial Type Evaluation (Field) Performance Tests

    1.  Performance Tests for Livestock Scales with 2 Sections:

> 64.1.1.1. Conduct two sets of increasing load and shift tests over
> each corner at 1/4 the nominal capacity of the scale. Be careful not
> to exceed the ~~CLC~~ [section capacity]{.underline} of a section when
> loading the weights. Record increasing/decreasing load indications as
> you add weights to or remove weights from the platform in at least
> five equal intervals. For the first set, perform this test on each
> corner and check zero balance before going on to the next corner. For
> the second set, complete the increasing load build up on one corner
> and move the weights to the next corner without unloading the scale.
> For each set when all the weights have been removed, record the return
> to zero. The scale must return to zero within one-half of a scale
> division. When analyzing the return to zero, consider the length of
> time the load was on the scale and for possible temperature changes
> that may have occurred during the test. Next, conduct an
> increasing/decreasing load test to the scale nominal capacity or at
> least to the used capacity by distributing the test load over the
> platform in at least five equal intervals and record the error for
> each interval.
>
> 64.1.2. Performance Tests for Livestock Scales with More than 2
> Sections:
>
> 64.1.2.1. At least two complete sets of shift tests shall be conducted
> over each section. This is to determine the repeatability of the
> scale. Each set must include determination of error at a minimum of
> five intervals of test loads up to 90 % of the ~~CLC~~[section
> capacity]{.underline} repeated over each section. For the first set,
> perform this test on each section, unloading the weights and checking
> zero balance before going on to the next section. For the second set,
> complete the increasing load build-up on one section and move the
> weights to the next section without unloading the scale. Take several
> readings as the weights are being removed. When all the weights have
> been removed, record the return to zero. The scale must return to zero
> within one-half of a scale division. When analyzing the return to
> zero, consider the length of time the load was on the scale and for
> possible temperature changes that may have occurred during the test.
> Determine scale errors at more points if desired. Avoid decreasing
> load tests when testing a section. Next, conduct an increasing load
> test to the scale nominal capacity or at least to the used capacity by
> distributing the test load over the platform in at least five
> intervals and record the error for each interval. Be careful not to
> exceed the ~~CLC~~[section capacity or]{.underline} a section when
> loading the weights and distribute loads across the section. Record
> decreasing load indications as you remove weights from the platform in
> at least five intervals.
>
> Conduct decreasing load tests after the sections have been tested to
> their maximum load and the weights are removed from the scale.
>
> **Note**: Decreasing load tests only apply to automatic indicating
> devices.
>
> 64.1.3. At least one complete set of shift tests to at least 90 % of
> the ~~CLC~~ [section capacity]{.underline} shall be conducted at
> mid-span between sections.
>
> 64.3. Permanence Test Minimum Use Requirements
>
> 64.3.3. For livestock scales with a nominal capacity over 75 000 lb:
>
> 64.3.3.1. 50 % of the loads must be above 50 000 lb or 80 % of the
> ~~CLC~~[section capacity]{.underline}, whichever is greater; and
>
> 64.3.3.2. 100 % of the loads must be above 20 000 lb or 50 % of the
> ~~CLC~~[section capacity]{.underline}, whichever is greater.
>
> 64.3.4. For all other scales:
>
> 64.3.4.1. 50 % of the loads must be above 50 % of the scale capacity;
> and
>
> 64.3.4.2. 100 % of the loads must be above 20 % of the scale capacity.
>
> 64.3.5. The minimum number of days that a device is required to be in
> use is 20 days. A minimum number of weighing operations to be
> conducted each day for the test period is not specified; however, the
> weighments should represent the scale's normal in-service use.
>
> 64.3.6. The device will be tested to at least the ~~CLC~~ [section
> capacity]{.underline} on the second test.

**Note:** Substitution or strain test methods are acceptable as long as
all conditions above are met.

[]{#__RefHeading___Toc62283059 .anchor}15. Publication 14, Incorporation
of OIML R 60 with Exceptions

**Source:** NTEP Committee

**Background:** In view of the increased interest for bilateral and
mutual recognition of test data agreements, it has been suggested to the
NCWM NTEP Committee and the Board of Directors that the incorporation of
OIML R 60 Edition 2000 (E) Metrological Regulation for Load Cells into
Publication 14 would be a logical step towards these agreements. There
are a very few NIST Handbook 44 references to load cells. Therefore, few
changes would be necessary to make OIML R 60 compatible with Handbook
44. The load cell test facilities at the NIST Force Group have already
demonstrated that they can generate internationally accepted test data.
The Force Group also has the ability to test for changes in barometric
pressure.

For load cells without electronics (analog load cells), the major
differences that must be addressed are:

1.  There is an extra tolerance step (Table 2, page LC-3) currently in
    Publication 14 that is supported by Handbook 44 tolerances for
    scales. Harmonization would likely require a change to Handbook 44
    to support the application of OIML R 60 tolerances.

2.  One-hour time dependence test in Publication 14 is not compatible
    with the OIML R 60 30-minute Creep Test. This may also require a
    change to Handbook 44 paragraph T.N.4.5. Time Dependence (either as
    separate language for load cells or as an amendment to the one-hour
    time requirement to more closely align with R 76 and R 50).

3.  There is no equivalent Accuracy Class III L in OIML R 60. This may
    have to remain in Publication 14 as an exception.

4.  Accuracy class marking requirements (A, B, C, D) in OIML R 60. This
    may also require a change in NIST Handbook 44 (for load cells
    manufactured after January 1, 200X).

5.  Humidity markings and testing in OIML R 60 would require a change in
    Handbook 44 to support marking and testing of load cells for
    humidity.

Other differences include the selection criteria for the load cell to be
submitted for test and is described on page 16 and Annex B in OIML R 60.

The NIST Technical Advisor is not aware of any discussions regarding the
testing of load cells with electronics (digital load cells). Additional
OIML R 60 testing includes tests for warm-up time, power supply
variations, short-term power reductions, bursts, electrostatic
discharge, electromagnetic susceptibility, and span stability.

**Recommendation/Conclusion:** The Sector discussed the above
recommendations. The NTEP Director provided additional background
information and indicated that no changes need to be made to Handbook 44
because load cell certificates are based upon data evaluation and the
same data can be used to verify compliance with Handbook 44 and OIML R
60. Darrell Tonini stated that he would bring this subject up to the
Scale Manufacturers Association Technical Committee and refer their
comments to the NTEP Director.

The Sector recommends no action on this item.

[]{#__RefHeading___Toc62283060 .anchor}16. Vehicle Scale Testing
Procedures

**Source:** NTEP Participating Laboratories

**Background:** At the 2002 Participating Laboratory Meeting, the
various labs demonstrated the procedures used to test vehicle scales.
The exercise demonstrated that the participating labs were correctly
testing the scales. However the language in the current procedures may
cause an evaluator to conduct additional testing. The NTEP Participating
Laboratories have amended the existing vehicle scale test procedure that
offers additional clarity to the procedures and promotes the uniform
application of test weights and test loads.

**Discussion:** The Sector reviewed and discussed the two proposals to
amend the vehicle scale test procedures. The procedures are included
with the attachment for Agenda Item 16.

The first proposal breaks up the long paragraphs in Publication 14, 2002
Edition vehicle scale test procedures in (hopefully) easier to follow
steps. The second proposal is included in a letter from Ross Anderson,
NY, describing the vehicle test procedures that include the steps in a
table format and describes test weights and weight cart positions and
usage. Ross Anderson will present additional proposed language, at the
Sector meeting. The Sector also reviewed a Power Point presentation
developed by Ross Anderson. Additionally, the Sector reviewed
information provided by the Ohio participating laboratory for possible
Checklist Items and Test Report Forms.

The Maryland participating laboratory indicated that section
65.a.3.1.(a) is confusing and recommended deleting the last half of the
paragraph.

The manufacturers were concerned about conducting a 5-point increasing
load test in conjunction with the shift test. For scales with a large
concentrated load capacity rating, this represents a lot of weight on
the scale for a long lime and increases the possibility of a zero change
due to creep. It was pointed out that Publication 14 recognizes that
consideration must be given for the length of time the load was on the
scale and possible temperature changes that may have occurred during the
test. *(The NIST Technical Advisor noted the above consideration is
located in Section 65a.4.5. Strain Load Test and will add a similar
statement to Section 65a.3. Shift Tests in the list of recommended
editorial changes to the 2003 Edition of Publication 14.)*

It was noted that the basic differences between the two proposals is
that the proposal from Ross Andersen includes the 5‑step increasing and
decreasing load while conducting the strain test. Publication 14, as
written in Section 65a.4., does not include the 5-step increasing load
test as part of the strain test.

The discussion shifted to the concern raised in the Ross Andersen
proposal regarding the use of weight carts because the position of the
fully loaded carts would place a large load in an area of the deck that
is smaller than the typical truck wheel span.

Many of the manufacturers indicated that there was no problem with using
weight carts in this manner. The maximum amount of weight down the
centerline of the scale using typical weight carts would be 20 000 lb to
30 000 lb. The manufactures have a greater concern with placing weight
carts end to end thereby increasing the test pattern, which results in
an inadequate test to the CLC rating of the scale.

The participating laboratories indicated that applicants should be made
aware of the test equipment provided by the labs selected to conduct the
evaluation. Applicants are already responsible for providing additional
weights and equipment necessary to conduct the evaluation. If the
applicant is concerned about the use of weight carts, then they should
be responsible for providing adequate test weights and equipment.

**Conclusion:** This subject will be carried over to the next meetings
of the NTEP Participating Laboratories and the NTETC Weighing Sector for
further clarification of the strain load test procedures and how to
respond to changes to zero when a test load is on the scale for an
extended period of time.

The Sector agreed to support the proposal developed by the participating
laboratories with the clarification recommended by the Maryland
participating laboratory and recommends the following amendments to
Publication 14, Chapter 1, Section 65(a)3.1. through 65(a).3.3. (page
DES-86):

1.  Shift Tests. Conduct at least two complete sets of shift tests over
    each section to at least 90 % of the [rated]{.underline}
    concentrated load capacity (CLC) of the scale. ~~This is to
    determine the repeatability of the scale. Determine the scale error
    at a minimum of five equally spaced test loads. Determine scale
    errors more points if desired. If two weight carts are used, they
    should travel along the paths the wheels of a vehicle would take
    when moving across the scale. Decreasing load tests are to be
    avoided when testing a section. Do not back a truck onto the scale
    in order to place weights on the inner sections. Conduct decreasing
    load tests after testing the sections to their maximum load and
    remove the weights from the scale. Do not exceed the CLC capacity.
    Distribute the load across the section.~~ [A single complete shift
    test is defined in steps a through d.]{.underline} [When analyzing
    the return to zero, consideration must be given for the length of
    time the load was on the scale and possible temperature changes that
    may have occurred during the test.]{.underline}

    a.  [The shift test will be conducted by loading one end section to
        the first of at least five test loads, moving the load to each
        section.]{.underline}

    b.  [Record the error moving the load to each section until the
        opposite end of the scale is reached, recording the error at
        each section and at each load.]{.underline}

    c.  [~~d.~~ Repeat the shift test procedure above in steps a, and b
        above for each weight increment until at least 90 % of the CLC
        is reached. While at the maximum test load, locate the test
        weights and record the errors at each section, mid-span between
        sections, and on modular scales, each on the right and left side
        of the module connection line located at each
        section.]{.underline}

    d.  [~~c.~~ Conduct a decreasing load lest on the section at the end
        of the scale where the weights can be reloaded.]{.underline}

[(**Note**) If possible, the first increment of test weights should
equal 500e. If weights cannot be conveniently applied that equal 500e,
the first load should equal just below 500e as nearly as possible. The
other tolerance breakpoints should be tested if possible.]{.underline}

> ~~65a.3.3. If a scale consists of modules that are connected together
> to comprise the weighbridge, conduct shift tests by placing the load
> so that it straddles the connection between the modules. Later,
> conduct at least one shift test on the scale with the test load placed
> first on one side of the connection line off the module then on the
> other side of the connection line.~~
>
> ~~65a.3.4. The results of shift tests must agree within the absolute
> value of the applicable maintenance tolerances and must be within
> acceptance tolerances~~
>
> 65a.4. Strain Load Test . . . .

[]{#__RefHeading___Toc62283061 .anchor}17. Publication 14, Section 7,
Footnote 1 on DES-3

**Source:** NTEP Participating Laboratories

**Background:** In footnote for Publication 14, Section 7 the phrase
"narrow range" is confusing and facilitates different interpretations of
device selection criteria. The current location of the footnote in (a)
makes it impossible to comply with (d) without having to submit a second
device. Additionally, there is a problem with the interpretation of the
language in the footnote. Is the capacity in the middle of the 2:1 range
of capacities submitted for test defined as a narrow range or is a
narrow range defined as a 4:1 range of capacities? If the range is 50,
100, and 200, do you test the 100. If the range is only 2:1, which scale
is tested, the 100 or the 200? -- Footnote is useless or does the
footnote supersede the specific requirements in d?

**Discussion:** There were several suggestions to delete the footnote.
However, it was noted that the problem of narrow range families of
scales still existed. One of the manufactures suggested establishing
upper limits to the range of capacities in defining a family of scales
similar to what they have experienced with other countries in addition
to better defining what is considered a narrow range and suggested the
ratio of capacities be limited to 10:1 when defining the limits to a
range of capacities.

There were also concerns among the participating laboratories about
eliminating the requirements for testing smallest division size (e~min~)
and largest capacity for families with a narrow range. Many of the
Sector members stated that it is not technically correct to test a
single device with two different capacities and e~min~ values because it
was likely the manufacturer would use different load cells and strengths
of steel for the different scales.

The Sector requested that the NTEP Director and NIST Technical Advisor
develop criteria and examples to clarify the existing language. The
criteria and examples were developed overnight and reviewed the next
day. The guidelines established that the highest and lowest capacities
must be submitted for evaluation if the range of capacities in the
family is 10:1 or less. Additional capacities must be submitted if the
range is wider than 10:1. A narrow range is defined as a 2:1 range of
capacities. Only one device is required for evaluation if conditions
7(b), 7(c), and 7(d) are met; otherwise, two devices shall be submitted.
There was general agreement on the amended criteria, footnotes and
examples.

**Conclusion:** The Sector recommended that Publication 14, Chapter 1,
Technical Policies B7 for Weighing Systems, Scales, or Load-Receiving
elements of 30 000 lb or Less be amended as follows:

7\. Weighing Systems, Scales or ~~Weighing~~
[Load-Receiving]{.underline} Elements of 30 000 lb Capacity or Less

> [7.1.]{.underline} The models to be submitted for evaluation shall be
> those having:

a.  The lowest capacity and the highest capacity[^1]

b.  The largest platform area for each of the capacities submitted

c.  The most resolution (highest number of scale divisions)

d.  The smallest scale division value (d).

> ^1^ ~~If the range of capacities is quite narrow (e.g., 50 lb, 100 lb,
> and 200 lb) and is a ratio of less than or equal to 2:1, it may be
> that only a device near mid-range needs to be submitted. If the range
> of capacities is extremely wide (e.g., 10 lb to 10 000), it may be
> necessary that a device near mid-range also be submitted.~~
>
> ~~Example: For a family of scales with a range of capacities from 500
> lb to 999 lb, the manufacturer could submit one model with a capacity
> of 750 lb. If the 750-lb model successfully passed full evaluation,
> the entire family could be covered by the CC. If the range for a
> family included capacities from 10 lb to 100 lb, the manufacturer
> would be required to submit three devices. The devices required to be
> submitted for evaluation would include the highest and lowest capacity
> as well as one near mid-range.~~
>
> [For the family, the range of capacities from lowest to highest shall
> not exceed a 10:1 ratio. To cover a wider range of capacities
> additional devices in the family will be tested. If the range of
> capacities is quite narrow and is a ratio of less than or equal to
> 2:1, it ***may*** be that only one device near the mid-range needs to
> be submitted. For example, a family of scales with a narrow range of
> capacities from 500 lb to 1000 lb, the manufacturer could submit one
> model near the midrange with a capacity of 750 lb. If no midrange
> device is available, the largest capacity device ***may*** be
> evaluated. In all cases, requirements found in items b. c. and d. must
> be met.]{.underline}
>
> [Examples: for a family from 10 lb to 100 lb, a 10 lb and a 100 lb
> would be evaluated]{.underline}
>
> [for a family from 10 lb to 1000 lb, a 10 lb, a 100 lb and a 1000 lb
> device would be evaluated]{.underline}
>
> [for a family of 30 x 0.01 lb and 50 x 0.01 lb, the 50 lb device would
> be evaluated]{.underline}
>
> [for a family of 30 x 0.01 lb and 50 x 0.02 lb, the 30 lb device would
> be evaluated]{.underline}
>
> [for a family of 15 x 0.005 lb and 30 x 0.01 lb, the 15 lb device
> would to be evaluated (meets b, c, & d)]{.underline}
>
> [for a family of 2500 x 0.5 lb and 5000 x 1 lb the 2500 lb device
> would be evaluated (meets b, c, & d)]{.underline}

2.  A CC will apply to all models that:

[]{#__RefHeading___Toc62283062 .anchor}18. Define Bench/Counter Scales

**Source:** NTEP Laboratories

**Background:** There is some confusion in the classification of
bench/counter scales and floor scales and the location of test load
while performing a shift test. Bench and counter scale shift tests are
conducted with a half capacity test load centered successively at four
points equidistant between the center and the front, left, back and the
right edges of the load-receiving element (N.1.3.1.). Shift tests on
other platform scales are conducted with a one-half capacity test load
centered, as nearly as possible, successively at the center of each
quadrant. Additionally, manufacturers frequently design a family of
scales that can be used on a bench or on the floor. Automatic zero
setting mechanism requirements are different based upon the
classification of the scale. Bench or counter scales have an automatic
zero-setting mechanism (AZSM) limitation of 0.6 e where "other than
bench or counter" scales have an AZSM limitation of 1.0 e.

**Discussion:** The Sector considered amending the current definition of
a counter scale that limits the capacity or recognize the differences in
the test pattern based upon the number of load bearing points and
Handbook 44 shift test paragraphs as shown below: (Note: If it is
determined that a capacity limitation is suitable for the definition,
the Canadian Technical Advisor would prefer that 100 kg (200 lb) be the
limit between bench and floor scale.)

> **counter scale.** One that, by reason of its size, arrangement of
> parts, and ~~moderate~~ nominal capacity [no greater than 100 kg (200
> lb)]{.underline}, is adapted for use on a counter or bench. Sometimes
> called "Bench scale" \[2.20\] (***Note:** There are single load cell
> load-receiving elements up to 600 lb capacities and there are four
> load cell load-receiving elements down to at least 25 lb capacities.*)
>
> **N.1.3.1. Bench or Counter Scales.** -- [For bench or counter scales
> with a single platform support, a]{.underline} ~~A~~ shift test shall
> be conducted with a half capacity test load centered successively at
> four points equidis­tant between the center and the front, left, back,
> and right edges of the load-receiving element. [Bench or counter
> scales with four platform supports, a shift test shall be conducted
> with a half‑capacity test load centered, as nearly as possible,
> successively at the center of each quarter of the load receiving
> element, or with a quarter-capacity test load centered, as nearly as
> possible, successively over each main load support.]{.underline}
>
> **N.1.3.8.  All Other Scales Except Crane Scales, Hanging Scales,
> Hopper Scales, Wheel-Load Weighers, and Portable Axle-Load
> Weighers.** - [For all scales with four platform supports,
> a]{.underline} ~~A~~ shift test shall be conducted with a
> half­-capacity test load centered, as nearly as possible, successively
> at the center of each quarter of the load­-receiving element, or with a
> quarter-capacity test load centered, as nearly as possible,
> successively over each main load support. [For scales with a single
> platform support, a ~~A~~ shift test shall be conducted with a
> half-capacity test load centered successively at four points
> equidis­tant between the center and the front, left, back, and right
> edges of the load-receiving element.]{.underline}

The Sector also considered the following alternative language submitted
by Bill West and Darrell Flocken:

> **counter scale.** [A scale]{.underline} ~~One~~ that, by reason of
> its size, arrangement of its parts and moderate nominal capacity [no
> larger than 200 lb (100 kg),]{.underline} is adapted for use on a
> counter[, table,]{.underline} or bench,. Sometimes called a "bench
> scale". [A counter scale will be a class III scale.]{.underline}
> \[2.20\]
>
> [**floor scale.** A scale designed to be placed on the floor or
> permanently installed in a pit. Nominal capacity will generally be
> larger than 200 lb (100 kg). Sometimes called a "platform scale". A
> floor scale may be either class III or III L, depending on the
> intended use, as long as all parameters for the intended class are
> met. \[2.20\]]{.underline}

The Sector also discussed the bench/counter scale terminology in NCWM
Publication 14 2002 Edition, Section 62.3, Shift Test Procedures (page
DES 77). The Sector agreed to remove the bench, counter and "other
platform scale" terminology and conduct the shift test based upon the
design of the scale (single load cell or more than one load support).

Further Sector discussions noted that the classification of
bench/counter scales as floor scales has lead to confusion about where
to place the test load when performing a shift test. Sometimes the same
scale could be placed either on a counter or bench resulting in
different shift test positions since paragraph N.1.3.1. describes test
load positions for bench/counter that are different than the test load
positions described in N.1.3.8. for other (platform) scales. Currently
NIST Handbook 44 for bench/counter scale shift tests are conducted with
a half capacity test load centered successively at four points
equidistant between the center and the front, left, back and the right
edges of the load-receiving element (paragraph N.1.3.1.). Shift tests on
other types of platform scales are conducted with a one-half capacity
test load centered, as nearly as possible, successively at the center of
each quadrant. Additionally, manufacturers have indicated that it is an
unfair test to place one-quarter scale capacity on the corners of a
single load cell scale when compared to placing one-quarter scale
capacity in the corners of a scale with four load supports.

**Conclusion:** The Sector agreed to submit a recommendation to the NCWM
S&T Committee amending the definition of counter scales and paragraphs
N.1.3.1. and N.1.3.8. as follows:

> **counter scale.** ~~One that~~ [A scale, that]{.underline} by reason
> of its size, arrangement of parts, and ~~moderate~~ nominal capacity
> [no greater than 100 kg]{.underline}~~, is adapted for use on a
> counter or bench~~. Sometimes called "bench scale" \[2.20\]
>
> **N.1.3.1. Bench or Counter Scales.** -- [For bench and counter scales
> with a single platform support, a]{.underline} ~~A~~ shift test shall
> be conducted with a half capacity test load centered successively at
> four points equidis­tant between the center and the front, left, back,
> and right edges of the load-receiving element. [For bench and counter
> scales with four platform supports, a shift test shall be conducted
> with a half‑capacity test load centered, as nearly as possible,
> successively at the center of each quarter of the load receiving
> element, or with a quarter-capacity test load centered, as nearly as
> possible, successively over each main load support.]{.underline}
>
> **N.1.3.8.  All Other Scales Except Crane Scales, Hanging Scales,
> Hopper Scales, Wheel-Load Weighers, and Portable Axle-Load
> Weighers.** - [For all scales with four platform supports,
> a]{.underline} ~~A~~ shift test shall be conducted with a
> half­-capacity test load centered, as nearly as possible, successively
> at the center of each quarter of the load­-receiving element, or with a
> quarter-capacity test load centered, as nearly as possible,
> successively over each main load support. [For scales with a single
> platform support, a ~~A~~ shift test shall be conducted with a
> half-capacity test load centered successively at four points
> equidis­tant between the center and the front, left, back, and right
> edges of the load-receiving element.]{.underline}

Additionally, the Sector recommends the following changes to NCWM
Publication 14, Section 62.3, page DES-77 as follows:

> ~~**Bench, Counter or Hanging Scales** **Other Platform Scales**~~
>
> ~~(one single load cell) (More than one single load cell)~~

**[Platform Scales With One Single Load Cell Platform Scales With More
Than One Load Support]{.underline}**

![](media/image2.wmf)

![](media/image3.wmf)

[]{#__RefHeading___Toc62283063 .anchor}19. Definitions of Hanging and
Crane Scales

**Source:** NTEP Participating Laboratories

Background: It has been recognized that there are some inconsistencies
in NIST Handbook 44 and NTEP Certificates of Conformance (CC) with
reference to crane scales. Table 3 footnote 3 indicates that a crane
scale can have a capacity as low as 500 lb. The only difference appears
to be that hanging scales can only be installed where suspended from
fixed supports and crane scales can only be installed in overhead
track-mounted cranes. CCs have been issued with capacities of scales
from 250 lb to 5000 lb, with both III and III L Accuracy Class
designations, and both hanging and crane scale device classifications.
The NIST Technical Advisor has observed large-capacity scales installed
on overhead track-mounted cranes that can just as easily be installed on
other types of cranes and supporting structures. The participating
laboratories are of the opinion that the condition of the scale support
(overhead crane, fixed support, etc.) should not be a factor in
determining device type.

**Discussion/Conclusion:** The Sector agreed to make the following
recommendation to the S&T Committee to remove the crane scale
definition, define hanging scale, remove the reference to crane scale
from Table 7a and paragraph N.1.3.8., and change remaining crane scales
references to hanging scale in NIST Handbook 44:

Add a definition of hanging scale and remove the definition of crane
scale, and amend Table 3 Parameters for Accuracy Classes footnote 3,
paragraph N.1.3.8. and paragraph T.N.3.4., and Tables 7a and 7b as
follows:

> [hanging scale. A scale designed to weigh loads while they are
> suspended from a hook on the scale or loads resting on a platter or
> platform that is suspended from the scale. Hanging scales may be any
> capacity and may be Class III or III L, whichever is appropriate for
> the intended use, as long as all parameters for the intended class are
> met. Sometimes called "crane scale."]{.underline}
>
> ~~crane scale. One with a nominal capacity of 5000 pounds or more
> designed to weigh loads while they are suspended freely from and
> overhead, track mounted, crane. \[2.20\]~~
>
> *^3^ The values of a scale division for ~~crane~~ [Class III L
> hanging]{.underline} and hopper (other than grain hopper) scales shall
> not be less than 0.2 kg (0.5 lb). The minimum number of scale
> divisions shall be not less than 1000.*
>
> N.1.3.8.  All Other Scales Except ~~Crane Scales,~~ Hanging Scales,
> Hopper Scales, Wheel-Load Weighers, and Portable Axle-Load Weighers.
>
> T.N.3.4. ~~Crane~~ [Class III L Hanging]{.underline} and Hopper (Other
> than Grain Hopper) Scales. -- The maintenance and acceptance
> tolerances shall be as specified in T.N.3.1. and T.N. 3.2. for Class
> III L, except that the tolerance for ~~crane~~ [Class III L
> hanging]{.underline} and construction materials hopper scales shall
> not be less than 1d or 0.1 % of the scale capacity, whichever is less.

+--------+-------------------------------------------------------------+
| *      |                                                             |
| *Table |                                                             |
| 7a.**  |                                                             |
|        |                                                             |
| **T    |                                                             |
| ypical |                                                             |
| Class  |                                                             |
| or     |                                                             |
| Type   |                                                             |
| of     |                                                             |
| Device |                                                             |
| for    |                                                             |
| We     |                                                             |
| ighing |                                                             |
| Operat |                                                             |
| ions** |                                                             |
+--------+-------------------------------------------------------------+
| Class  | Weighing Application or Scale Type                          |
+--------+-------------------------------------------------------------+
| I      | Precision laboratory weighing                               |
+--------+-------------------------------------------------------------+
| II     | Laboratory weighing, precious metals and gem weighing,      |
|        | grain test scales                                           |
+--------+-------------------------------------------------------------+
| III    | All commercial weighing not otherwise specified, grain test |
|        | scales, retail pre­cious met­als and semi-precious gem        |
|        | weighing, animal scales, postal scales, scales used to      |
|        | deter­mine laun­dry charges, [hanging,]{.underline} and       |
|        | vehicle on-board weighing systems                           |
+--------+-------------------------------------------------------------+
| III L  | Vehicle, axle‑load, livestock, railway track scales,        |
|        | ~~crane~~[hanging]{.underline}, hopper (other than grain    |
|        | hop­per) scales, and vehicle on-board weighing systems       |
+--------+-------------------------------------------------------------+
| IIII   | Wheel-load weighers and portable axle-load weighers used    |
|        | for highway weight enforcement                              |
+--------+-------------------------------------------------------------+
| Note:  |                                                             |
| A      |                                                             |
| scale  |                                                             |
| with a |                                                             |
| higher |                                                             |
| ac     |                                                             |
| curacy |                                                             |
| class  |                                                             |
| than   |                                                             |
| that   |                                                             |
| spe    |                                                             |
| cified |                                                             |
| as     |                                                             |
| \"typ  |                                                             |
| ical\" |                                                             |
| may be |                                                             |
| used.  |                                                             |
|        |                                                             |
| (A     |                                                             |
| mended |                                                             |
| 1985,  |                                                             |
| 1986,  |                                                             |
| 1987,  |                                                             |
| 1988,  |                                                             |
| 1992,  |                                                             |
| and    |                                                             |
| 1995)  |                                                             |
+--------+-------------------------------------------------------------+

+-------------------------------------+--------------------------------+
| **Table 7b.**                       |                                |
|                                     |                                |
| **Applicable to Devices not Marked  |                                |
| With a Class Designation**          |                                |
+-------------------------------------+--------------------------------+
| Scale Type or De­sign                | Maximum Value of d             |
+-------------------------------------+--------------------------------+
| Retail Food Scales, 50‑lb capacity  | 1 ounce                        |
| and less                            |                                |
+-------------------------------------+--------------------------------+
| Ani­mal Scales                       | 1 pound                        |
+-------------------------------------+--------------------------------+
| Grain Hop­per Scales                 | 10 pounds (not greater than    |
|                                     | 0.05 % of c­apa­city)            |
| Ca­paci­ty up to and incl. 50 000 lb  |                                |
|                                     | 20 pounds                      |
| Ca­paci­ty over 50 000 lb             |                                |
+-------------------------------------+--------------------------------+
| ~~Crane~~ [Hanging]{.underline}     | not greater than 0.2 % of      |
| Scales [-- Capacity 5000 lb and     | ca­pac­ity                       |
| over]{.underline}                   |                                |
+-------------------------------------+--------------------------------+
| Vehi­cle and A­xle‑­Load Scales Used   | 20 pounds                      |
| in Combination                      |                                |
|                                     | 50 pounds                      |
| Ca­paci­ty up to and in­clud­ing 200    |                                |
| 000 lb                              |                                |
|                                     |                                |
| Ca­paci­ty over 200 000 lb            |                                |
+-------------------------------------+--------------------------------+
| Railway Track Scales                | 20 pounds                      |
|                                     |                                |
| With wei­gh­b­eam                      | 100 pounds                     |
|                                     |                                |
| Au­to­mat­ic indi­cat­ing                |                                |
+-------------------------------------+--------------------------------+
| Scales with ca­paci­ties gre­ater than | 0.1 % capacity (but not        |
| 500 lb ex­cept oth­er­wise spe­ci­fied   | greater than 50 lb)            |
+-------------------------------------+--------------------------------+
| Wh­eel‑­L­oad Wei­gh­ers                 | 0.25 % capacity (but not       |
|                                     | great­er than 50 lb)            |
+-------------------------------------+--------------------------------+
| Note: For scales not specified in   |                                |
| this table, G-UR.1.1. and UR.1.     |                                |
| apply.                              |                                |
|                                     |                                |
| (Added 1985) (Amended 1989)         |                                |
+-------------------------------------+--------------------------------+

[]{#__RefHeading___Toc62283064 .anchor}20. List of Acceptable
Abbreviations and Symbols

**Source:** New York Participating Laboratory

**Background:** The participating laboratories reviewed a document
titled "General Letters, Symbols mathematical ‑ statistical Symbols, and
Markings for Legal Metrology" (German) provided by Darrell Flocken,
Mettler-Toledo.

Previous sector meetings discussed the German (CECIP) list but decided
that many of the symbols were not acceptable to the group.

Canada's list is an interpretation of the existing statute, and items
not on the list are not acceptable for viewing by the customer.

The NIST Technical Advisor has sent a copy of the document to the
participating weighing labs for their suggestions of acceptable symbols
and symbols that are not acceptable to be viewed by the customer.

The participating Measuring Device Laboratories are also concerned with
the use of symbols. Where practical, proposed lists of symbols should be
consistent among the Weighing Devices, Liquid Measuring Devices and
other applicable sections in NCWM Publication 14.

**Discussion/Conclusion:** The participating laboratories reported that
there has been no progress on this item. Darrell Tonini (SMA) reported
that the SMA Technical Committee was working on a similar document that
should be ready in time for the next meeting of the participating
laboratories. The NIST Technical Advisor will distribute the SMA
document as soon as it becomes available. The Sector Chairman requested
that the participating laboratories review and comment on abbreviations
in both documents and prepare a proposal for consideration prior to the
2003 meeting of the Weighing Sector. Examples of questionable symbols
and abbreviations that are part of an active evaluation will be reviewed
by participating laboratories and NTEP Director on a case-by-case basis
for a determination of the acceptability of the symbol or abbreviation.

**21. Shift Testing on Multi-Interval Scales**

**Source:** Ohio Participating Laboratory

**Background:** Publication 14, Section 31, page DES-49 does not address
shift tests on multi-interval scales. The participating laboratories
have been taught to treat each range as a separate scale for the
determination of tolerances. Publication 14 is unclear if shift tests
for multi-interval devices should be conducted at one-half capacity of
each weighing range where the shift test load might end up in the first
range; or, if the shift test load should be determined based on the
maximum capacity of the scale with the tolerance being based upon the
weighing range of the test load.

The NIST Technical Advisor reviewed both OIML and Handbook 44 documents
for references to shift tests. Neither document makes any special
references to shift test for multi-interval scales.

OIML R 76 paragraph 3.6.2.1. Eccentric loading (page 25) states:

3.6.2.1. Unless otherwise specified hereafter, a load corresponding to
one-third (1/3) of the sum of the maximum capacity and the corresponding
maximum additive tare effect shall be applied." There are no additional
references to eccentric loading with respect to multi-interval scales.

NIST Handbook 44 states:

> **N.1.3.1. Bench or Counter Scales.** - A shift test shall be
> conducted with a half-capacity test load centered successively at four
> points equidis­tant between the center and the front, left, back, and
> right edges of the load‑receiving element.

**Discussion**: Some of the Sector members indicated that it is possible
to have two test loads in the same range if testing is performed at ½
capacity of each range. Manufacturers also noted that multi-interval and
multiple range scales should be treated differently because a multiple
range scale with ***n*** ranges is essentially ***n*** number of scales
(where ***n*** represents the number of ranges). A multi-interval scale
with more than one minimum interval is still one scale. It is
technically incorrect for Publication 14 to state that a multi-interval
scale has ranges.

**Conclusion:** Darrell Flocken, Mettler-Toledo, volunteered to review
US/Canadian training manuals to identify differences between U.S. and
Canada. Additionally, they agreed to work with the NIST Technical
Advisor in developing Publication 14 shift test procedures for
multi-interval scales. The 2003 meetings of the participating
laboratories and Weighing Sector will review the procedures.

[]{#__RefHeading___Toc62283065 .anchor}22. Manual Multi-Interval Scale

**Source:** Ohio Participating Laboratory

**Background:** NCWM Publication 14, Chapter 1, Section 32, page
DES-51discusses the performance of manual multi‑interval scales. The
participating laboratories, the NIST Technical Advisor, and the NTEP
Director are unaware of any such devices and believe that the language
has been carried over from earlier editions where manual multi‑interval
scales were redefined as multiple range scales.

**Discussion/Conclusion:** The manufacturers reported that no devices of
this type are being manufactured. The NIST Technical Advisor reported
that this section was drafted prior to the adoption of the current
definitions of multi-interval and multiple range devices and that it was
intended for scales and indicators that had a physical switch that
toggled between two scales or one scale with different capacities and
minimum increments. The Sector agreed to recommend that Publication 14
Section 32 Manual Multi-Interval Scales (page DES --52) be deleted.

[]{#__RefHeading___Toc62283066 .anchor}23. Inconsistent Information on a
CC

**Source:** Maryland Participating Laboratory

**Background:** It was noted that features and options both metrological
and non-metrological are still being included on NTEP Certificates of
Conformance (CCs). For example, screen tare should be defined if it is
not a well-understood term and "memory recall" should describe what is
stored in memory (e.g., tare, gross, net, weights, unit prices, customer
information). Features on CCs that have not been successfully tested or
evaluated should not be listed on the CC. It was also noted that it is
important to list peripheral equipment in test conditions. This subject
was discussed during the 1992 Weighing Sector (item 6) but never made it
into the Pub 14. Section "Models" to be submitted.

The following is from the June 1992 Weighing Sector Agenda item 6:

> 6\. Identifying the Main Elements of a Scale on Certificates of
> Conformance
>
> ***Background and Discussion:*** It was proposed that CCs for Class
> III L scales should be written for complete scales (that is, list all
> of the main elements and components used during the evaluation) and
> that the CC should not be issued for just the weighing/load-receiving
> elements. It was also commented that the main elements and load cells
> used to comprise the complete system must be certified components.

NTEP issues separate CCs for main elements and load cells in order that
the manufacturer, installer, and user will have the flexibility of
choosing from among compatible main elements that have been evaluated by
NTEP. It was stated that this substitution can only be made if
information about the indicator used in the evaluation of the
weighing/load-receiving element is known; this, along with the use of
applicable formulas, would enable the customer and weights and measures
official to judge whether or not a given indicator is compatible for
substitution. This information has not been consistently identified on
the CC in the past.

The primary area of concern with this issue appeared to be that of
indicators (separable indicating elements) without NTEP CCs being used
during NTEP evaluations of large-capacity weighing/load-receiving
elements. It was commented that the load cell(s) used during an NTEP
evaluation is (are) required to have a valid NTEP CC and that the
indicator should also be required to have a valid CC. NTEP has not
always required the indicator used during an NTEP evaluation of a
weighing/load-receiving element to have a valid NTEP CC. If an indicator
without an NTEP CC performed worse than an indicator with an NTEP CC,
then the performance of the weighing/load-receiving element may not be
as good. If the manufacturer is willing to risk the results of the
evaluation by using a non-NTEP indicator, the NTEP laboratories feel
that the manufacturer should be permitted to make this choice. It is
expected that use of the weighing/load-receiving element with an
indicator that has an NTEP CC (as would be required by the weights and
measures official) should be better than the performance observed with
the non-NTEP indicator.

> ***Conclusions:* The Committee agreed that CCs should detail the main
> elements, load cells, and auxiliary devices used during an evaluation,
> including model designation and other significant parameters, under
> the \"Test Conditions\" portion of the CC. The Committee agreed that
> Certificates should not limit a scale system to the specific
> combination of load cell, indicator, and weighing/load-receiving
> element used during the type evaluation; substitutions (\"mixing and
> matching\") of metrologically equivalent components should continue to
> be recognized according to current NTEP policy. Each weights and
> measures jurisdiction should require that the individual main elements
> and load cells comprising a weighing system (the indicator, load
> cell(s), and weighing/load-receiving element) each have a valid NTEP
> CC and that the components are compatible and suitable for the
> installation. The Committee agreed that NTEP will continue to permit
> non-NTEP evaluated indicators and peripheral equipment to be used in
> the evaluation of a weighing/load-receiving element under certain
> conditions; however, the load cell used in electronic or
> electro-mechanical devices must have a current NTEP CC.**

**Discussion/Conclusion:** The Sector reviewed the above background
information and agreed that the language in the conclusion of the June
1992 Sector Summary would benefit field inspectors and NTEP evaluators.
The Sector reconfirmed that non-metrological accessories and peripheral
equipment (printing elements, video displays, and etc.) used as part of
the evaluation should be listed in the "Test Conditions" paragraph as
verification that metrological features such as indicated and recorded
representations have been evaluated. Additionally, the Sector
reconfirmed that the CC does not limit the use of non-metrological
peripheral equipment to those listed.

The Sector recommended that the following underlined language be added
to the NTEP Publication 14 Administrative Procedures in paragraph P.
Certificate of Conformance to facilitate consistent information included
on the Certificate of Conformance.

> [P.6. CCs should detail the main elements, load cells, and auxiliary
> devices used during an evaluation, including model designation and
> other significant parameters, under the \"Test Conditions\" portion of
> the CC. Only the standard features and options that have been
> evaluated will be included on the CC.]{.underline}

***Technical Advisor Note:** The NTEP Committee considered the above
recommendation during the 2003 NCWM Interim Meeting. The Committee did
not agree with the Weighing Sector and stated that the recommended
policy does not affect the administration of NTEP and should be
considered as a technical policy. The Committee recommends the
participating laboratories and Weighing Sector reconsider the item at
their next meetings. The NIST Technical Advisor will submit the
following addition to Publication 14., Chapter 1, NTEP Technical Policy
for Scales for consideration by the participating laboratories during
their next meeting:*

> B. Certificate of Conformance Parameters (Page DES-1)
>
> [Certificates of Conformance (CC) should detail the main elements,
> load cells, and auxiliary devices used during an evaluation, including
> model designation and other significant parameters, under the \"Test
> Conditions\" portion of the CC. Only the standard features and options
> that have been evaluated will be included on the CC.]{.underline}

The following guidelines apply.

**24. 85 to 240 VAC Voltage NTEP Submissions**

**Source:** Maryland Participating Laboratory

**Background:** Handbook 44 paragraph T.N. 8.3.1. Power Supply, Voltage
and Frequency currently states:

> **T.N.8.3.1. Power Supply, Voltage and Frequency.**
>
> \(a\) Weighing devices that operate using alternating current must
> perform within the conditions defined in paragraphs T.N.3. through
> T.N.7., inclusive, over the line voltage range of 100 V to 130 V or
> 200 V to 250 V rms as appro­priate, and over the frequency range of
> 59.5 Hz to 60.5 Hz.

More devices are being submitted to NTEP for evaluation with larger
ranges of voltages than those listed in the above paragraph. The
Participating Laboratories reviewed language used for Canadian
requirements. The consensus of the laboratories is to recommend the
Canadian language to amend Handbook 44 paragraph T.N. 8.3.1. Power
Supply, Voltage and Frequency. The following language has been submitted
by Canada for review.

> **[Maximum and minimum voltage specified]{.underline}**
>
> 1\. If the nominal voltage is not indicated on the marking plate, 117
> volts or 225 volts is deemed to be the [nominal voltage]{.underline}. 
> Then, the minimum and maximum voltages are 100 volts or 191 volts
> (-15 %) and 129 volts or 247.5 volts (+10 %) respectively.
>
> 2\. If the marking plate indicates a nominal voltage other than 117
> volts, the indicated voltage will be considered as the nominal
> voltage.  The minimum and maximum voltage will be calculated from the
> **nominal voltage indicated on the plate.**
>
> 3\. If a voltage range is indicated (i.e. 100 volts to 130 volts), the
> mid point of the range will be taken as the nominal voltage.  The
> device will be tested to the greater of: 1) the **nominal voltage
> -15 % / +10 %** or 2) the voltage range indicated on the plate.
>
> If a voltage range is indicated (i.e., 117 volts to 225 volts), the
> mid point of the range will be taken as the nominal voltage (i.e., 171
> volts).  The device will be **[tested to the greater]{.underline}**
> of: 1) the nominal voltage -15 % / +10 % (i.e., 145 volts and 118
> volts) or 2) the voltage range indicated on the plate (i.e., 117
> and 225 volts).
>
> Therefore, in this case the greater of the two is 117/225 volts and
> the device would (only) be tested at these extremes.
>
> 4\. If the device ceases to indicate weight values while the voltage
> is well within the -15 % / +10 % range limits, the tests will be
> performed at the limits of indication.

**Discussion:** The Sector agreed that testing over the entire range is
not supported by current NIST Handbook 44 language. The NTETC Weighing
Sector reviewed language used in Canadian requirements. The consensus of
the Sector is to recommend that Handbook 44 paragraph T.N. 8.3.1. Power
Supply, Voltage and Frequency be amended to eliminate specific voltage
ranges. Additionally, there is confusion regarding the frequency range
reference in the existing language. NTEP does not test for a change of
line frequency of plus or minus one half cycle because testing equipment
is very expensive. Manufacturers have stated that power supplies in
current weighing devices are capable of performing over a much larger
voltage and frequency range than specified in Handbook 44 because they
only manufacture or purchase one version of power supply that is
suitable for the worldwide marketplace.

**Conclusion:** The Sector agreed to make the following recommendation
to the NCWM S&T committee to amend NIST Handbook 44 Scales Code
paragraph T.N8.3.1.(a) Power Supply, Voltage and Frequency as follows:

> T.N.8.3.1. Power Supply, Voltage and Frequency.
>
> \(a\) Weighing devices that operate using alternating current must
> perform within the conditions defined in paragraphs T.N.3. through
> T.N.7., inclusive, over the line voltage range [as marked]{.underline}
> ~~of 100 V to 130 V or 200 V to 250 V rms as appro­priate, and~~ ~~over
> the frequency range of 59.5 Hz to 60.5~~ [at 60]{.underline} Hz. 

(***Note:** The Weighing Sector proposal was considered at the 2002
Annual Meeting of the Southern Weights and Measures Association,
Specifications and Tolerance Committee. The committee recommended
additional language be added to the proposal stating that a weighing
device shall perform at minus 15 % of the lowest stated nominal voltage
and at plus 10 % of the highest states nominal voltage.*)

[]{#__RefHeading___Toc62283067 .anchor}25. Audit Trail Information
During Power Failure

**Source:** Ohio Participating Laboratory

**Background:** During the evaluation of a device with an electronic
means of sealing, the laboratory noted that the device accepted the
updated calibration and configuration, but the event counters remained
at their previous count if there was a power loss while in the
calibration mode. The Participating Laboratories agreed that this could
be used fraudulently to avoid giving an indication that a calibration or
configuration adjustment had occurred and that NCWM Publication 14
should be amended to look for this condition.

**Discussion:** The participating laboratories reported that this and
similar conditions have been discovered on more than one type of device.
In another example, a scale appeared to accept calibration and
configuration changes. However, the final act of pressing a button to
accept the change was not performed. The scale appeared to be operating
with the updated parameters until power was turned off. The scale
reverted to the previously stored parameters and event counter
information.

One of the manufacturers was concerned about changes to the count
indicated on the event counter. Replacement of the event counters or a
master reset on a computer causes a change of audit trail information
that can be investigated by the field inspector. One of the manufactures
stated that it is unlikely that a non-resetable event counter can be set
to specific counts in order to match the counter that is being replaced.

Some of the participating laboratories indicated that a change in event
counters or a master reset of the computer is not the issue of this item
because there is a change in the audit trail information that can be
investigated by an inspector. The issue at hand is primarily the
intentional or unintentional change in calibration or configuration
parameters without advancing the information on the event counters.

The manufacturers understand that an event is when there is a change.
The reported problems are likely caused by programmers who did not
specify that sealable parameter settings and event counter information
should be stored in the event of a power failure (or provide an error
indication).

**Conclusion:** The Sector recognized that replacing printed circuit
boards may clear existing audit trail information and that the resultant
change in event counter information is in compliance with Handbook 44.
It is the responsibility of the inspector to investigate the change(s)
before enforcement action can be taken. Additionally, service and repair
companies would likely have information available to the inspector
documenting changes to calibration and configuration and even the
replacement of printed circuit boards and microprocessor chips affecting
event counter information.

The Ohio and California participating laboratories agreed to develop
language to verify audit trail change information during the event of
power interruptions and improper calibration procedures. The language
should be available for review and comment prior to the 2003 meeting of
the participating laboratories and Weighing Sector.

[]{#__RefHeading___Toc62283068 .anchor}26. Performance and Permanence
Testing

**Source:** NTEP Director and NIST Technical Advisor

**Background:** The NTEP Director has noted inconsistencies in the
following performance and permanence sections in Chapter 1:

> Section 62. Performance and Permanence Tests for Counter (Bench)
> Scales (including Computing Scales). Section 62.9.5.1. is not
> consistent with 62.9.10. in that the 500-lb maximum test load is not
> mentioned in 62.9.10.
>
> Section 63. Performance and Permanence Tests for Floor Scales,
> Paragraphs 63.2. Initial Review and 62.3 Initial Type Evaluation
> Permanence Test, and 63.4. Subsequent Type Evaluation Permanence Test.
> Paragraph 62.4 can be misinterpreted as meaning that if a device
> fails, the scale is then adjusted and retested as an initial test in
> 63.2 and test ed 20-30 days later as a subsequent test. The
> terminology used should be consistent. Similar concerns are noted in
> paragraphs 65.5.5.
>
> Section 65 (x). Performance and Permanence Tests for . . . Vehicle
> Scales. . ., paragraphs 65(x).5.1., 65(x).7, and 65(x)7.6. Paragraph
> 65x.5.1. states that a minimum of 40 000 lb of known test weights are
> required for the subsequent type evaluation field permanence test and
> appears to be in conflict with 65x.7.6. that states that the device
> will be tested to at least the CLC on the second test. Testing to the
> CLC does not appear to be supported in doing research into past Sector
> Summaries.

**Discussion/Conclusion:** The NIST Technical Advisor and NTEP Director
will make the referenced editorial corrections and submit the amended
language to the Sector and the NTEP Committee prior to publishing the
2003 edition of Publication 14.

[]{#__RefHeading___Toc62283069 .anchor}27. Center Dump Option on Vehicle
Scales

**Source:** NTEP Director

Background: Clarification has been requested regarding the acceptability
of a center dump option on mechanical vehicle scales. The following is
from the June 1991, November 1996, and 1997 Sector Summaries:

> (June 1991)

C. Several manufacturers have modified the design of a lever system by
moving the backbone lever that runs along the longitudinal centerline of
the scale to outside the edge of the scale (see attachment). The
manufacturers have contended that this change does not require another
type evaluation, claiming the design has not changed significantly. The
NTEP policy has been to require these scales to undergo another type
evaluation. The NTEP Technical Committee is requested to review this
issue as part of the technical policy.

NTEP requires that scales of different designs must be evaluated
separately. NTEP laboratories have had to make judgments as to what
comprise significant modifications to designs that necessitate
additional NTEP testing. For example, NTEP considers a load‑cell‑based
scale with the main girders of the weighbridge under the platform under
the path of tires to be significantly different from a scale with the
main girders forming side rails for the platform. The specific issue
being addressed by this agenda item is the design of mechanical lever
systems where the location of the transverse lever is changed. The
following figure illustrates the variations (*figure not available*).

The Committee agreed that the design differences in examples B and C
were relatively minor and that the two designs were sufficiently similar
so that one type evaluation could cover both designs. However, the
Committee agreed that the design illustrated in example A required the
weighing/load‑receiving element to be engineered differently.
Consequently, that design had to be evaluated separately. Hence, based
on G‑S.1. and this decision for type evaluation, the design illustrated
in example A shall have a different model designation since a separate
type evaluation is required. In the case of examples B and C, the same
model designation may be used; but the specific design that was
evaluated must be described in the test conditions of the NTEP
Certificate. The Committee will continue to rely on the judgment of the
NTEP laboratories when a new Type evaluation is required.

> 4\. Modification of Type (1996)

Dump Option

> ***Conclusion:* The Sector heard arguments for and against allowing
> the modification of an NTEP approved scale with a dumping mechanism
> without additional testing. Some believed that this would be
> considered a modification of type and needed additional testing.
> Others were unsure what effect, if any, this would have on the scales
> performance. Still others believed that this was not a modification of
> type and should be allowed. No clear agreement or disagreement was
> reached in the discussion. The Sector may want to revisit this at a
> later date. The Sector also asked for input from Scale Manufacturers
> Association's (SMA) Technical Committee.**

Replacement of Concrete Decks with New Steel Decks

> ***Conclusion:* The Sector agreed that changing deck material (for
> example, concrete vs. steel) on a scale is a modification of type in
> some designs of scales and, in those designs, both types of decks
> would have to be tested to include both types on the Certificate of
> Conformance. The Sector noted that there are some designs where
> replacement of the deck material would not affect the performance of
> the scale.**
>
> b\) Adding a dump option (1997)
>
> ***Background and Discussion:***
>
> b\) At the last Sector meeting the issue of adding a dump option was
> not resolved. The SMA Technical Committee was asked to provide input.
> The sector has been asked to reconsider this item (Attachment;
> Carry‑over Item I b)
>
> ***Discussion:*** Comments were made that this is a design
> consideration, not a performance consideration. Field officials have
> expressed concern that the addition of this option may, over time,
> cause performance problems with the repeated lifting and lowering of
> the deck. The Sector generally agreed that, if it is a new device and
> new technology, it might require testing. However, since the option
> does require field verification, there is no reason to require an
> additional permanence test.
>
> ***Conclusion:* The Sector agreed that a dump‑type option could be
> added to a scale with an existing NTEP CC without the need to perform
> additional testing. With a dump option the original load-receiving
> element (deck) is replaced with the dumping mechanism. The original
> structural weighbridge is still in place and keeps the load-receiving
> elements (levers or load cells) in place.**

**Discussion:** The past discussions have dealt primarily with
mechanical scales with a deck that lifts or tilts off of the weighbridge
to dump the commodity.

A member of the railroad industry commented that an improvement to a
railway track scale changes the structure of the scale. Many railroads
require that existing railway track scales must be brought up to all
railroad requirements when these modifications or improvements are made.
This sector member considers a center-dump option a modification of type
that requires new evaluation. Any proposal to permit such a modification
without additional evaluation should apply only to vehicle scales.

Additionally, there are low profile railway track scales that do not
meet AREMA standards and are allowed to use the deck plate for
structural integrity. Although changes can be done properly without
affecting the structural integrity of the scale, that does not mean
changes will always be done properly. Therefore, a jurisdiction should
verify the changed device complies. Typically, the jurisdictions do not
look at the construction or may not have the expertise to evaluate
structural changes.

Some of the manufactures commented that modifications should be
evaluated and certified by a scale engineer according to Handbook 44
Scales Code paragraph UR.4.3. Scale Modification. One of the Sector
members stated that if guidelines are not documented in Publication 14
and the NTEP Director is not familiar with a type of modification, then
further testing may be required depending upon the NTEP Director,
participating laboratory, or field official that is being asked to make
the determination.

The Sector was directed to the existing diagrams in Publication 14
(pages DES-8 and DES-9) that dealt with large capacity scale platforms
and whether or not additional evaluations would be required if the
manufacturer requested a change to the deck type. Previous Sectors
agreed that no additional evaluations would be required for a change in
deck material if the deck were not part of the support structure of the
weighbridge. Additional evaluation for modification of deck types would
be required if the deck is part of the weighbridge support structure.

The Sector was asked if the same rationale could be used to determine if
additional evaluations would be required for a "dump through" feature.
Many Sector members agreed that this rationale would be a useful
guideline for use by the NTEP Director, participating laboratories and
field officials. Some of the Sector members stated that the "dump
through" feature or option should however be listed on the Certificate
of Conformance for the device. Some of the manufacturers disagreed with
this stating that it is up to the manufacturer to determine if a
modification to the type is metrologically significant.

The Sector also agreed that changes to the position of the lever or load
cells would be considered a metrologically significant modification that
would require additional type evaluation testing.

**Conclusion:** There was no clear consensus on this item however, the
majority of the Sector voting members voted to recommend that the
following language be added to Publication 14, Chapter 1, NTEP Technical
Policy for Scales, Section E. Modification of Type (6 yes, 3 no, 5
abstain):

> [7. Adding a dump-through option/modification, without modifying the
> lever system or load cell placement, to vehicles scales where the
> vehicle support primarily comes from the beams and girders on a scale
> with a combination steel and concrete weighbridge or all steel
> weighbridge construction, does not require evaluation for an existing
> CC to apply, however, the modification option must be listed on the
> CC.]{.underline}
>
> [8. Adding a dump-through option/modification, to vehicle scales with
> composite construction; unitized steel deck (vehicle support primarily
> come from the scale deck) requires an evaluation to be listed on a new
> or existing CC.]{.underline}

**Note.** One of the manufacturers voting against the proposed language
commented that changes to create a dump scale fall under the structural
design requirements in the rail codes. Modifications to create a dump
scale are not typically done to a truck scale. The manufacture
acknowledges that NCWM comes to the manufacturers for general guidance.
The manufacturer further stated that the best policy is to rely on the
original equipment manufacturer to report metrologically significant
changes.

[]{#__RefHeading___Toc62283070 .anchor}28. ECR Loyalty Programs

**Source:** Maryland Participating Laboratory

**Background:** From the 1998 Weighing Sector Meeting:

> *NTEP continues to receive questions as to the proper method for
> presenting information relative to "frequent shopper" discount
> programs on customer receipts. NTEP has also heard complaints related
> to the accuracy of price computations on some of the receipts. The
> Sector was asked to provide guidance to the NCWM for the development
> of possible requirements or regulations in this area.*
>
> **Conclusion:** The Sector recognized that some issues related to
> frequent shopper programs are under the purview of the Sector (those
> functions related to the interface with the point-of-sale scale) and
> some are under the purview of the Laws and Regulations Committee
> (those functions related to method of pricing and printing of package
> labels). The Sector acknowledged the need for input from other groups.
> Dennis Krueger, NCR, agreed to contact representatives from FMI (Food
> Marketing Institute) to investigate how the Sector might work with
> representatives from FMI on this issue. Dennis will work with Steve
> Cook, (formerly from CA), to bring back recommendations to the Sector
> on how to proceed further with this issue.
>
> This issue has not been resolved. Nearly every major supermarket chain
> has some form of member discount program. The NTEP labs and the field
> inspector need a uniform method of examining this feature.
>
> Handbook 44 indirectly addresses the method of recording member
> discount prices:
>
> Section S.1.8.4. of Handbook 44 notes:
>
> S.1.8.4. Recorded Representations, Point-of-Sale Sys­tems. - The sales
> information recorded by cash registers when interfaced with a
> load-receiving element shall contain the following information for
> items weighed at the checkout stand:

a.  the net weight,^1^

b.  the unit price,^1^

c.  the total price, and

d.  the product class or, in a system equipped with price look-up
    capability, the product name or code number.

> Unit price is defined in Handbook 44 as:
>
> **unit price.** The price at which the product is being sold and
> expressed in whole units of measurement.\[3.30\]
>
> (Added 1992)
>
> The two sections noted above indicate that the unit price noted on the
> receipt must be the price at which the sale was determined. Noting an
> original unit price for an item and a total discount for the
> transaction does not meet HB 44.
>
> ex: regular price is \$3.00/ lb and the member price is \$1.50 lb
>
> 1.00 lb @ 3.00/lb 3.00
>
> -1.50

**Discussion:** The Sector reviewed the language recommended by the
earlier weighing sector and considered making the following
recommendation to the NCWM Specifications and Tolerances Committee:

To clarify Handbook 44, amend the footnote to paragraph S.1.8.4. as
follows:

> S.1.8.4 (a) the net weight ^1^
>
> S.1.8.4 (b) the unit price ^1^
>
> ^1^ Weight values shall be identified by kilogram, kg, grams, g,
> ounces, oz, pound, lb, or the sign "#." For devices interfaced with
> scales indicating in metric units, the unit price may be expressed in
> price per 100 grams. [If the system utilizes a member discount
> feature, the unit price at which the product is being sold must be
> recorded on the receipt. The net weight of pre-weighed items shall not
> be altered by the system.]{.underline}

The Sector also reviewed the proposed language for incorporation into
NCWM Publication 14 submitted by the Maryland Participating Laboratory.

The Sector members agreed that manipulating weights facilitates fraud.
Additionally, NIST Handbook 130 defines net weight as the gross weight
minus the weight of the packaging material or container and does not
permit the manipulation of a legal measurement. Unintentional
manipulation of the original weight (due to mathematical rounding) can
also occur when discounts are given because net weights are determined
by dividing the original total price by the original unit price.

A member of the Measuring Sector stated that there are similar concerns
with discount programs, but the proposed language for Publication 14
would not solve the problems associated with liquid measuring devices

Several Sector members supported the language proposed for Publication
14, stated that it is sufficiently backed up by Handbook 44, and that no
changes to Handbook 44 are required for this item.

One of the manufacturers agreed with the proposed language for
Publication 14. However, the following note should be deleted because is
may be confusing and is not appropriate for a national document:

> "Please note that this feature may not be acceptable in some
> jurisdictions. The suitability of this feature is determined by the
> enforcement policy of each jurisdiction."

**Conclusion:** The Sector agreed to recommend that the following
[underlined]{.underline} language be added to Publication 14, Chapter 6,
Section 12 (new):

> **[Section 12 of Electronic Cash Register Interfaced with
> Scales]{.underline}**
>
> **[Member Discount Program Feature]{.underline}**
>
> **[Code References: G-S.2, G-S.5.1, G-S.5.5, and
> S.1.8.4]{.underline}**
>
> [A \"member discount\" feature applies discounts to applicable items
> in the store. To receive the discount(s), the customer must be
> enrolled in the program and must present their member number before
> the total sales transaction is tendered. This feature applies to
> weighed and non-weighed items.]{.underline}
>
> [Because the feature has a significant potential to facilitate fraud
> if not properly designed, the following type evaluation criteria must
> be met.]{.underline}
>
> [Check all that apply:]{.underline}
>
> [Discounted weighed transactions]{.underline}
>
> [Discounted non-weighed transactions]{.underline}
>
> [Original net weight (count) and original total price determined at
> the POS]{.underline}
>
> [Original net weight (count) and original total price determined at
> the pre-packaging scale]{.underline}

  -------------------- ----------------------------------------------- -----------------
  [12.1]{.underline}   [The net weight shall not be                    **Yes** **No**
                       altered.]{.underline}                           **NA**

  [12.2]{.underline}   [The total price of all weighed items shall be  **Yes** **No**
                       determined using the original net weight        **NA**
                       determination.]{.underline}                     

  [12.3]{.underline}   [All calculations shall be rounded to the       **Yes** **No**
                       nearest cent.]{.underline}                      **NA**

  [12.4]{.underline}   [The receipt shall be clear, easily understood  **Yes** **No**
                       when reading from left to right.]{.underline}   **NA**

  [12.5]{.underline}   [The receipt shall be mathematically correct    **Yes** **No**
                       for all calculations.]{.underline}              **NA**

  [12.6]{.underline}   [If the discount is based on a percentage or a  
                       fixed cents off of the total price, the receipt 
                       shall indicate the following:]{.underline}      

                       [8.6.1 The original unit price and total        **Yes** **No**
                       price.]{.underline}                             **NA**

                       [8.6.2 The monetary discount, or the new total  **Yes** **No**
                       price.]{.underline}                             **NA**

                       [8.6.3 The net weight (If                       **Yes** **No**
                       applicable).]{.underline}                       **NA**

                       ***[Note: If the Member Discount number is      
                       entered before the item to be discounted (or    
                       the receipt is not generated until the          
                       completion of the customer transaction), the    
                       original unit price and the original total      
                       price are not required]{.underline}***          

  [12.7]{.underline}   [If the discount is based on a percentage or a  
                       fixed cents off of unit price reduction (ex. \$ 
                       .10/lb discount off the original total price),  
                       the receipt shall indicate the                  
                       following:]{.underline}                         

                       [12.7.1 The original unit price and total       **Yes** **No**
                       price,]{.underline}                             **NA**

                       [12.7.2 The unit price discount,]{.underline}   **Yes** **No**
                                                                       **NA**

                       [12.7.3 The monetary discount or the new total  **Yes** **No**
                       price, and]{.underline}                         **NA**

                       [12.7.4 The net weight (If                      **Yes** **No**
                       applicable).]{.underline}                       **NA**

                       ***[Note: If the Member Discount number is      
                       entered before the item to be discounted (or    
                       the receipt is not generated until the          
                       completion of the customer transaction), the    
                       original unit price and the original total      
                       price are not required.]{.underline}***         

  [12.8]{.underline}   [If the discount is based on a discount unit    
                       price, the receipt shall indicate the           
                       following:]{.underline}                         

                       [12.8.1 The original unit price and the         **Yes** **No**
                       original total price,]{.underline}              **NA**

                       [12.8.2 The discount unit price and the         **Yes** **No**
                       discount total price, and]{.underline}          **NA**

                       [12.8.3 The net weight (If                      **Yes** **No**
                       applicable).]{.underline}                       **NA**

                       ***[Note: If the Member Discount number is      
                       entered before the item to be discounted (or    
                       the receipt is not generated until the          
                       completion of the customer transaction), the    
                       original unit price and the original total      
                       price are not required.]{.underline}***         

  [12.9]{.underline}   [If the total price, of a random weight         **Yes** **No**
                       pre-packaged item, is determined by weight and  **NA**
                       the final calculation is made at the POS        
                       system, the information that the calculation is 
                       based on must be provided on the                
                       receipt.]{.underline}                           
  -------------------- ----------------------------------------------- -----------------

[]{#__RefHeading___Toc62283071 .anchor}29. Range of IZSM on Indicating
Elements

**Source:** Maryland Participating Laboratory

**Background:** Electronic indicating elements have been submitted with
an Initial Zero-Setting Mechanism (IZSM) of 100 % of the configured
capacity of the indicator. When the participating laboratories inform
the manufacturer that the indicator would have to be tested up to the
maximum IZSM range with a load-receiving element, they have always
reduced the IZSM range.

NTEP does not test load-receiving elements up to 200 % of their
configured capacity. Therefore NTEP should not allow an indicating
element to have an IZSM range up to 100 % of the capacity of the
load-receiving element used during the evaluation of the indicator. The
NIST Technical Advisor notes that load-receiving elements, from bench
scales to railroad track scale load-receiving elements have not been
submitted or tested with an IZSM feature unless the submission was to be
treated as a complete scale with a specific indicating element.
Therefore, the possibility exists that many load-receiving elements,
that consist of only load cell support structures may not comply with an
indication element configured with IZSM enabled. Should electronic
indicating elements have IZSM? If so, how much? Should IZSM be limited
to just complete scales?

The Sector reviewed the following Canadian requirements.

> **LG-15.04 IZSM Range (Maximum Range of Initial Zero-Setting
> Mechanism)**
>
> The load-receiving element to which an electronic indicator tested and
> approved separately will be interfaced will not have been tested up to
> 200 % of Max. Consequently, the maximum Initial Zero‑Setting Mechanism
> range of electronic indicators must be limited to 20 % of Max.
>
> An electronic indicator tested and approved separately is deemed to
> comply with the requirements when the total range of the Initial
> Zero-Setting Mechanism (absolute value of -ve portion of the range
> plus the +ve portion of the range) does not exceed 20 % (or can be set
> to a maximum of 20 % and sealed) of the DUT\'s maximum capacity (Max);
> The IZSM range of a complete electronic device may exceed 20 % of Max
> if the device performs within tolerances when the IZSM is set at the
> minimum and maximum points of its range.
>
> When the IZSM range is limited to 20 %, performance tests are
> conducted once: at the maximum IZSM setting. When the IZSM range
> exceeds 20 %, certain performance tests are conducted twice: at the
> minimum and at the maximum setting of the range. See description of
> the performance tests in Part 3.

Some of the manufacturers stated that IAZM on separable indicating
elements is just an electronic starting point and that there should be
not performance difference settings up to 100 %. The manufacturer of the
load-receiving element has the responsibility to make their device
perform with the maximum live and dead load (i.e. a 100 lb
load-receiving element with a 500 lb load cell).

Other Sector members stated that if the IZSM is adjustable to 20 % or
less on an indication element, no additional testing should be required.
If the IZSM is adjustable beyond 20 %, applicant shall provide equipment
(load-receiving element, a switch box, etc) to facilitate testing up to
the IZSM limit.

Many of the manufacturers were concerned that prohibiting or limiting
the size of IZSM on separable indicating elements may restrict the
modular "mix and match" approach because the manufacturer of the
indicating element may not know the amount of IZSM permitted on devices
the indicating element will be interfaced to.

Canada reported that IZSM above 20 % is permitted on indicating
elements. However, Canada will test all IZSM above where the IZSM can be
adjusted above 20 %.

One of the manufacturers suggested that the Sector review European
Cooperation in Legal Metrolog (WELMEC) 2.1 Guide for Testing Indicators.

**Conclusion:** The Sector discontinued discussion due to lack of time.
The Sector has been requested to review US/Canadian checklist
requirements for possible harmonization and WELMEC 2.1 Guide for Testing
Indicators - (Non-Automatic Weighing Instruments)
(<http://www.welmec.org/publications/2-1.asp>). This item will be
carried over to the next meeting of the Weighing Sector.

[]{#__RefHeading___Toc62283072 .anchor}30. IZSM Test Procedures

**Source:** Maryland Participating Laboratory

**Background:** The following is from the 1998 Weighing Sector Report:

> ***Background:*** At the June 1998 meeting of the NTEP Laboratories
> the participants were asked to review a procedure for testing the
> initial zero-setting mechanism (IZSM) of a scale in the field. At this
> time, there also is no procedure in Publication 14 for testing this
> feature during an evaluation.
>
> During a September 1998, Asia Pacific Legal Metrology Forum (APLMF)
> R76 training class a procedure was presented for testing IZSM. That
> procedure has been revised and adapted for possible inclusion in
> Publication 14 as outlined in the Appendix G below. Unless the Sector
> objects, the procedure was proposed to be included in the next edition
> of Publication 14. (See Attachment below)
>
> ***Discussion:*** The Sector Discussed the proposed procedure and
> pointed out that the last sentence needs to be changed from "determine
> if the device complies" to "indicates that additional testing should
> be performed". One of the labs indicated that some field officials
> have a difficult time determining if a device has an IZSM,
> particularly when the "on/off" switch is used to activate the zero
> setting mechanism. The proposed procedure can be used for both lab and
> field evaluations.
>
> ***Conclusion:*** The Sector agreed that the laboratories would (will)
> begin using the procedure included in Appendix G. The procedure will
> be incorporated in Publication 14. The last sentence of the draft
> procedure will be changed from \"determine if the device complies\" to
> \"indicates that additional testing should be performed.\" The
> laboratories are asked to provide feedback to the Sector on any
> problems they encounter with the procedures.

The 1998 Weighing Sector proposed the following:

> **1. Change to Handbook 44 Scales Code**
>
> **S.2.1.5. Initial Zero-Setting Mechanism. -**
>
> \(a\) Scales of accuracy classes I, II, and III may be equipped with
> an initial zero-setting device.
>
> \(b\) [Complete Scales.]{.underline} An initial zero-setting mechanism
> shall not zero a load in excess of 20 % of the maximum capacity of the
> scale unless tests show that the scale meets all applicable tolerances
> for any amount of initial load compensated by this device within the
> specified range.
>
> *[(c) Separable Indicating Element Covered by a Separate CC. The
> maximum Initial Zero-Setting Mechanism range]{.underline}* *[(absolute
> value of the maximum load that can be removed from the dead load plus
> the maximum load that can be added to the dead load) of electronic
> indicators must be limited to 20 % of the scale
> capacity.]{.underline}*
>
> **2. Changes to PUB 14 (2002 edition, page DES-61)**
>
> **40. Zero Indication**
>
> **Code References: S.1.1., S.1.1.1., [S.2.1.5]{.underline}, and
> G-S.5.1.**
>
> A digital electronic scale must indicate or record a zero balance
> condition. An out-of-zero-balance indication on both sides of zero is
> required. The zero balance indication may be a continuous digital zero
> indication or indicated by some other means, provided the scale either
> automatically inhibits the scale operation or returns to a digital
> weight indication when an out-of-zero-balance condition exists. The
> alternative zero indication must be defined on the front of the
> device.
>
> A digital zero balance indication shall represent zero within ±0.5
> scale division (±0.5 d). A digital indicating scale shall either
> automatically maintain a \"center-of-zero\" condition to ±0.25 d or
> less (through AZSM) or have a supplemental center-of-zero indicator
> that defines the zero-balance condition to ±0.25 d or less. The center
> of zero requirement applies to the gross load zero, but the center of
> zero indication may also be operational at the net load zero.
>
> Neither a + or - sign may appear with the zero indication. Appropriate
> indications for the zero balance and out-of-zero balance conditions
> are specified.
>
> If the scale is equipped with an initial zero-setting mechanism
> (IZSM), then the scale must be tested for compliance with the
> influence factors with the maximum load zeroed through the IZSM.
>
> ~~This is mandatory if the range~~ [When the IZSM range (absolute
> value of the maximum load that can be removed from the dead load plus
> the maximum load that can be added to the dead load) exceeds 20 % of
> the scale capacity, performance tests are conducted at the maximum
> setting of the range.]{.underline}
>
> [The IZSM range of a complete electronic scale may exceed 20 % of
> capacity if the device performs within tolerances.]{.underline}
>
> [When the IZSM range is 20 %, performance tests are conducted once: at
> the maximum IZSM setting.]{.underline}

+-----+-----------------------------------------------+----------------+
| [40 | Is the scale equipped with an IZSM?           | **Yes** **No** |
| .1] |                                               | **NA**         |
| {.u |                                               |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | [If yes, then what is the range of the        | **Yes** **No** |
|     | IZSM?]{.underline}                            | **NA**         |
+-----+-----------------------------------------------+----------------+
| [40 | [The maximum Initial Zero-Setting Mechanism   |                |
| .2] | range of an electronic indicator tested and   |                |
| {.u | approved separately:]{.underline}             |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | [40.2.1]{.underline} [does not exceed 20 % of | **Yes** **No** |
|     | the scale capacity]{.underline}               | **NA**         |
+-----+-----------------------------------------------+----------------+
|     | [40.2.2]{.underline} [can be set to a maximum | **Yes** **No** |
|     | of 20 % and sealed]{.underline}               | **NA**         |
+-----+-----------------------------------------------+----------------+
| 4   | The scale defines zero within ±0.5 d by a     | **Yes** **No** |
| 0.~ | continuous zero indication.                   | **NA**         |
| ~1~ |                                               |                |
| ~.3 |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | Record the type of weight unit, (e.g., lb/kg) |                |
|     | selection.                                    |                |
|     |                                               |                |
|     | EXTERNAL INTERNAL N/A                         |                |
+-----+-----------------------------------------------+----------------+

Record the actual zero width in d (note whether avoirdupois, metric, or
other unit).

AVOIRDUPOIS d

METRIC d

OTHER UNITS: Specify Unit ; d

  ------------ ----------------------------------------------- -----------------
  40.~~24~~    For indicators without a continuous zero        **Yes** **No**
               indication, an automatic means inhibits the     **NA**
               weighing operation or returns the device to a   
               continuous digital indication when the scale is 
               in an out-of-balance condition.                 

               ***Note:** See also Code Reference G-S.6.       
               elsewhere in this checklist pertaining to       
               marking of indications, and see Code Reference  
               G-S.5.2.2., and S.1.2. elsewhere in this        
               checklist pertaining to identification of the   
               zero indication when a sleep mode is used.*     

  40.~~3~~.5   A + or - sign must not appear when the scale is **Yes** **No**
               indicating zero in any of the available weight  **NA**
               units.                                          

  40~~.4~~.6   The device automatically maintains the \"center **Yes** **No**
               of zero\" to ±0.25 d, or                        **NA**

  40.~~5~~.7   If the device does not automatically maintain   **Yes** **No**
               the \"center of zero\", then there is a center  **NA**
               of zero indicator that defines zero within      
               ±0.25 d scale division.                         

  40.~~6~~.8   If provided, the \"center of zero\" indicator   **Yes** **No**
               is inhibited at all displayed positive weight   **NA**
               values other than zero.                         
  ------------ ----------------------------------------------- -----------------

**Conclusion:** The Sector did not have time to review this item and it
will be carried over until the next meeting of the Weighing Sector. The
Sector is requested to review the above recommendation from the 1997
Weighing Sector. If there are no major discussions on this item or
significant updates to the proposed language, the Sector will consider
recommending the above [underlined]{.underline} language into NCWM
Publication 14, Weighing Devices Technical Policy, Checklist, and Test
Procedures.

[]{#__RefHeading___Toc62283073 .anchor}31. Weight Accumulators

**Source:** Maryland Participating Laboratory

**Background:** The following is from the 1997 Weighing Sector final
Summary:

> **Source:** NTEP Weighing Labs
>
> **Background:** Publication 14 does not adequately address the new
> features that labs are seeing on scales with weight accumulation
> features.
>
> **Recommendation:** The Sector was asked to review language in the
> attachment to item 5 (see below) submitted by the NTEP labs for
> addition to Publication 14 under the section on scales with weight
> accumulation features.
>
> **Conclusion:** The Sector agreed to add the proposed procedure and
> criteria in the attachments to Publication 14.

The Maryland Participating Laboratory proposed the following language:

> **[Weight Accumulation]{.underline}**
>
> [This section is not applicable to automatic bulk weighing systems and
> automatic weighing systems. The weight accumulation feature adds
> and/or subtracts multiple weighments. Please note that total weight
> accumulators may not be acceptable in some jurisdictions and is not
> acceptable in all applications. The suitability of this feature is
> determined by the enforcement policy of each jurisdiction. Because the
> accumulation feature has a significant potential to facilitate fraud
> if not properly designed, the following type evaluation criteria must
> be met.]{.underline}
>
> [Identify the methods of weight accumulation:]{.underline}

-   [Manual Total: The operator must enable the mechanism for each
    weighment added to (or subtracted from) the accumulated
    total.]{.underline}

-   [Auto Total: Once this mode is enabled, the device will
    automatically add each weighment to the accumulated total. The auto
    total feature may not be acceptable in all jurisdictions and is not
    acceptable in all applications. The auto total feature is not
    acceptable when the loading or unloading of the device is likely to
    activate the auto total feature.]{.underline}

+-----+-----------------------------------------------+----------------+
| [   | [GROSS and NET weighments cannot be added to  | **Yes** **No** |
| 1.] | (or subtracted from) the same TOTAL           | **NA**         |
| {.u | accumulator.]{.underline}                     |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
| [   | [The device has motion detection capability   | **Yes** **No** |
| 2.] | that prevents the device from accumulating    | **NA**         |
| {.u | weighments before the weight display has      |                |
| nde | stabilized within specified limits. The       |                |
| rli | limits for motion detection are:]{.underline} |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | > [(a) 3 scale divisions for axle load,       | **Yes** **No** |
|     | > railway track, vehicle scales, and hopper   | **NA**         |
|     | > (other than grain hoppers) scales with a    |                |
|     | > capacity exceeding 22 000 kg (50 000 lb);   |                |
|     | > and]{.underline}                            |                |
+-----+-----------------------------------------------+----------------+
|     | > [(b) 1 scale division for all other         | **Yes** **No** |
|     | > scales.]{.underline}                        | **NA**         |
+-----+-----------------------------------------------+----------------+
|     | [It is recommended that the indicator         |                |
|     | simultaneously display the TOTAL weight and   |                |
|     | the current weight on the load-receiving      |                |
|     | element. Devices equipped with accumulation   |                |
|     | capability must provide a clear indication    |                |
|     | that a weighment has been entered. This       |                |
|     | indication may be a TOTAL display mode, a     |                |
|     | lighted legend, or an annunciator such as     |                |
|     | total entered.]{.underline}                   |                |
+-----+-----------------------------------------------+----------------+
| [   | [The method used to indicate that a weighment |                |
| 3.] | has been entered:]{.underline}                |                |
| {.u |                                               |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
|     | [3.1. A separate continuous indication of the | **Yes** **No** |
|     | TOTAL weight display mode.]{.underline}       | **NA**         |
+-----+-----------------------------------------------+----------------+
|     | [3.2. The device has selectable "current      | **Yes** **No** |
|     | weight" and "TOTAL weight " display modes     | **NA**         |
|     | with proper descriptors.]{.underline}         |                |
+-----+-----------------------------------------------+----------------+
|     | [3.3. A lighted legend or annunciator of      | **Yes** **No** |
|     | "weight entered" or a similar statement is    | **NA**         |
|     | used to indicate that a weighment has been    |                |
|     | added to the TOTAL weight.]{.underline}       |                |
+-----+-----------------------------------------------+----------------+
|     | > [3.3.1. An entry of "zero" should not       | **Yes** **No** |
|     | > activate the annunciator, or the item       | **NA**         |
|     | > count.]{.underline}                         |                |
+-----+-----------------------------------------------+----------------+
|     | [3.4.                                         | **Yes** **No** |
|     | Other:\_\_\_\_\_\_\_\_\_\_\                   | **NA**         |
|     | _\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ |                |
|     | \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_]{.underline} |                |
+-----+-----------------------------------------------+----------------+
|     | > [3.4.1. The method is                       | **Yes** **No** |
|     | > acceptable.]{.underline}                    | **NA**         |
+-----+-----------------------------------------------+----------------+
| [   | [If units are converted, the weight unit      | **Yes** **No** |
| 4.] | selector switch must convert both the current | **NA**         |
| {.u | weight display and the TOTAL weight           |                |
| nde | display.]{.underline}                         |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
| [   | [If the device has a current/total switch,    | **Yes** **No** |
| 5.] | the TOTAL weight display must be inhibited    | **NA**         |
| {.u | when a load is on the platform.]{.underline}  |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
| [   | [The device shall indicate the number of      | **Yes** **No** |
| 6.] | items accumulated whenever the TOTAL weight   | **NA**         |
| {.u | is displayed.]{.underline}                    |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
| [   | [If the device can simultaneously accumulate  | **Yes** **No** |
| 7.] | transactions for more than one customer,      | **NA**         |
| {.u | customer identification codes must be         |                |
| nde | displayed.]{.underline}                       |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
| [   | [The device must return to gross load zero    | **Yes** **No** |
| 8.] | between each weighment                        | **NA**         |
| {.u | accumulated.]{.underline}                     |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+
| [   | [The TOTAL key does not act as a repeat       | **Yes** **No** |
| 9.] | key.]{.underline}                             | **NA**         |
| {.u |                                               |                |
| nde |                                               |                |
| rli |                                               |                |
| ne} |                                               |                |
+-----+-----------------------------------------------+----------------+

**Conclusion:** The Sector did not have time to review this item and it
will be carried over until the next meeting of the Weighing Sector. The
Sector is requested to review the above recommendation from Maryland
Participating Laboratory.

[]{#__RefHeading___Toc62283074 .anchor}32. Last Item: Tentative Date and
Location of Next Meeting

California is next on the rotation for meeting locations. The next
meeting of the NTETC Weighing Sector has been scheduled for September
11-13, 2003, at the Picadilly Inn in Fresno California and will be held
prior to the Annual Western Weights and Measures Technical Conference.

**Attachments**

Attachment to Agenda Item 1

![](media/image4.png){width="1.4in" height="1.0799212598425196in"}

**SCALE MANUFACTURERS ASSOCIATION**

6724 Lone Oak Blvd. Naples, FL 34109

Tel: 239-514-3441 Fax: 239-514-3470

Web Site: http://www.scalemanufacturers.org

To: NCWM S&T Committee September 20, 2002

From: SMA Technical Committee

Subject: S&T Item 320-1

Reference Dave Quinn's January 2002 letter, subject as above

As pointed out in Dave Quinn's above referenced letter, S&T Agenda Item
320-1B is "not a single item but a number of normally separate items
rolled into one leaving no way to discuss, much less vote[,]{.underline}
on each individual item. One simply has to look at the title of the
agenda item to see the potential problems and complexities". Mr. Quinn
states that this " item proposes that for N.1.3.4., (1) the dimensions
of the shift test pattern for a vehicle scale be changed, (2) that
livestock scales be removed from N.1.3.4., (3) a different shift test
pattern be defined for livestock scales with more than two sections, and
(4) Table S.6.3. be changed to document the above changes. The item also
incorporates "a new revised definition for Concentrated Load Capacity
and some new H44 terminology for a "Combination Vehicle/ Livestock"
scale for which there is no definition and which, in fact[,]{.underline}
is not a product produced by any manufacturer. A summary of the current
and proposed N.1.3.4. requirements is attached.

Mr. Quinn also correctly points out that "the item also requires
accepting the practice of defining devices based on weighing application
as opposed to the design criteria required for particular class of
scale.

 

Mr. Quinn goes on to remark "Item 320-1B is also proposing that a
vehicle scale designed for weighing load concentrations of 1500 pounds
-- 2000 pounds per square foot must also be marked as a "livestock"
scale if it is to be used to weigh livestock which create a load
concentration of 110 pounds per square foot. It may seem to lack logic,
and it does, but that is what the item proposes. We urge the S&T to step
back and reconsider trying to define the infinite spectrum of what can
or cannot be weighed on a scale and go back to classifying scales based
on the worst-case design loads that are required. If this is not done
the door is open to try and define what commodities can be weighed on a
bench scale, floor scale, hopper scale etc."

The SMA Technical Committee also agrees with Mr. Quinn that "A vehicle
scale is designed for the worst case conditions dictated by the dynamic
loads of weighing over the highway trucks driving on or off a scale and
a livestock scale is designed for a much lower level of dynamic loading.
Weighing pallets, bins, vehicles, or livestock are within the design
parameters of a vehicle scale as long as the minimum load requirements
are met. It is not necessary to stipulate that the vehicle scale can be
used for weighing pallets, bins, or livestock: it is simply logical that
this is appropriate. On the other hand, although the livestock scale is
not designed for the rigors of highway truck weighing, it is perfectly
acceptable to weigh other items such as pallets, bins, and small
vehicles like cars and pickup trucks as long as the minimum load
requirements are met and nominal capacity not exceeded."

Therefore, the SMA TC joins Fairbanks' recommendation that the shift
test pattern for livestock scales be simply defined as it was prior to
1988:

Page 2

NCWM S&T Committee

> **N.1.3.4. Vehicle Scales, Axle-Load Scales, and Livestock Scales With
> More Than Two Sections.**
>
> **N.1.3.4.1. Vehicle Scales and Axle Load Scales. -**
>
> **At least one shift test shall be conducted with a minimum test load
> of 12.5 % of scale capacity and may be performed anywhere on the
> load-receiving element using the prescribed test patterns and maximum
> test loads specified below. . . .**
>
> **N.1.3.4.2. Livestock Scales With More Than Two Sections. - A shift
> test equal to one half the rated sectional capacity shall be conducted
> with test loads distributed over each section of the scale. (Two
> section livestock scales shall be tested consistent with N.1.3.8.)**
>
> **(Amended 1991, 2000, and 200X)**

We also concur that ". . .two section livestock scales should use the
existing H-44 N.1.3.8. and that it is not necessary to define the
physical dimensions of the livestock scale shift test pattern

The rationale for the above recommendations and comments is contained in
the following pages.

Sincerely

Daryl Tonini

Chairman, SMA Technical Committee

Attach: Summary of Current and Proposed N.1.3.4 Requirements

Cs. Regional W&M S&T Committees

NTEP Weighing Sector

**RATIONALE:**

Subject: S&T Item 320-1B

This particular item is difficult to comment on. It has become very
complex because of the sheer number of inputs that are based on
conclusions that are neither technically correct nor factually supported
and show some degree of a lack of understanding of both history and
application. Some examples are:

> 1\. A "Combination Vehicle/Livestock" scale requires a special design
> for the load-receiving elements and load receiver differing from that
> of a standard vehicle scale.
>
> 2\. Vehicle scales used to weigh livestock must be tested side to side
> because cattle will gather in corners.
>
> 3\. Livestock, especially cattle, are more abusive to a vehicle scale
> than truck traffic.
>
> 4\. Stock racks and gates added to a vehicle scale increase the dead
> load on the scale beyond that tested in an NTEP evaluation and
> therefore additional testing is required.
>
> 5\. A truck on a vehicle scale load-receiving element causes movement
> from end to end and not side-to -side as livestock would. Vehicle
> scales have checking only for this end-to-end movement and therefore
> require modification to deal with livestock movement.
>
> 6\. A new mindset that a shift-test must have a specific weight
> pattern detailed in H-44.

The following is an attempt to clarify and present technical support
refuting the above points:

**1. A "Combination Vehicle/Livestock" scale requires a special design
for the load-receiving elements and load receiver differing from that of
a standard vehicle scale.**

The term "Combination vehicle livestock" scale dates back to at least
1958 and was used by manufacturers to describe a standard vehicle scale
and indicator package that was suitable for weighing livestock on a
vehicle scale and priced as a single catalog item. The "special"
features added to a standard vehicle scale were an indicator (usually a
beam) with 5pound divisions as required by P&S, and mechanical
restraints to stabilize the weight reading due to livestock movement.
Nothing else was done to the vehicle scale. No modifications were made
in the weighbridge enabling the scale to be used for this application.
Today if such a package priced item were to exist for a "Combination
vehicle livestock" scale[,]{.underline} it would be simply a standard
vehicle scale, no special additions[,]{.underline} and an electronic
instrument with filtering capable of stabilizing the weight reading due
to livestock movement.

**2. Vehicle scales used to weigh livestock must be tested side to side
because cattle will gather in corners**.

A vehicle scale is designed for the load concentration of a dual tandem
axle applied to the load receiver of the scale. This load concentration
is in an area of 4 feet x 8 feet and is defined in H-44 as Concentrated
Load Capacity (CLC). A typical CLC would be 60,000 pounds for a dual
tandem axle. Assume for this discussion that the vehicle scale platform
is 10 feet wide. The load bearing points under the load receiver are, by
design, normally about 6 inches inboard from each side, placing them 9
feet apart on a 10 foot-wide scale. Studies have shown that the drivers
will tend to observe the left side of the scale from his position in the
cab to place the vehicle 6 to 12 inches from the left side of the scale
platform. This results in the load bearing points under the dual tandem
nominally sharing the load approximately 50/50.

The H-44 Scale Code shift test pattern for a vehicle scale, N.1.3.4.,
describes a weight pattern of 4 feet x 10 feet, which, on the 10
foot-wide scale, loads the load bearing points exactly 50/50. The area
of the shift test pattern is 40 square feet and the concentrated load of
60,000 pounds is distributed at 1,500 pounds per square foot. The shift
test pattern correctly tests the scale "as used" simulating the weight
distribution of a dual tandem axle over the load bearing points. It is
not necessary to test a 10 foot-wide vehicle scale side to side because
an "as used" weight distribution is nominally 50/50 side to side. Note:
As a load receiver increases in width the vehicle position on the scale
remains the same relative to the left side and the weight distribution
begins to change with more of the vehicle weight on the left
load-bearing points and less of the vehicle's load on the right
load-bearing points. With scale widths over 12 feet, side-to-side
differences may begin to show up. The new shift test pattern dimensions
adopted by NCWM in 2001 should be used to test side to side on vehicle
scales over 12 feet in width.

Some years ago P&S conducted a study to determine the concentrated load
of cattle on a scale platform. The purpose of this study was to
determine the amount of weight necessary to check a livestock scale to
its used capacity. Numerous sized load receivers were used and cattle
were pressed onto the loading surface to fill the area completely. The
result was that when no more cattle could be squeezed onto the weighing
surface the total weight averaged 110 pounds per square foot. (This fact
was confirmed with a retired P&S employee involved in the study.) The
load concentration of cattle on a load receiver is only 7 % of the load
concentration of the shift test pattern above (1,500 pounds per square
foot). A 34,000 pound legal over the highway dual tandem axle in the
same design spacing of 4 feet x 8 feet would distribute the axle load
over 1063 pounds per square foot. Based on the 50/50 weight distribution
to the transverse load points, the shift test pattern would load each
side of the scale to 30,000 pounds (area 4 foot x 5 foot) and the legal
dual tandem axle would load each side to 17,000 pounds (area 4 foot x 5
foot). Based on the P&S study, the worst-case condition created by
cattle gathering in this 4 foot x 5-foot area would be a load
concentration of 2,200 pounds as opposed to the 17,000 pounds legal dual
tandem axle or the 30,000 pounds shift test pattern. Cattle do tend to
gather together on a load receiver and do so in the two corners at the
end of a vehicle scale. Assuming this "gathering" weighs a total of
17,000 pounds, the weight would be spread over 155 square feet an area 5
times that occupied by the 32 square feet of the dual tandem axle
weighing 34,000 pounds.

The minimum load of livestock on a vehicle scale is 500 divisions or
10,000 pounds with a division size of 20 pounds. This minimum load would
occupy 91square feet, an area greater than twice the load distribution
of the 40 square feet in the vehicle scale shift test pattern. Testing
side to side on a normal width (10 feet to 12 feet) vehicle scale is not
necessary due to normal distribution of livestock weight. Testing the
same scale side to side if it is to be used in livestock weighing
follows no logic. For that reason P&S did no special testing of vehicle
scales used to weigh livestock, if they had been tested and certified as
a vehicle scale by local jurisdictions. If P&S did test a vehicle scale
they conducted only the normal test over sections. (This fact was also
confirmed with a retired P&S employee.)

**3. Livestock, especially cattle, are more abusive to a vehicle scale
than truck traffic.**

A legal highway truck can have a gross weight of 80,000 pounds. For the
sake of this discussion, assume a maximum gross weight of 60,000 pounds.
Also assume an average vehicle scale size of 70 feet x 10 feet (700
square feet). The average speed for a vehicle entering onto a vehicle
scale load receiver is between 3 and 5 mph. The load receiver is at rest
when the front axle of the vehicle first touches the load receiver
causing the load receiver to move in the direction of the truck
movement. The average 70 foot x 10-foot concrete deck load receiver
weighs about 35,000 pounds so the dynamic forces of the load receiver
moving from rest is severe. When the truck stops on the load receiver,
the inertial force created by stopping of a the moving 60,000-pound load
causes an equal force on the load receiver. The same dynamics take place
when the vehicle begins to accelerate to leave the scale.

By loading the same 700 square feet of load receiver with cattle the
average maximum load would be 77,000 pounds. The cattle enter the load
receiver not as a single 77,000-pound mass like a vehicle but rather
randomly until the load receiver has no space for more. Loaded to 110
pounds per square foot, the cattle cannot move at all. To reduce the
load of cattle to 60,000 pounds (same as vehicle) the square footage
they would occupy gathered together would be 545 square feet allowing
155 square feet of open area in which to move freely. For these cattle
to even simulate the dynamics of the vehicle the entire herd would have
to move as one single mass coming onto the scale in unison and leaving
the scale in like manner. Experience dictates this is not likely. What
if an individual animal ran from side-to-side or attempted to get off
the scale by climbing the stock racks? An average head of commercial
beef cattle weighs less than 1300 pounds and certainly cannot create
dynamic forces that come close to the vehicle scale design limits.

**4. Stock racks and gates added to a vehicle scale increase the dead
load on the scale beyond that tested in an NTEP evaluation and therefore
should require additional testing.**

The load capacity of an average vehicle scale section is 100,000 pounds
(50,000 pound capacity load cells). Assuming a 4-section concrete deck
scale, the dead load on each section will be in the area of 9,000 pounds
and the live load on each section at maximum rated capacity will be less
than 50,000 pounds. Total load on the section is 59,000 pounds or only
59 % of section capacity.  

The addition of racks and gates to the scale adds an additional 4500 to
5000 pounds at most and is well within scale design
limits[.]{.underline} These modifications are subject to Handbook 44
UR.2.7, UR.4.1., and UR.4.3., and are usually approved by the
manufacturers of the scale. In addition, because the live load uses such
a small portion of the total output of each load cell, an increase in
dead load will not change the linearity of the device.

**5. A truck on a vehicle scale load receiver causes movement of the
load receiver from end to end and not side-to-side as livestock would.
Vehicle scales have checking only for this end-to-end movement and
require modification to deal with livestock movement.**

The movement of a vehicle on the scale deck causes the deck to move in
an elliptical pattern which is why all vehicle scales limit transverse
as well as longitudinal movement. The recent use of "rocker" type load
cells drives this point home. These cells will rotate because of the
elliptical deck movement and if rotation is not controlled by design,
the cell cable will wind around the cell and break. To conclude that
vehicle scales are not checked for transverse movement is simply not
factual and to conclude that scale movement created by moving livestock
is more abusive to a vehicle scale than the movement of a vehicle is
technically incorrect.

**6. A new mindset that shift tests must have a specific weight pattern
detailed in H-44.**

The S&T item 320-1B attempts to place dimensions on a shift test pattern
for livestock scales with no apparent technical basis for the dimensions
used. Specific dimensions are essential in the shift test pattern for a
vehicle scale to simulate the manufacturer's concentrated design load on
the load receiver as applied by a dual tandem axle with 4-foot centers
and a width of 8 feet. To provide for better use of available test
equipment, NCWM and vehicle scale manufacturers agreed to a shift test
pattern of 4 feet x 10 feet.

One must ask: What is the rationale proposed by the S&T Committee for a
4 foot x 5 foot pattern concentrated over a load bearing point equal to
½ "sectional" capacity? Vehicle scales do not have a sectional capacity
rating they have a CLC rating (dual tandem axle rating) which one would
reasonably assume is the capacity of a section. Assume the 60,000-pound
CLC vehicle scale from the above discussion. The S&T Committee is
proposing to do a shift test on a vehicle scale used in a livestock
weighing application with a load of 30,000 pounds concentrated in a 4
foot x 5 foot pattern. This load equates 1,500 pounds per square foot as
opposed to the as used 110 pounds per square foot concentrated load of
cattle. The proposal lacks technical basis and logic. A load of 30,000
pounds of cattle would occupy 273 square feet, not 20 square feet as
proposed by the S&T agenda. Spread over this 273 square feet the load is
distributed side to side across the scale. P&S did section testing of
livestock scales with more than two sections, not corner testing, and
with no specific dimensions on a test pattern. In fact, other than the
vehicle shift test pattern which must have specific dimensions to
simulate the dual tandem axle for which the scale is designed, no other
shift test, regardless of scale type, is defined by dimensions in H-44.

**Conclusions:** It is important to understand that "floor scale",
"bench scale", "hopper scale", "livestock scale" and "vehicle scale" are
terminology used to describe the design criteria that a manufacturer
must use to provide a product suitable for a type of application.
However, the design is not limited to that specific application. A bench
scale is designed to take full capacity loads anywhere on the load
receiver and should be tested to insure that the scale can, in fact,
perform to that specification. During an NTEP evaluation of a bench
scale, the initial verification procedure is tested with weights and a
permanence test is conducted after a specified number of cycles of test
load are applied to the scale. In the market place it is understood that
the bench scale can weigh produce, meat, hardware, etc.. The scale is
not NTEP evaluated for each application. From a manufacturing
standpoint, there is no difference in the load receiver of a grain
hopper scale or the same hopper scale used to weigh sand or cement. The
difference is in tolerances allowed in H44~~,~~. If the NTEP test of a
hopper is based on the tightest H-44 requirements then it should be
understood that less stringent applications are an acceptable use of the
hopper scale. Likewise, a vehicle scale designed for the dynamic loads
created by large masses that stop and go quickly on the load receiver.
No one would question that a pallet of metal castings could properly be
weighed on a vehicle scale as long as the load met the minimum weight
requirements for a vehicle scale. Yet the S&T item suggests that if
livestock are to be weighed on a vehicle scale, the scale must be tested
as a "livestock" scale. We are letting long-standing "classifications"
of scales get in the way of valid requirements. A scale classified as a
"livestock" scale is specifically designed for livestock weighing by a
manufacturer and the design criteria is based on dynamics that are well
below the dynamics that must be considered for a scale classified as a
"vehicle" scale. Understanding the design of a vehicle scale, logic
dictates that livestock weighing dynamics are well within the dynamic
design limits of a vehicle scale. Given an appreciation of the dynamics
of a livestock scale design, logic would dictate that most vehicles
would exceed the dynamic design limits of a scale classified as a
"livestock". However, that being said, this does not preclude the
weighing of vehicles that are obviously within the specified design
limits of a scale classified as a "livestock" scale. Example a 20 ton,
10 ton per section "livestock" scale could weigh a pick up truck of
baled hay and be well within the design limits of the livestock scale.

NTEP is not nor was it ever intended to define all the applications
acceptable for a specific "class" of scale. It has always been and
continues to be the responsibility of the local W&M authority to
determine the suitability of a scale for the application. This judgment
has to be based on logic and understanding of both the device design and
the application in question and must be applied nationally in a uniform
basis.

Attachment to Agenda Item 16

The first proposal breaks up the long paragraphs in Publication 14, 2002
Edition vehicle scale test procedures in (hopefully) easier to follow
steps.

The second proposal is included in a letter from Ross Anderson, NY,
describing the vehicle test procedures that includes the steps in a
table format and describes test weights and weight cart positions and
usage. Ross Anderson will present additional proposed language, at the
Sector meeting.

The Sector also reviewed information provided by the Ohio participating
laboratory for possible Checklist Items and Test Report Forms.

Proposal 1:

2.  Shift Tests. Conduct at least two complete sets of shift tests over
    each section to at least 90 % of the rated CLC. A single complete
    shift test is defined in steps a through d.

    a.  The shift test will be conducted by loading one end section to
        the first of at least five test loads, moving the load to each
        section, increasing the load to the next increment (at the
        opposite end of the scale) and repeating up to at least 90 % of
        the CLC using loads that are as evenly incremented as possible
        with the available equipment.

    b.  Record the error moving the load to each section until the
        opposite end of the scale is reached, recording the error at
        each section and at each load.

    c.  Conduct a decreasing load lest on the section at the end of the
        scale where the weights can be reloaded.

(Note from NIST Technical Advisor: Is step c. necessary since a
decreasing load is done with 90 % CLC (worst case) during the shift test
(step e.) and during the strain-load tests? Discuss at next sector
meeting?)

d.  Repeat the shift test procedure above in steps a, b, and c for each
    weight increment until at least 90 % of the CLC is reached ~~and on
    this test where the maximum applied test weights are loaded on the
    scale~~. While at the maximum test load, locate the test weights and
    record the errors at each section, mid-span between sections, and on
    modular scales, each on the right and left side of the module
    connection line located at each section.

e.  Conduct a decreasing load test on one end section of the scale.

(**Note:** If possible, the first increment of test weights should equal
500e. If weights cannot be conveniently applied that equal 500e, the
first load should equal just below 500e as nearly as possible. The other
tolerance breakpoints should be tested if possible.)

Delete 65a.3.2. and 65a.3.3.

The weighing labs reviewed the remaining procedures for strain load
testing and testing of side-by-side and extra wide vehicle scales and
felt that, other that the shift test procedures being made clearer
consistent with the above recommendation, the procedures, test patterns,
and test load positions were representative of these scales potential
usage.

**Proposal 2:**

Outline of Typical NTEP Vehicle Scale Evaluation from Pub 14

By Ross Andersen, New York State

August 29, 2002

This outline is my interpretation of the current Pub 14 Checklist items
for testing vehicle scales. It is also based on my participation in the
Weighing Sector meetings during their development and training from
Henry Oppermann. The diagrams below illustrate that these tests as
written will evaluate performance over a fairly wide range of the
scale's capacity.

![](media/image5.wmf){width="6.3in"
height="3.190157480314961in"}![](media/image6.wmf){width="6.3in"
height="3.0492125984251968in"}

**Note:** For each X in the tables below, the evaluator shall determine
actual errors at each test load and application point. Loading shall be
within limits specified by the manufacturer as per scale capacity and
CLC. All examples are based on the three-section scale pictured in Pub
14. Test points would be added for additional sections as necessary
following the same patterns.

> **65.3.1. Two complete Sets - Loads 1-5 should be approximately evenly
> spaced over the test range to reach 90 % of CLC. This does leave some
> leeway to use test loads close to the tolerance break points and that
> are convenient to using the weight carts available to maximum
> advantage. The objective is to provide data that demonstrates
> increasing load performance over each section of the scale and at each
> mid-span.**

  -----------------------------------------------------------------------
  Load \\ Location       Sect 1  Mid Span 1-2 Sect 2 Mid Span 2-3 Sect 3
  ---------------------- ------- ------------ ------ ------------ -------
  1st Test Load 1        X                    X                   X

  1st Test Load 2        X                    X                   X

  1st Test Load 3        X                    X                   X

  1st Test Load 4        X                    X                   X

  1st Test Load 5        X                    X                   X

  2nd Test Load 1        X                    X                   X

  2nd Test Load 2        X                    X                   X

  2nd Test Load 3        X                    X                   X

  2nd Test Load 4        X                    X                   X

  2nd Test Load 5        X                    X                   X
  -----------------------------------------------------------------------

> 65.3.2. One set of shift tests at mid span (May be done in conjunction
> with one of the sets of shift tests in 65.3.1.)

  ---------------------- ------- ------------ ------- ------------ --------
  Load \\ Location       Sect 1  Mid Span 1-2 Sect 2  Mid Span 2-3 Sect 3

  Mid-span Load 1                X                    X            

  Mid-span Load 2                X                    X            

  Mid-span Load 3                X                    X            

  Mid-span Load 4                X                    X            

  Mid-span Load 5                X                    X            
  ---------------------- ------- ------------ ------- ------------ --------

> 65.3.3. Test of Module Connections for Modular Scales -- Assumes tests
> in 65.3.1 were done with test load straddling the joint between module
> 1 and 2. (May be done in conjunction with one of the sets of shift
> tests in 65.3.1.)

  ---------------------------- -------------------- ---------------------
  Load \\ Location             Left Side Sect 2     Right Side Sect 2

  Maximum feasible load e.g. 5 X                    X
  ---------------------------- -------------------- ---------------------

> 65.4. Strain Load Tests (65.4.2. - 65.4.5.)

  -----------------------------------------------------------------------
  Load \\ Location                                End A       End B
  ----------------------------------------------- ----------- -----------
  1^st^ Test - Strain Load distributed on End A   Strain Load Ref Val

  1^st^ Test - Inc Test Load 1 (applied to End B) Strain Load X

  1^st^ Test - Inc Test Load 2                    Strain Load X

  1^st^ Test - Inc Test Load 3                    Strain Load X

  1^st^ Test - Inc Test Load 4                    Strain Load X

  1^st^ Test - Inc Test Load 5                    Strain Load X

  1^st^ Test - Remove Test Load 5                 Strain Load Ref Val

  1^st^ Test con't - Inc Load 1                   Strain Load X

  1^st^ Test con't - Inc Load 2                   Strain Load X

  1^st^ Test con't - Inc Load 3                   Strain Load X

  1^st^ Test con't - Inc Load 4                   Strain Load X

  1^st^ Test con't - Inc Load 5                   Strain Load X

  1^st^ Test con't - Dec Load 4                   Strain Load X

  1^st^ Test con't - Dec Load 3                   Strain Load X

  1^st^ Test con't - Dec Load 2                   Strain Load X

  1^st^ Test con't - Dec Load 1                   Strain Load X

  1^st^ Test con't - Dec Load @ Strain load)      Strain Load X

  Remove strain load and rezero scale                         

  2^nd^ Test - Strain Load distributed on End B   X           Ref Val

  2^nd^ Test - Inc Test Load 1 (applied to End A) X           Strain Load

  2^nd^ Test - Inc Test Load 2                    X           Strain Load

  2^nd^ Test - Inc Test Load 3                    X           Strain Load

  2^nd^ Test - Inc Test Load 4                    X           Strain Load

  2^nd^ Test - Inc Test Load 5                    X           Strain Load

  2^nd^ Test - Remove Strain Load leaving Dec     X           
  Test Load 5 on End A                                        

  2^nd^ Test - Dec Test Load 4                    X           

  2^nd^ Test - Dec Test Load 3                    X           

  2^nd^ Test - Dec Test Load 2                    X           

  2^nd^ Test - Dec Test Load 1                    X           

  2^nd^ Test - Dec Test Load at zero              X           
  -----------------------------------------------------------------------

> **Notes on Initial Performance Tests**: I expect that the two sets of
> shift tests will probably be combined as follows to be as efficient as
> possible. Note: The two tables below include all the required tests in
> Pub 14 Section 65.3.
>
> Shift Tests (Set One)

  ---------------------- ------- ------------ ------- ------------ -------
  Load \\ Location       Sect 1  Mid Span 1-2 Sect 2  Mid Span 2-3 Sect 3

  Test Load 1                                                      

  Test Load 2                                                      

  Test Load 3                                                      

  Test Load 4                                                      

  Test Load 5                                                      
  ---------------------- ------- ------------ ------- ------------ -------

It has been suggested that the strain tests should be done between the
two sets of shift tests to ensure that loading the scale near capacity
does not change performance.

> Shift Tests (Set Two)

  ---------------------- ------- ------------ ------- ------------ -------
  Load \\ Location       Sect 1  Left Joint-2 Sect 2  Right Joint  Sect 3
                                                      2            

  Test Load 1                                                      

  Test Load 2                                                      

  Test Load 3                                                      

  Test Load 4                                                      

  Test Load 5                                                      
  ---------------------- ------- ------------ ------- ------------ -------

![](media/image7.png){width="3.12007874015748in"
height="1.8929133858267717in"}![](media/image8.png){width="3.1145669291338582in"
height="2.119291338582677in"}**Remaining Questions:**

-   How do you use more than one weight cart? The two carts must be
    loaded end-to-end to avoid loading the center of the platform. Most
    carts can't be loaded side by side since they have wheelbases in the
    5-6 foot range. Even if they could be loaded side-by-side, the
    loading pattern would not be acceptable since this would result in
    50 % of the test load being loaded on the centerline of the deck
    where no truck tire can ever reach. Loading the center-line of the
    platform was industry's big beef on this subject.

-   How should weights be loaded in conjunction with a weight cart? To
    keep loading approximately symmetrical in a pattern, I believe that
    the weights should either be loaded equally on both sides of the
    cart or lined up completely across the test pattern immediately in
    front of or behind the cart.

-   What additional tests should be done to cover livestock weighing?
    We'll cover this subject another day!

> 65.5. Permanence Tests 20-30 days later after period of use with test
> loads of at least 40,000 lb or 50 % CLC, whichever is greater.
> Typically this will only result in four test loads (4 tolerance
> bands).
>
> 65.5.2. Shift Test - One set minimum

  -------------------- -------- -------------- ------- ------------- -------
  Load \\ Location     Sect 1   Mid Span 1-2   Sect 2  Mid Span 2-3  Sect 3

  1st Test Inc Load 1  X        X              X       X             X

  1st Test Inc Load 2  X        X              X       X             X

  1st Test Inc Load 3  X        X              X       X             X

  1st Test Inc Load 4  X        X              X       X             X
  -------------------- -------- -------------- ------- ------------- -------

65.5.3. Strain Load Tests - One set minimum

  ----------------------------------------------- ------------ ----------
  Load \\ Location                                End A        End B

  1^st^ Test - Strain Load distributed on End A   Ref Val X    

  1^st^ Test - Inc Test Load 1 (applied to end B) Strain Load  X

  1^st^ Test - Inc Test Load 2                    Strain Load  X

  1^st^ Test - Inc Test Load 3                    Strain Load  X

  1^st^ Test - Inc Test Load 4                    Strain Load  X

  1^st^ Test - Dec Load 3                         Strain Load  X

  1^st^ Test - Dec Load 2                         Strain Load  X

  1^st^ Test - Dec Load 1                         Strain Load  X

  1^st^ Test - Dec Load (Strain)                  Ref Val X    

  1^st^ Test - Remove strain load - Dec Load @                 X
  zero                                                         

  Reestablish zero Reference                                   

  2^nd^ Test - Strain Load distributed on End B                Ref Val X

  2^nd^ Test - Inc Test Load 1 (applied to end A) X            Strain
                                                               Load

  2^nd^ Test - Inc Test Load 2                    X            Strain
                                                               Load

  2^nd^ Test - Inc Test Load 3                    X            Strain
                                                               Load

  2^nd^ Test - Inc Test Load 4                    X            Strain
                                                               Load

  2^nd^ Test - Remove Strain Load leaving Dec     X            
  Test Load 4 on end A                                         

  2^nd^ Test - Dec Test Load 3                    X            

  2^nd^ Test - Dec Test Load 2                    X            

  2^nd^ Test - Dec Test Load 1                    X            

  2^nd^ Test - Dec Test Load at zero              X            
  ----------------------------------------------- ------------ ----------

**Note:** The use of four test loads is based on standard procedure of
taking one reading in each tolerance band over the range of weight used
in the test.

**OHIO NTEP Lab Vehicle Scale Test Procedures and Report Forms**

**Large Capacity Platform And Vehicle Scales Checklist**

**Table Of Contents**

**[Table of Contents]{.underline} [Page]{.underline}**

Section 1. Information

Section 2. Device

Section 3. Markings

Section 4. Load Cells and Worksheets

Section 5. Weight Information

Section 6. Evaluation Criteria

Section 7. Performance and Permanence Test for Vehicle Scales

Section 7. Increasing Load Test

Section 7. Shift Test (Form)

Section 8. Strain Test (Form)

Section 9. General Considerations

Section 10. Scale Status

Section 11. Acceptance Tolerance Table

**Section 1. Information**

Date of Test Control Number CC Number

Scale Owner

Address

City State Zip Code

Manufacturer

Address

City State Zip Code

Telephone Fax

**Section 2. Device**

Scale Model Number Scale Capacity

Division Size Number of sections Size of Platform(s)

Serial Number CC Number

CLC Accuracy Class

**Section 3. Markings**

**Section 4. Load Cells**

Load cells for which Certificates of Conformance have been issued under
the National Type Evaluation Program shall be marked with the following:

> 1\. the accuracy class of III, III L corresponding to the scale
> accuracy class for which its use is intended

2.  the maximum number of scale divisions (stated in units of 1 000) for
    which the accuracy class requirements are met

3.  a "S" or "M" for single or multiple cell applications, respectively,
    in conjunction with the maximum number of scale divisions for each
    class and application in which the load cell may be used

4.  the direction of loading, if not obvious

5.  special limits of working temperature if other than 14 F to 104 F
    (-10 C to 40 C); and

6.  the name and address of the manufacturer or the manufacturer's
    trademark, model designation, minimum dead load, maximum capacity
    safe load limit, and load cell verification interval (v~min~).

The required information may be given on a plate attached to the load
cell or, alternatively, in an accompanying document. If the document is
the source of the information, the serial number of the load cell shall
be marked on the load cell plate and also given in the document. Yes No

Load Cell Manufacturer Model Number

Is/Are load cell(s) NTEP approved Yes No

CC Number Number of load cells

Load Cell Capacity Number of divisions V~min~

Load Cell Serial Numbers:

  ------------------------------------- ---------------------------------
  1\.                                   2\.

  3\.                                   4\.

  5\.                                   6\.

  7\.                                   8\.

  9\.                                   10\.

  11\.                                  12\.

  13\.                                  14\.

  15\.                                  16\.

  17\.                                  18\.

  19\.                                  20\.
  ------------------------------------- ---------------------------------

**Load Cell Formulas:**

For scales without lever system and N is the number of load cells in the
scale: **v~min~d N**

v~min~ of the load cell must be less than or equal to the scale division
divided by the square root of the number of load cells.

For scales with a lever system: **v~min~ d (N x scale multiple)**

v~min~ of the load cell must be less than or equal to the scale division
divided by the square root of the number of load cells multiplied by the
scale multiple.

**WORKSHEET**

**FOR NEW VEHICLE & LIVESTOCK SCALE INSTALLATIONS**

**HANDBOOK 44 MARKING REQUIREMENTS & SUITABILITY CRITERIA**

  ------------------------------------------------------------------------
  **MARKINGS**               **INDICATING       **WEIGHING     **LOAD
                             ELEMENT**          ELEMENT**      CELL(s)**
  -------------------------- ------------------ -------------- -----------
  **Manufacturer**                                             

  **Model**                                                    

  **CC Number**                                                

  **Serial Number**                                            

  **Class III, III L,                                          
  III/III L**                                                  

  **Capacity**                                                 ***NA***

  **\"d\" Scale Division                        **NA**         **NA**
  Value**                                                      

  **\"e~min~\" Minimum Scale **NA**                            **NA**
  Division**                                                   

  **\"n~max~\" Maximum                                         
  Number of \"d\"**                                            

  **\"V~min~\" Verification  **NA**             **NA**         
  Scale Div.**                                                 

  **Single Cell (S) or       **NA**             **NA**         
  Multiple Cells (M)**                                         

  **\"CLC\" Concentrated                                       **NA**
  Load Cap.**                                                  
  ------------------------------------------------------------------------

+---------------------------------------------------+------------------+
| **Suitability Criteria**                          | **Meets          |
|                                                   | Requirements**   |
|                                                   |                  |
|                                                   | **yes no NA**    |
+===================================================+==================+
| **Is e~min~ [\<]{.underline} d ?                  |                  |
| [\<]{.underline}**                                |                  |
+---------------------------------------------------+------------------+
| **Is \"n\"(for system) [\<]{.underline} n~max~    |                  |
| (smallest of any one) ? [\<]{.underline}**        |                  |
+---------------------------------------------------+------------------+
| **Is capacity [\<]{.underline} \[(no. sections -  |                  |
| 0.5) x CLC\]? [\<]{.underline}**                  |                  |
+---------------------------------------------------+------------------+
| **Is V~min~ dN ? (scales without levers)          |                  |
| [\<]{.underline}**                                |                  |
+---------------------------------------------------+------------------+
| **Is V~min~ d(N x scale multiple)?(Lever Systems) |                  |
| [\<]{.underline}**                                |                  |
+---------------------------------------------------+------------------+

**3/94 (C:\\wp51\\wkstIIIL)**

**WORKSHEET**

**FOR NEW CLASS III SCALE INSTALLATIONS (CAPACITY \> 2000 lb)**

**HANDBOOK 44 MARKING REQUIREMENTS & SUITABILITY CRITERIA**

  --------------------------- ------------------ -------------- -----------
  **MARKINGS**                **INDICATING       **WEIGHING     **LOAD
                              ELEMENT**          ELEMENT**      CELL(s)**

  **Manufacturer**                                              

  **Model**                                                     

  **CC Number**                                                 

  **Serial Number**                                             

  **Class III, III/III L**                                      

  **Capacity**                                                  **NA**

  **\"d\" Scale Division                         **NA**         **NA**
  Value**                                                       

  **\"e~min~\" Minimum Scale  **NA**                            **NA**
  Division**                                                    

  **\"n~max~\" Maximum Number                                   
  of \"d\"**                                                    

  **\"V~min~\" Verification   **NA**             **NA**         
  Scale Div.**                                                  

  **Single Cell (S) or        **NA**             **NA**         
  Multiple Cells (M)**                                          
  --------------------------- ------------------ -------------- -----------

+------------------------------------------------------+---------------+
| ######## Suitability Criteria                        | **Meets       |
|                                                      | R             |
|                                                      | equirements** |
|                                                      |               |
|                                                      | **yes no NA** |
+------------------------------------------------------+---------------+
| **Is e~min~ [\<]{.underline} d ? [\<]{.underline}**  |               |
+------------------------------------------------------+---------------+
| **Is \"n\"(for system) [\<]{.underline} n~max~       |               |
| (smallest of any one) ? [\<]{.underline}**           |               |
+------------------------------------------------------+---------------+
| **Is V~min~ [\<]{.underline} d N ? (scales without   |               |
| levers) [\<]{.underline}**                           |               |
+------------------------------------------------------+---------------+
| **Is V~min~ [\<]{.underline} d (N x scale multiple)? |               |
| (lever systems) [\<]{.underline}**                   |               |
+------------------------------------------------------+---------------+

**Section 5. Weight Information**

**Vehicle scales:**

> 1\. The minimum amount of test weights needed for the test is 90 % of
> the concentrated load capacity.
>
> 2\. The minimum load for the strain load test in the initial test is
> at least 80 % of the scale capacity.
>
> 3\. The minimum load for the strain test in the subsequent test is at
> least 65 % of the scale capacity.
>
> 4\. The maximum number of scale divisions for a scale cannot exceed
> the lesser of the number of divisions for which the load cells and
> indicator were evaluated separately, i.e., if the load cells have an
> NTEP Certificate for a maximum of 10 000 divisions and indicator has
> an NTEP Certificate of 8 000 divisions, then the scale is limited to a
> maximum of 8 000 divisions.

**Section 6. Evaluation Criteria**

These evaluation criteria are to be used in conjunction with the
applicable NTEP requirements for Digital Electronic Scales (Section 1 of
NCWM Publication 14). Also see HB 44 General Code Requirements.

**Provisions for Sealing Adjustable Components on Electronic Devices**

**Code Reference: G-S.8., S.1.11**

Due to the ease of adjusting the accuracy of electronic scales, there
must be a provision for applying a security seal so that the security
seal must be broken before any adjustment that affects the performance
of the electronic device can be made. Performance adjustments generally
refer to accuracy and sensitivity adjustments. Yes No

**Antifriction Means**

Frictional effects shall be reduced to a minimum, by means of suitable
antifriction, at all points where system parts may come into contact
with each other.

> 1\. System components are properly designed to prevent binds or
> interfere with the weighing operation.
>
> Yes No
>
> 2\. Frictional effects have been reduced to a minimum. Yes No

**Adjustable Components**

**Code Reference: S.4.2**

An adjustable component, such as a nose iron or potentiometer, shall be
held securely in adjustment and shall not be adjustable from the outside
of the device except for a component for adjusting level or a no-load
reference value.

Yes No

**Repeatability of the Device**

**Code Reference: G-S.5.4, T.5**

A device shall be capable of repeating its indications and recorded
representations. The results obtained by several weights of the same
load under reasonable static test conditions shall agree within the
absolute value of the maintenance tolerance for that load, and shall be
within applicable tolerances. This requirement shall be met irrespective
of repeated manipulation of any element of the device in a manner
approximating normal usage and of the repeated performance of steps or
operations that are embraced in the testing procedure.

Repeatability - Indications. Yes No

**Installation Requirements - Protection from Environmental Factors**

**Code Reference: UR.2.1**

The indicating elements, the lever system or load cells, the
load-receiving element, and any permanently installed test weights shall
be adequately protected from environmental factors such as wind,
weather, and RFI that may adversely affect system operation or
performance. Yes No

**Installation Requirements - Foundation, Supports, and Clearance**

**Code Reference: UR.2.2**

The foundation and supports of any system shall be such as to provide
strength, rigidity, and permanence of all components. Clearance shall be
provided around all live parts so that no contact can result before or
during operation of the system.

> 1\. Adequate system foundation and supports are provided. Yes No
>
> 2\. Sufficient clearance around all live parts is provided. Yes No

**Section 7. Performance and Permanence Tests for Vehicle Scales**

Performance tests are conducted to ensure compliance with the tolerances
and, in the case of nonautomatic indicating scales, the sensitivity
requirements specified in NIST Handbook 44.

The test described here, apply primarily, to the weighing element. It is
assumed that the indicating element used during the test has already
been examined and found to comply with applicable requirements. If the
design and performance of the indicating element is to be determined
during the same test, the applicable requirements for weigh beams,
poses, dials, electronic digital indications, etc., must also be
referenced.

**Weighbeams**

The sensitivity test is conducted at zero load and at maximum load. The
sensitivity test is conducted by determining the actual test weight
value necessary to bring the beam from a rest point at the center of the
trig loop to rest points at the top and bottom of the trig loop. The
maximum load at which the sensitivity test is conducted need not be
comprised of known test weight.

**Increasing Load and Shift Tests**

At least two complete sets of shift tests shall be conducted over each
section to at least 90 % of the concentrated load capacity (CLC) of the
scale. This is to determine the repeatability of the scale. The scale
error should be determined at a minimum of five equally spaced test
loads. Scale errors may be determined at more points if desired. If two
weight carts are used, they should travel along the paths the wheels of
a vehicle would take when moving across the scale. Decreasing load tests
are to be avoided when testing a section. A truck many not be backed
onto the scale in order to place weights on the inner sections.
Decreasing load test shall be conducted after the sections have been
tested to their maximum load and the weights are being removed from the
scale. Do not exceed the CLC capacity. The load is to be distributed
across the section.

At least one complete set of shift tests to at least 90 % of the CLC
shall be conducted at midspan between sections.

If a scale consists of modules that are connected together to comprise
the weighbridge, shift tests shall be conducted by placing the load so
that it straddles the connection between the modules. At least one shift
test is to be conducted on the scale where the test load is placed first
on one side of the connection line of the module, then on the other side
of the connection line.

The results of the shift tests are required to agree within the absolute
value of the applicable maintenance tolerances and must be within
acceptance tolerances.

  ------------------------------- ------ ------ ---------- ------ ------------- ------- ------- ------- -----------
  NTEP Vehicle Scale Test Report                                                                        

  Company:                                                        Wind                          Test    
                                                                  Conditions:                   No:     

  Model:                                                          SN :                          Temp:   

  Device Type:                                                    Capacity x                    Tech:   
                                                                  Division                              

  No. of Sections:                              Platform                        CLC:            Date:   
                                                Size:                                                   

  Type of Test: Shift Position                                                                          
  Strain Weight of Strain                                                                               
  Load:\_\_\_\_\_\_\_\_\_\_\_\_                                                                         
  Test Weight                                                                                           
  Amt:\_\_\_\_\_\_\_\_\_\_\_                                                                            

  Test Load                              /                 /                    /               /       Tolerance

                                                                                                        

                                                                                                        

                                                                                                        

                                                                                                        

                                                                                                        

                                                                                                        

                                                                                                        

                                                                                                        

                                                                                                        
  ------------------------------- ------ ------ ---------- ------ ------------- ------- ------- ------- -----------

Comments:

**Strain Load Test**

At least one strain load test shall be conducted at each end of the
scale. The maximum load applied during the strain load shall be in the
range of 80 to 100 % of scale capacity. The load is to be distributed
over the load-receiving element.

Load the scale with a vehicle or vehicles so the addition of test
weights will provide a gross load of 80 to 100 % of the scale capacity.
Determine the "reference point" for the start of the strain load test.
Add the test weights to one of the ends of the scale without exceeding
the CLC.

Do not conduct a decreasing load test or a return to the strain load
referenced weights as part of this particular strain load test. After
removing the test weights from the end of the scale, reestablish the
strain load reference value and reapply the test weights to verify that
the strain load values repeat the initial values. Conduct a decreasing
load test and return to the strain load reference value as the weights
are removed as part of this test cycle. The return to the strain load
reference value shall be within one-half of a scale division with
consideration given for the creep and for an temperature changes that
may have occurred during this last cycle.

Remove the known test weights and strain load. Zero the scale, place the
strain load on the other end of the scale, and establish the strain load
reference value. **[Do not]{.underline}** use the zero setting mechanism
to set the strain load to zero; the tare mechanism may be used to tare
out the strain load. The gross load zero value is needed to conduct a
decreasing load test as the strain load is removed in the test.

Repeat the strain load test on the other end of the scale. After
reaching the maximum test load for the strain load test, remove the
strain load but leave the known test weights on the scale. The weight
indication for the decreasing load test must be within tolerance for the
known test load. Continue the decreasing load test by removing the known
test weights. Take several readings as the weights are being removed.
When all the weights are removed, record the return zero. The scale must
return to zero within one-half of a scale division. When analyzing the
return to zero, consideration must be given for the length of time the
load was on the scale and for possible temperature changes that may have
occurred during the test.

Acceptance tolerances are applied only to the known test load in the
strain load test.

**Section 8. Strain Test**

  -----------------------------------------------------------------------------
  **Test Load**  **Known        **Indication**   **Error**      **Tolerance**
                 Weight**                                       
  -------------- -------------- ---------------- -------------- ---------------
                                                                

                                                                

                                                                

                                                                

                                                                

                                                                

                                                                

                                                                

                                                                

                                                                

                                                                

                                                                

                                                                
  -----------------------------------------------------------------------------

**Permanence Test**

The permanence test shall be conducted at least 20 days after successful
completion of the initial performance test. Performance during both
tests must be within acceptance tolerances. A minimum of 40 000 lb of
known test weights or 50 % of the CLC, whichever is greater is needed.
At least one complete set of section tests shall be conducted over each
section and at midspan between each section using the known test
weights. At least one strain load test shall be conducted at each end of
the scale. The maximum applied load shall be in the range of 65 to 100 %
of the scale capacity. If a device fails a subsequent permanence test,
the entire permanence test must be repeated.

**Permanence Test Use Requirements for Vehicle Scales**

A minimum of 300 weighing operations are required during the test period
(20-30 days). The manufacture is to log the date, time and weight. Each
entry is to be initialed by the person conducting the weighing. Only
loads which have been applied using a method representative of the
scales intended use can be counted.

**[For vehicle scales with a nominal capacity over 75 000
lb:]{.underline}**

> 50 % of the loads must be above 50 000 lb or 80 % of the CLC,
> whichever is greater and
>
> 100 % of the loads must be above 20 000 lb or 50 % of the CLC,
> whichever is greater.

**[For all other scales:]{.underline}**

> 50 % of the loads must be above 50 % of the scale capacity; and
>
> 100 % of the load must be above 20 % of the scale capacity.

The minimum number of days that a device is required to be in use is 20
days. The committee did not specify that a certain number of weighing
operations needed to be conducted each day for the test period, but
recommended that use of the scale be representative of normal in service
use.

The device will be tested to the CLC on the subsequent type evaluation
(field) performance test.

**Section 9. General Considerations**

The technician shall ensure that the scale systems main elements and
components are NTEP approved, have each been issued an NTEP Certificate
of Conformance (CC), and is a replica of that which is described in the
CC. Only those features and options evaluated and described in the CC
are allowed.

> **1. Suitability of Equipment**
>
> Weighing equipment shall be suitable for the application for which it
> is to be used, and shall conform to the appropriate sections of HB-44
> as correct with respect to its elements of design, including but not
> limited to its weighing capacity, its computing capability, the
> character, number, size, and location of its indicating or recording
> elements, and the value of its smallest division.
>
> **2. Environment**
>
> Equipment shall be suitable for the environment in which it is used
> including, but not limited to, the effects of wind, weather and radio
> frequency interference.
>
> **3. Interchange or Reversal of Parts**
>
> Parts of a device that may readily be interchanged or reversed in the
> course of field assembly, or of normal usage, shall be so constructed
> that their interchange or reversal will not materially affect the
> performance of the device. Parts that may be interchanged or reversed
> in normal field assembly shall be:
>
> a\. constructed to ensure any interchange or reversal does not affect
> the performance of the device, or
>
> b\. marked to show their proper position.

**Section 10.** Status: Scale Meets NTEP Requirements? Yes No

Test Performed By: NTEP:

And Witnessed State:

By: Manufacturer

(The following chart contains the applicable acceptance tolerances)

**Section 11:** Applied Class III L Acceptance Tolerances for 10, 20,
and 50 pound scale divisions

  --------------------------------------------------------------------------
  **Weight          **10 lb            **20 lb            **50 lb  
  applied**         "d"**              "d"**              "d"**    
  ----------------- -------- --------- -------- --------- -------- ---------
                    d        lb        d        lb        d        lb

  Zero              0        0         0        0         0        

  10 000            1        10        0.5      20        0.5      25

  20 000            2        20        1        20        0.5      25

  30 000            3        30        1.5      30        1.0      50

  40 000            4        40        2.0      40        1.0      50

  50 000            5        50        2.5      50        1.0      50

  60 000            6        60        3.0      60        1.5      75

  70 000            7        70        3.5      70        1.5      75

  80 000            8        80        4.0      80        2.0      100

  90 000            9        90        4.5      90        2.0      100

  100 000           10       100       5.0      100       2.0      100

  110 000           N/A      N/A       5.5      110       2.5      125

  120 000           N/A      N/A       6        120       2.5      125

  130 000           N/A      N/A       6.5      130       3        150

  140 000           N/A      N/A       7        140       3        150

  150 000           N/A      N/A       7.5      150       3        150

  160 000           N/A      N/A       8        160       3.5      175

  170 000           N/A      N/A       8.5      170       4        200

  180 000           N/A      N/A       9        180       4        200

  190 000           N/A      N/A       9.5      190       4        200

  200 000           N/A      N/A       10       200       4        200
  --------------------------------------------------------------------------

[^1]: ^1^ For the family, the range of capacities from lowest to highest
    shall not exceed a 10:1 ratio. To cover a wider range of capacities
    additional devices in the family will be tested. If the range of
    capacities is quite narrow and is a ration of less than or equal to
    2:1, it ***may*** be that only one device near the mid-range needs
    to be submitted. For example, a family of scales with a narrow range
    of capacities from 500 lb to 1000 lb, the manufacturer could submit
    one model near the midrange with a capacity of 750 lb. If no
    midrange device is available, the largest capacity device ***may***
    be evaluated. In all cases, requirements found in the items b. c.
    and d. must be met.

    Examples: for a family from 10 lb to 100 lb, a 10 lb and a 100 lb
    would be evaluated

    for a family from 10 lb to 1000 lb, a 10 lb, a 100 lb, and a 1000 lb
    device would be evaluated

    for a family of 30 x 0.01 lb and 50 x 0.01 lb, the 50 lb device
    would be evaluated

    for a family of 30 x 0.01 lb and 50 x 0.02 lb, the 30 lb device
    would be evaluated

    for a family of 15 x 0.005 lb and 30 x 0.01 lb, the 15 lb device
    would be evaluated (meets b., c., & d.)

    for a family of 2500 x 0.5 lb and 5000 x 1 lb, the 2500 lb device
    would be evaluated (meets b., c., & d.)