Interim Agenda of the

**Committee on** **Specifications and Tolerances**

Jack Kane, Chairman

Bureau of Weights and Measures

Department of Labor and Industry

Montana

###### 300 INTRODUCTION

The Specifications and Tolerances (S&T) Committee ("Committee") will
address the following items at its Interim Meeting. All items are listed
below in Table A by Reference Key Number. The headings and subjects
apply to NIST Handbook 44, \"Specifications, Tolerances, and Other
Technical Requirements for Weighing and Measuring Devices.\" The
Appendices to the Report are listed in Table B. In some cases background
information will be provided for an item. The fact that an item appears
on the agenda does not mean that the item will be presented to the
Conference for a vote. The Committee will review its agenda at the
Interim Meeting and may withdraw some items, present some items for
information meant for additional study, issue interpretations, or make
specific recommendations for change to NIST Handbook 44 which will be
presented for a vote at the Annual Meeting.

The recommendations are statements of proposals and are not necessarily
those of the Committee. Suggested revisions to the handbook are shown in
**bold face print** by **~~striking out~~** information to be deleted
and **[underlining]{.underline}** information to be added. Requirements
that are proposed to be nonretroactive are printed in **bold-faced
*italics.***

**Note:** The policy of NIST is to use metric units of measurement in
all of its publications; however, recommendations received by the NCWM
technical committees have been printed in this publication as they were
submitted and may, therefore, contain references to inch-pound units.

**Table A**

**Index to Reference Key Items**

**Reference**

**Key No. Title of Item Page**

[**300** **INTRODUCTION 1**](#introduction)

[310 GENERAL CODE 3](#general-code)

[310-1 G-S.1. Identification; Built-for-Purpose Software Based Devices,
Table G-S.1. Identification, G‑S.1.1. Location of Marking Information
for Not Built-For-Purpose, Software-Based Devices, and Appendix D;
Definition of Not-Built-for-Purpose Device
3](#g-s.1.-identification-built-for-purpose-software-based-devices-table-g-s.1.-identification-gs.1.1.-location-of-marking-information-for-not-built-for-purpose-software-based-devices-and-appendix-d-definition-of-not-built-for-purpose-device)

[310-2 G-T.1. (e) Acceptance Tolerances
10](#g-t.1.-e-acceptance-tolerances)

[320 SCALES 11](#scales)

[320-1 S.1.1. (c) Zero Indication; Requirements for Markings or
Indications for Other than Digital Zero Indications
11](#s.1.1.-c-zero-indication-requirements-for-markings-or-indications-for-other-than-digital-zero-indications)

[320-2 S.1.8.4. Recorded Representations, Point-of-Sale Systems;
Footnote 1
12](#s.1.8.4.-recorded-representations-point-of-sale-systems-footnote-1)

[320-3 S.1.8.5. Computing Scale Interfaced to a Cash Register
13](#s.1.8.5.-computing-scale-interfaced-to-a-cash-register)

[320-4 S.2.1.3. Scales Equipped with an Automatic Zero-Setting Mechanism
(Zero Tracking), S.2.1.3.1. For Scales Manufactured Before January 1,
200X; Maximum Load Rezeroed, S.2.1.3.2. For Scales Manufactured After
January 1, 200X; Maximum Load Rezeroed, and S.2.1.3.3. Automatic
Zero-Setting Mechanism (Zero Tracking) on Class III L Devices
14](#s.2.1.3.-scales-equipped-with-an-automatic-zero-setting-mechanism-zero-tracking-s.2.1.3.1.-for-scales-manufactured-before-january-1-200x-maximum-load-rezeroed-s.2.1.3.2.-for-scales-manufactured-after-january-1-200x-maximum-load-rezeroed-and-s.2.1.3.3.-automatic-zero-setting-mechanism-zero-tracking-on-class-iii-l-devices)

[320-5 Table S.6.3.b. Notes For Table S.6.3.a.Note 3; Nominal Capacity
and Value of the Scale Division and Appendix D; Definition of Reading
Face
16](#table-s.6.3.b.-notes-for-table-s.6.3.a.note-3-nominal-capacity-and-value-of-the-scale-division-and-appendix-d-definition-of-reading-face)

[320-6 N.1.3.1. Bench or Counter Scales, N.1.3.8. All Other Scales
Except Crane Scales, Hanging Scales, Hopper Scales, Wheel--Load
Weighers, and Portable Axle-Load Weighers, and Appendix D; Definitions
of Bench Scale and Counter Scale
18](#n.1.3.1.-bench-or-counter-scales-n.1.3.8.-all-other-scales-except-crane-scales-hanging-scales-hopper-scales-wheelload-weighers-and-portable-axle-load-weighers-and-appendix-d-definitions-of-bench-scale-and-counter-scale)

[320-7 Table 6 Maintenance Tolerances
21](#table-6-maintenance-tolerances)

[320-8 T.N.4.5. Time Dependence, T.N.4.5.1. Non-automatic Instruments
Class II, III, and IIII Indications, T.N.4.5.2. Weighing Instrument
Class III Indications, T.N.4.6. Time Dependence (Creep) for Load Cells
During Type Evaluation, T.N.4.6.1. Reading Error, and T.N.4.6.2. MPE
Using Apportionment Factors
24](#t.n.4.5.-time-dependence-t.n.4.5.1.-non-automatic-instruments-class-ii-iii-and-iiii-indications-t.n.4.5.2.-weighing-instrument-class-iii-indications-t.n.4.6.-time-dependence-creep-for-load-cells-during-type-evaluation-t.n.4.6.1.-reading-error-and-t.n.4.6.2.-mpe-using-apportionment-factors)

[320-9 List of International Symbols Noted as Acceptable
27](#list-of-international-symbols-noted-as-acceptable)

[321 BELT-CONVEYOR SCALE SYSTEMS 29](#belt-conveyor-scale-systems)

[321-1 UR.3.4. Diversion of Measured Product
29](#ur.3.4.-diversion-of-measured-product)

[322 AUTOMATIC BULK WEIGHING SYSTEMS
30](#automatic-bulk-weighing-systems)

[322-1 Tolerances 30](#tolerances)

[330 LIQUID-MEASURING DEVICES 37](#liquid-measuring-devices)

[330-1 S.1.6.1.1. Indication of Delivery; Suppression Until Normal
Delivery Pressure
37](#s.1.6.1.1.-indication-of-delivery-suppression-until-normal-delivery-pressure)

[330-2 N.4.2.2. Retail Motor-Fuel Devices
37](#n.4.2.2.-retail-motor-fuel-devices)

[331 VEHICLE-TANK METERS 39](#vehicle-tank-meters)

[331-1 Recognition of Temperature Compensation
39](#recognition-of-temperature-compensation)

[331-2 S.1.4.1. Display of Unit Price
42](#s.1.4.1.-display-of-unit-price)

[331-3 S.2.4. Zero Set-Back Interlock, Vehicle-Tank Meters
42](#s.2.4.-zero-set-back-interlock-vehicle-tank-meters)

[331-4 N.4.2. Special Tests (Except Milk-Measuring Systems), N.4.5.
Product Depletion Test, and T.4. Product Depletion Test
43](#n.4.2.-special-tests-except-milk-measuring-systems-n.4.5.-product-depletion-test-and-t.4.-product-depletion-test)

[336 WATER METERS 48](#water-meters)

[336-1 Table N.4.2. Flow Rate and Draft Size for Water Meters Special
Tests
48](#table-n.4.2.-flow-rate-and-draft-size-for-water-meters-special-tests)

[360 OTHER ITEMS 49](#other-items)

[360-1 Proposed Section 5.59. Electronic Livestock, Meat, and Poultry
Evaluation Systems and/or Devices-Tentative Code
49](#proposed-section-5.59.-electronic-livestock-meat-and-poultry-evaluation-systems-andor-devices-tentative-code)

[360-2 Appendix A Fundamental Considerations 3. Testing Apparatus; 3.1
Adequacy, 3.2 Tolerances for Standards and Footnote 2, and 3.3 Accuracy
of Standards
51](#appendix-a-fundamental-considerations-3.-testing-apparatus-3.1-adequacy-3.2-tolerances-for-standards-and-footnote-2-and-3.3-accuracy-of-standards)

[360-3 International Organization of Legal Metrology (OIML) Report
53](#international-organization-of-legal-metrology-oiml-report)

[360-4 Add International Terms that are Synonymous to NIST Handbook 44
Terms in Appendix D; Definitions
53](#add-international-terms-that-are-synonymous-to-nist-handbook-44-terms-in-appendix-d-definitions)

[360-5 Developing Issues 54](#developing-issues)

**Table B**

**Appendices**

**Appendix Title Page**

[A Item 360-5: Developing Issues A1](#appendixa)

**Details of all Items**

(In order by Reference Key Number)

###### 310 GENERAL CODE

####### 310-1 G-S.1. Identification; Built-for-Purpose Software Based Devices, Table G-S.1. Identification, G‑S.1.1. Location of Marking Information for Not Built-For-Purpose, Software-Based Devices, and Appendix D; Definition of Not-Built-for-Purpose Device

**Source:** Carryover Item 310-1.

**Recommendation:** Amend Section 1.10 General Code paragraph G-S.1.
Identification, delete paragraph G-S.1.1., renumbering paragraph
G-S.1.2., add new Table G-S.1., and add new definition for
"not-built-for-purpose" devices in Appendix D as follows:

> **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 marked **[in accordance with
> Table G-S.1]{.underline}.** 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 not-built-for-purpose, **~~software~~
> [microprocessor]{.underline}**-based devices, a nonrepetitive serial
> number;*
>
> *\[Nonretroactive as of January 1, 1968\]*
>
> (Amended 2003)
>
> \(e\) for **~~not built-for-purpose, software~~
> [microprocessor]{.underline}**-based devices the current software
> version designation **[or revision number]{.underline}**;
>
> (Added 2003)
>
> *(f) the serial number shall be prefaced by words, an abbreviation, or
> a symbol, that clearly identifies the number as the required serial
> number;*
>
> *\[Nonretroactive as of January 1, 1986\]*
>
> *(g) 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.); and*
>
> *\[Nonretroactive as of January 1, 2001\]*
>
> *(h) for devices that have an NTEP Certificate of Conformance (CC),
> the CC Number or a corresponding CC addendum 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
> 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, 2000, 2001 and 2003)

G-S.1.1. Location of Marking Information for Not Built-For-Purpose,
Software-Based Devices. - For not built-for-purpose, software-based
devices, the following shall apply:

> ***~~(a) the manufacturer or distributor and the model designation
> shall be continuously displayed or marked on the device (see note
> below), or~~***
>
> ***~~(b) the Certificate of Conformance (CC) Number shall be
> continuously displayed or marked on the device (see note below),
> or~~***
>
> ***~~(c) all required information in G-S.1. Identification. (a), (b),
> (c), (e), and (h) shall be continuously displayed. Alternatively, a
> clearly identified "view only" System Identification, G-S.1.
> Identification, or Weights and Measures Identification shall 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.~~***
>
> ***~~Note: Clear instructions for accessing the remaining required
> G-S.1. 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.~~***
>
> ***~~\[Nonretroactive as of January 1, 2004\]~~***
>
> **~~(Added 2003)~~**
>
> ***G‑S.1.1~~2~~. Remanufactured Devices and Remanufactured Main
> Elements. -** All remanufactured devices and remanufactured main
> elements shall be clearly and permanently marked for the purposes 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.*
>
> *\[Nonretroactive as of January 1, 2002\]*
>
> (Added 2001)
>
> **Note:** Definitions for "manufactured device," "repaired device,"
> and "repaired element" are also included (along with definitions for
> "remanufactured device" and "remanufactured element") in Appendix D,
> Definitions.

+----+-------------------------+--------------+-----------------------+
| ## |                         |              |                       |
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+----+-------------------------+--------------+-----------------------+
|    |                         | **[Built-fo  | **[Not                |
|    |                         | r-Purpose]{. | Built-for-P           |
|    |                         | underline}** | urpose]{.underline}** |
|    |                         |              |                       |
|    |                         | **[          | **[Instruments,       |
|    |                         | Instruments, | Elements, or          |
|    |                         | Elements, or | S                     |
|    |                         | Systems]{.   | ystems]{.underline}** |
|    |                         | underline}** |                       |
+----+-------------------------+--------------+-----------------------+
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| [N |                         | underline}** | *[D^2^]{.underline}** |
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+----+-------------------------+--------------+-----------------------+
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+----+-------------------------+--------------+-----------------------+
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| ** |                         |              |                       |
+----+-------------------------+--------------+-----------------------+
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| ri |                         |              |                       |
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| ** |                         |              |                       |
+----+-------------------------+--------------+-----------------------+
| *  |                         | **[M or      | **[D]{.underline}**   |
| *[ |                         | D]{.         |                       |
| Re |                         | underline}** |                       |
| vi |                         |              |                       |
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+----+-------------------------+--------------+-----------------------+
| ** |                         | **[M or      | *                     |
| [C |                         | D]{.         | *[D^2^]{.underline}** |
| er |                         | underline}** |                       |
| ti |                         |              |                       |
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| ** |                         |              |                       |
+----+-------------------------+--------------+-----------------------+
| ** | **[Physically and       |              |                       |
| [M | permanently             |              |                       |
| :] | marked]{.underline}**   |              |                       |
| {. |                         |              |                       |
| un |                         |              |                       |
| de |                         |              |                       |
| rl |                         |              |                       |
| in |                         |              |                       |
| e} |                         |              |                       |
| ** |                         |              |                       |
+----+-------------------------+--------------+-----------------------+
| ** | ***[Either: (1)         |              |                       |
| [D | displayed by accessing  |              |                       |
| :] | a clearly identified    |              |                       |
| {. | view only System        |              |                       |
| un | Identification, G-S.1.  |              |                       |
| de | Identification, or      |              |                       |
| rl | Weights and Measures    |              |                       |
| in | Identification          |              |                       |
| e} | 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, or\          |              |                       |
|    | (2) continuously        |              |                       |
|    | displayed. Note: For    |              |                       |
|    | revision or software    |              |                       |
|    | version number, clear   |              |                       |
|    | instructions for        |              |                       |
|    | accessing this          |              |                       |
|    | information shall be    |              |                       |
|    | listed on the CC in     |              |                       |
|    | lieu of the "Help"      |              |                       |
|    | menu. Required          |              |                       |
|    | information includes    |              |                       |
|    | that information        |              |                       |
|    | necessary to identify   |              |                       |
|    | that the software in    |              |                       |
|    | the device is the same  |              |                       |
|    | or subsequent type that |              |                       |
|    | was                     |              |                       |
|    | eva                     |              |                       |
|    | luated.]{.underline}*** |              |                       |
|    |                         |              |                       |
|    | ***[(Nonretroactive as  |              |                       |
|    | of January              |              |                       |
|    | 2004)]{.underline}***   |              |                       |
+----+-------------------------+--------------+-----------------------+
| *  | ***[As a minimum, the   |              |                       |
| *[ | model designation       |              |                       |
| No | (positively identifying |              |                       |
| te | the pattern, design,    |              |                       |
| 1  | type, series, generic,  |              |                       |
| :] | or trademark            |              |                       |
| {. | designation) must be    |              |                       |
| un | marked on the device.   |              |                       |
| de | If the model            |              |                       |
| rl | designation changes     |              |                       |
| in | with differing          |              |                       |
| e} | parameters such as      |              |                       |
| ** | size, features,         |              |                       |
|    | options, intended       |              |                       |
|    | application, not        |              |                       |
|    | Handbook 44 compliant,  |              |                       |
|    | construction, etc., the |              |                       |
|    | specific model          |              |                       |
|    | designation shall be    |              |                       |
|    | physically marked or    |              |                       |
|    | continuously displayed  |              |                       |
|    | or be capable of being  |              |                       |
|    | dis                     |              |                       |
|    | played.]{.underline}*** |              |                       |
|    |                         |              |                       |
|    | ***[(Nonretroactive as  |              |                       |
|    | of January              |              |                       |
|    | 200X)]{.underline}***   |              |                       |
+----+-------------------------+--------------+-----------------------+
| *  | ***[As a minimum,       |              |                       |
| *[ | either the manufacturer |              |                       |
| No | or distributor and the  |              |                       |
| te | model designation, or   |              |                       |
| 2  | the CC Number shall be  |              |                       |
| :] | continuously displayed. |              |                       |
| {. | Clear instructions for  |              |                       |
| un | accessing the remaining |              |                       |
| de | required                |              |                       |
| rl | G-S.1.information shall |              |                       |
| in | be listed on the CC,    |              |                       |
| e} | which may be available  |              |                       |
| ** | as an unaltered copy of |              |                       |
|    | the CC printed by the   |              |                       |
|    | device or through       |              |                       |
|    | another on-site         |              |                       |
|    | device.]{.underline}*** |              |                       |
|    |                         |              |                       |
|    | ***[(Nonretroactive as  |              |                       |
|    | of January              |              |                       |
|    | 200X)]{.underline}***   |              |                       |
+----+-------------------------+--------------+-----------------------+

**Definition: [Not-built-for-purpose device. Any main device or element
which was not originally manufactured with the intent that it be used
as, or part of, a weighing or measuring device or system.]{.underline}**

Alternate Recommendation: NIST Weights and Measures Division (WMD) and
the National Type Evaluation Technical Committee (NTETC) Weighing Sector
recommend the following amendments:

Amend General Code paragraph G-A.1. Commercial and Law Enforcement
Equipment as follows:

> **G-A.1. Commercial and Law Enforcement Equipment. - These
> specifications, toleran­ces, and other technical requirements apply as
> follows:**
>
> \(a\) To commercial weighing and measuring [devices or
> systems]{.underline} equipment; that is, to weights, and
> measures[,]{.underline} and weighing and measuring devices [or
> systems]{.underline} com­mercially used or employed in establishing the
> size, quantity, extent, area, or meas­urement of quantities, things,
> produce, or articles for distributed or consumed, purchased, offered,
> or submitted for sale, hire, or award, or in computing any basic
> charge or payment for services rendered on the basis of [quantity
> determination]{.underline} weight or measure.
>
> **(b) To any accessory attached to or used in connection with a
> commercial ~~weighing or~~ measuring device when such accessory is so
> designed that its operation affects the accuracy of the device.**
>
> \(c\) To ~~weighing and~~ measuring devices or systems ~~equipment~~
> in official use for the enforcement of law or for the collection of
> statistical information by government agencies.
>
> **(These requirements should be used as a guide by the weights and
> measures official when, upon request, courtesy examinations of
> noncom­mercial equipment are made.)**

Amend General Code paragraph G-S.1. Identification as follows:

> **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 marked [in accordance with Table
> G-S.1]{.underline}. 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[,]{.underline} ~~or~~ design[, or metrological version
> o]{.underline}r [revision]{.underline} of the device [in accordance
> with Table G-S.1]{.underline};**
>
> ***(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 not-built-for-purpose, ~~software-based~~
> [electronic]{.underline} devices, a nonrepetitive serial number;***
>
> ***\[Nonretroactive as of January 1, 1968\]***
>
> **~~(e) for not-built-for purpose, software-based devices the current
> software version designation;~~**
>
> **~~(Added 2003)~~**
>
> ***([e]{.underline}~~f~~) 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]{.underline}~~g~~) 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]{.underline}~~h~~) ~~F~~[f]{.underline}or devices that have an
> NTEP Certificate of Conformance (CC), the CC Number or a corresponding
> CC addendum 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 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, 2000, 2001 and 2003)**

Delete General Code paragraph G-S.1.1. Location of Marking Information
for Not-Built-for-Purpose, Software-based Devices and renumber G-S.1.2.
Remanufactured Devices and Remanufactured Main Elements as follows:

G-S.1.1. Location of Marking Information for Not-Built-for-Purpose,
Software-based Devices. - For not-built-for-purpose, software-based
devices, the following shall apply:

> ***~~(a) the manufacturer or distributor and the model designation
> shall be continuously displayed or marked on the device (see note
> below), or~~***
>
> ***~~(b) the Certificate of Conformance (CC) Number shall be
> continuously displayed or marked on the device (see note below),
> or~~***
>
> ***~~(c) all required information in G-S.1. Identification. (a), (b),
> (c), (e), and (h) shall be continuously displayed. Alternatively, a
> clearly identified "view only" System Identification, G-S.1.
> Identification, or Weights and Measures Identification shall 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.~~***
>
> ***~~Note: Clear instructions for accessing the remaining required
> G-S.1. 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.~~***
>
> ***~~\[Nonretroactive as of January 1, 2004\]~~***
>
> **~~(Added 2003)~~**
>
> ***G‑S.1.[1]{.underline}~~2~~. Remanufactured Devices and
> Remanufactured Main Elements. - All remanufactured devices and
> remanufactured main elements shall be clearly and permanently marked
> for the purposes 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.***
>
> ***\[Nonretroactive as of January 1, 2002\]***
>
> **(Added 2001)**
>
> **Note: Definitions for "manufactured device," "repaired device," and
> "repaired element" are also included (along with definitions for
> "remanufactured device" and "remanufactured element") in Appendix D,
> Definitions.**

Add new Table G-S.1. Identification as follows:

+----+----------------------+----------------------+-----------------+
| ## |                      |                      |                 |
| ## |                      |                      |                 |
|  [ |                      |                      |                 |
| Ta |                      |                      |                 |
| bl |                      |                      |                 |
| e  |                      |                      |                 |
| G- |                      |                      |                 |
| S. |                      |                      |                 |
| 1. |                      |                      |                 |
|  I |                      |                      |                 |
| de |                      |                      |                 |
| nt |                      |                      |                 |
| if |                      |                      |                 |
| ic |                      |                      |                 |
| at |                      |                      |                 |
| io |                      |                      |                 |
| n] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
|    |                      | **[Built-for-Pu      | **[Not-Bu       |
|    |                      | rpose]{.underline}** | ilt-for-Purpose |
|    |                      |                      | ]{.underline}** |
|    |                      | **[Instruments,      |                 |
|    |                      | Elements, or         | **[Devices or   |
|    |                      | Sy                   | Elements        |
|    |                      | stems]{.underline}** | ]{.underline}** |
+----+----------------------+----------------------+-----------------+
| ** |                      | **[M]{.underline}**  | **[D^2^         |
| [N |                      |                      | ]{.underline}** |
| am |                      |                      |                 |
| e, |                      |                      |                 |
| i  |                      |                      |                 |
| ni |                      |                      |                 |
| ti |                      |                      |                 |
| al |                      |                      |                 |
| s, |                      |                      |                 |
| or |                      |                      |                 |
| t  |                      |                      |                 |
| ra |                      |                      |                 |
| de |                      |                      |                 |
| ma |                      |                      |                 |
| rk |                      |                      |                 |
| of |                      |                      |                 |
| t  |                      |                      |                 |
| he |                      |                      |                 |
| m  |                      |                      |                 |
| an |                      |                      |                 |
| uf |                      |                      |                 |
| ac |                      |                      |                 |
| tu |                      |                      |                 |
| re |                      |                      |                 |
| or |                      |                      |                 |
| di |                      |                      |                 |
| st |                      |                      |                 |
| ri |                      |                      |                 |
| bu |                      |                      |                 |
| to |                      |                      |                 |
| r] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
| ** |                      | **                   | **[D^2^         |
| [M |                      | [M^1^]{.underline}** | ]{.underline}** |
| od |                      |                      |                 |
| el |                      |                      |                 |
| de |                      |                      |                 |
| si |                      |                      |                 |
| gn |                      |                      |                 |
| at |                      |                      |                 |
| io |                      |                      |                 |
| n] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
| *  |                      | **[M^1^ or           |                 |
| *[ |                      | D]{.underline}**     |                 |
| Sp |                      |                      |                 |
| ec |                      |                      |                 |
| if |                      |                      |                 |
| ic |                      |                      |                 |
| m  |                      |                      |                 |
| od |                      |                      |                 |
| el |                      |                      |                 |
| d  |                      |                      |                 |
| es |                      |                      |                 |
| ig |                      |                      |                 |
| na |                      |                      |                 |
| ti |                      |                      |                 |
| on |                      |                      |                 |
| ^3 |                      |                      |                 |
| ^] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
| *  |                      | **[M]{.underline}**  | **[Not          |
| *[ |                      |                      | required        |
| Se |                      |                      | ]{.underline}** |
| ri |                      |                      |                 |
| al |                      |                      |                 |
| n  |                      |                      |                 |
| um |                      |                      |                 |
| be |                      |                      |                 |
| r] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
| ** |                      | **NA**               | **[D            |
| [M |                      |                      | ]{.underline}** |
| et |                      |                      |                 |
| ro |                      |                      |                 |
| lo |                      |                      |                 |
| gi |                      |                      |                 |
| ca |                      |                      |                 |
| l] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| v  |                      |                      |                 |
| er |                      |                      |                 |
| si |                      |                      |                 |
| on |                      |                      |                 |
| or |                      |                      |                 |
| [  |                      |                      |                 |
| re |                      |                      |                 |
| vi |                      |                      |                 |
| si |                      |                      |                 |
| on |                      |                      |                 |
| d  |                      |                      |                 |
| es |                      |                      |                 |
| ig |                      |                      |                 |
| na |                      |                      |                 |
| ti |                      |                      |                 |
| on |                      |                      |                 |
| ^3 |                      |                      |                 |
| ^] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
| *  |                      | **[M or              | **[D^2^         |
| *C |                      | D]{.underline}**     | ]{.underline}** |
| er |                      |                      |                 |
| ti |                      |                      |                 |
| fi |                      |                      |                 |
| ca |                      |                      |                 |
| te |                      |                      |                 |
| of |                      |                      |                 |
| C  |                      |                      |                 |
| on |                      |                      |                 |
| fo |                      |                      |                 |
| rm |                      |                      |                 |
| an |                      |                      |                 |
| ce |                      |                      |                 |
| (C |                      |                      |                 |
| C) |                      |                      |                 |
| nu |                      |                      |                 |
| mb |                      |                      |                 |
| er |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
| ** | **Physically and     |                      |                 |
| [M | permanently marked** |                      |                 |
| :] |                      |                      |                 |
| {. |                      |                      |                 |
| un |                      |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+
| ** | ***[Either: (1)      |                      |                 |
| [D | displayed by         |                      |                 |
| :] | accessing a clearly  |                      |                 |
| {. | identified view only |                      |                 |
| un | System               |                      |                 |
| de | Identification,      |                      |                 |
| rl | G-S.1.               |                      |                 |
| in | Identification, or   |                      |                 |
| e} | Weights and Measures |                      |                 |
| ** | Identification       |                      |                 |
|    | accessible through   |                      |                 |
|    | the "Help" menu.     |                      |                 |
|    | Required information |                      |                 |
|    | includes that        |                      |                 |
|    | information          |                      |                 |
|    | necessary to         |                      |                 |
|    | identify the         |                      |                 |
|    | software in the      |                      |                 |
|    | device is the same   |                      |                 |
|    | type that was        |                      |                 |
|    | evaluated,           |                      |                 |
|    | or]{.underline}***   |                      |                 |
|    |                      |                      |                 |
|    | ***[(2) continuously |                      |                 |
|    | displayed. Note: For |                      |                 |
|    | revision or software |                      |                 |
|    | version number,      |                      |                 |
|    | clear instructions   |                      |                 |
|    | for accessing this   |                      |                 |
|    | information shall be |                      |                 |
|    | listed on the CC in  |                      |                 |
|    | lieu of the "Help"   |                      |                 |
|    | menu. Required       |                      |                 |
|    | information includes |                      |                 |
|    | that information     |                      |                 |
|    | necessary to         |                      |                 |
|    | identify the         |                      |                 |
|    | software in the      |                      |                 |
|    | device is the same   |                      |                 |
|    | or subsequent type   |                      |                 |
|    | that was             |                      |                 |
|    | evalua               |                      |                 |
|    | ted.]{.underline}*** |                      |                 |
|    |                      |                      |                 |
|    | ***[(Nonretroactive  |                      |                 |
|    | as of January        |                      |                 |
|    | 2                    |                      |                 |
|    | 004)]{.underline}*** |                      |                 |
+----+----------------------+----------------------+-----------------+
| *  | ***[As a minimum,    |                      |                 |
| *[ | the model            |                      |                 |
| No | designation          |                      |                 |
| te | (positively          |                      |                 |
| 1  | identifying the      |                      |                 |
| :] | pattern, design,     |                      |                 |
| {. | type, series,        |                      |                 |
| un | generic, or          |                      |                 |
| de | trademark            |                      |                 |
| rl | designation) must be |                      |                 |
| in | marked on the        |                      |                 |
| e} | device. If the model |                      |                 |
| ** | designation changes  |                      |                 |
|    | with differing       |                      |                 |
|    | parameters such as   |                      |                 |
|    | size, features,      |                      |                 |
|    | options, intended    |                      |                 |
|    | application, not     |                      |                 |
|    | Handbook 44          |                      |                 |
|    | compliant,           |                      |                 |
|    | construction, etc.,  |                      |                 |
|    | the specific model   |                      |                 |
|    | designation shall be |                      |                 |
|    | physically marked or |                      |                 |
|    | continuously         |                      |                 |
|    | displayed or be      |                      |                 |
|    | capable of being     |                      |                 |
|    | displa               |                      |                 |
|    | yed.]{.underline}*** |                      |                 |
|    |                      |                      |                 |
|    | ***[(Nonretroactive  |                      |                 |
|    | as of January        |                      |                 |
|    | 2                    |                      |                 |
|    | 00X)]{.underline}*** |                      |                 |
+----+----------------------+----------------------+-----------------+
| *  | ***[As a minimum,    |                      |                 |
| *[ | either the           |                      |                 |
| No | manufacturer or      |                      |                 |
| te | distributor and the  |                      |                 |
| 2  | model designation,   |                      |                 |
| :] | or the CC Number     |                      |                 |
| {. | shall be             |                      |                 |
| un | continuously         |                      |                 |
| de | displayed. Clear     |                      |                 |
| rl | instructions for     |                      |                 |
| in | accessing the        |                      |                 |
| e} | remaining required   |                      |                 |
| ** | G‑S.1.information    |                      |                 |
|    | shall be listed on   |                      |                 |
|    | the CC~~, which may  |                      |                 |
|    | be available as an   |                      |                 |
|    | unaltered copy of    |                      |                 |
|    | the CC or printed by |                      |                 |
|    | the device or        |                      |                 |
|    | through another      |                      |                 |
|    | on-site              |                      |                 |
|    | devic                |                      |                 |
|    | e~~.]{.underline}*** |                      |                 |
|    |                      |                      |                 |
|    | ***[(Nonretroactive  |                      |                 |
|    | as of January        |                      |                 |
|    | 2                    |                      |                 |
|    | 00X)]{.underline}*** |                      |                 |
+----+----------------------+----------------------+-----------------+
| *  | ***[Metrological     |                      |                 |
| *[ | version or revision  |                      |                 |
| No | designation for      |                      |                 |
| te | devices with         |                      |                 |
| 3  | downloadable or      |                      |                 |
| :] | field programmable   |                      |                 |
| {. | softw                |                      |                 |
| un | are.]{.underline}*** |                      |                 |
| de |                      |                      |                 |
| rl |                      |                      |                 |
| in |                      |                      |                 |
| e} |                      |                      |                 |
| ** |                      |                      |                 |
+----+----------------------+----------------------+-----------------+

Add new General Code Terms and Definitions as follows:

> **[measuring device (general) -- A device (instrument) intended to be
> used to make measurements, alone or in conjunction with supplementary
> devices. (VIM)]{.underline}**
>
> [measuring system (general) - An instrument or group of instruments
> that serves to make measurements, alone or in conjunction with
> supplementary devices. (VIM)]{.underline}
>
> [electronic devices -- A device operating by the principles of
> electronics, which may consist of one or more subassemblies and
> performs a specific function(s). (ASTM)]{.underline}
>
> [not-built-for-purpose device \-- Any electronic peripheral or
> auxiliary device or element which was not originally manufactured with
> the intent that it be used as, or part of, a weighing or measuring
> device or system.]{.underline}
>
> [metrological software version (revision) -- A designation that
> specifically defines the metrological software version used in a
> measuring instrument, system, or peripheral/auxiliary device with
> field programmable or downloadable metrological
> software).]{.underline}
>
> [weighing device (instrument) \-- A measuring instrument that serves
> to determine the mass of a body by using the action of gravity on said
> body. The instrument may also be used to determine other quantities,
> magnitudes, parameters or characteristics related to the determined
> mass. According to its method of operation, a weighing instrument is
> classified as an automatic or non-automatic instrument. (OIML R
> 76)]{.underline}

Amend the definition for built-for-purpose device as follows:

> built-for-purpose device -- Any main[, peripheral, or
> auxiliary]{.underline} device or element which was manufactured with
> the intent that it be used as, or part of, a ~~weighing or~~ measuring
> device or system.

**Background/Discussion:** At the 2003 NCWM Annual Meeting, the
Committee agreed that a proposal submitted by the Scale Manufacturers
Association (SMA), to include "built-for-purpose" devices in G-S.1. and
to define "not-built-for-purpose" devices should remain an information
item. At the 2004 NCWM Interim Meeting, the Committee heard both support
and opposition to the proposal developed by the Measuring Sector at its
October 2003 Meeting and shown as the recommendation above. There was
general support for the table developed by WMD as modified by the
Measuring Sector and for the definition of "not-built-for-purpose"
device. The SMA opposed the Measuring Sector's proposal because the
language imposes different requirements for "built-for-purpose" and
"not-built-for-purpose" devices. The primary SMA opposition was that the
Measuring Sector proposal requires "built-for-purpose" devices to have
the name of the manufacturer, the model designation, and a nonrepetitive
serial number physically marked on the device and could be permanently
marked or displayed on "not-built-for-purpose" devices. The SMA believed
that "built-for-purpose" devices should have the same option of marking
or displaying the information on the device. One official stated that
the revision number or software version number should be marked or
displayed on "built-for-purpose" devices as is now required on
not-built-for-purpose devices. The official expressed concern that
changes could be made to the programming of some "built-for-purpose"
devices that would not be readily apparent to the official. Marking or
displaying a new version number will assist officials in determining
whether or not the metrological functions of the device are the same as
the model submitted for NTEP evaluation. The Committee agreed that the
revision number or software version numbers should be available to
officials and modified Table G-S.1. to require that "built-for-purpose"
devices have the current revision number or software version displayed
or permanently marked on the device. The Committee also agreed that
Handbook 44, OIML R-76 "Non-automatic weighing instruments," and OIML
R117 "Measuring systems for liquids other than water" all require the
name of the manufacturer, a model designation, and serial number
information to be marked on a "built-for-purpose" device. The Committee
agreed that continuing the requirement for marking basic identification
information did not place an additional burden on "built-for-purpose"
device manufacturers. The Committee agreed to present Item 310-1 for
adoption at the 2004 NCWM Annual Meeting.

At the 2004 Annual Meeting, during the open hearing the SMA stated that
item 310-1 should not go forward for a vote because the ballot of the
NTETC Weighing Sector failed to express clear support for the item. One
manufacturer stated that the term microprocessor is not appropriate
because their devices contain several of those components. Another
manufacturer stated that the requirement for marking the current
software version number would place an unrealistic burden on their
company. The Committee agreed that sufficient opposition and questions
were raised during the open hearing to demonstrate that the item was not
sufficiently developed to be a voting item at that meeting. The
Committee made Item 310-1 an information item and returned it to both
Sectors for further development.

At its Fall 2004 Meeting, the Weighing Sector reviewed the information
from the Committee, previous Sector recommendations, and information
regarding international requirements. The Sector also reviewed an
alternate recommendation for S&T agenda item 310-1 from WMD, which
includes changes to G-A.1. The most significant change to G-A.1. is the
elimination of the term "weighing" and to utilize the more general term
"measuring" for devices or systems that measure mass, length, or volume.
The WMD recommendation included new and amended definitions and
addressed concerns raised during the Committee's deliberations on this
item. The new definition for a "weighing device" describes it a
"measuring instrument" that serves to determine the mass of a body by
using the action of gravity on said body. Although this change is a
departure from conventional terminology for "scales" it is consistent
with OIML recommendations and facilitates harmonization between Handbook
44 and international standards. The definition for
"not-built-for-purpose" devices was revised to clarify their use as
auxiliary or peripheral equipment devices and systems. Some of the
private Sector members repeated their previous comments that current
technology permits the display of required identification information
and that there is no technical justification for treating these devices
differently than not-built-for-purpose devices. Additionally, the
proposed definitions would reclassify most measuring devices according
to the physical property being measured (e.g., liquid, length, vapor,
cryogenic, etc.) Since the proposed definition for measuring devices
applies to all types of devices, some concern was expressed that laws
and regulations would need to be changed because many states' statutes
refer to "weighing and measuring" device terminology. The Weighing
Sector supported the alternate recommendation with changes in the
marking requirement for Metrological version or revision designation in
Table G-S.1. for "built-for-purpose" instruments, elements, or systems
from "marked or displayed (M or D)" to "not applicable (NA)" and the
added "weighing device" definition. The Weighing Sector agreed to send
the alternate proposal to the NTETC Measuring Sector, the WWMA, and
Southern Weights and Measures Association (SWMA) for their review and
comments.

At the October 2004 Northeastern Weights and Measures Association
Meeting, several participants indicated that the requirements for
"Built-for-Purpose" and "Not Built-for-Purpose" devices should be the
same. An Associate member commented that for a manufacturer to report to
NTEP every time a metrological change is made to software is
unnecessary. A certain amount of trust must be placed in the
manufacturer. This member also explained that manufacturers want to be
innovative with software development and expressed concern that
requirements for a current software version number may hamper future
innovations.

At its October 2004 Meeting the Measuring Sector reviewed the original
alternate recommendation developed by WMD. The alternate proposal was
similar to the alternate proposal above with the exception of the
marking requirement for Metrological version or revision designation in
Table G-S.1. for "built-for-purpose" instruments, elements, or systems
and the addition of a "weighing device" definition. In the proposal
above the requirement is "NA." In the version on the agenda of both
Sectors the requirement was for it to be "M or D." The members agreed
that the majority of the changes proposed to include built-for-purpose
devices concern weighing devices and are not applicable to measuring
devices. One member objected to the proposal to eliminate references in
G-A.1. to the term "weighing " and the dual use of the term "measuring"
to refer to all forms of measurement including weighing. The member
stated that the proposal was in conflict with the historic use of the
term "measurement" in the United States. The Sector agreed to forward a
recommendation to the Committee that the proposal to include
"built-for-purpose" devices in G-S.1. Identification be withdrawn from
the S&T agenda.

At its October 2004 Meeting the SWMA S&T Committee did not include this
item on its agenda for a vote of the members; however, it did accept
comments during the open hearings. The SWMA learned that the SMA wants
the requirements for marking Name, Model, and Serial number in Table
G-S.1. for "built-for purpose" instruments, elements, or systems to
allow either physically marked (M) or displayed (D) just the same as the
requirements in the table for specific model designation or CC. One
manufacturer of retail motor-fuel dispensers supported the
recommendation provided the requirement for metrological revision
designation for "built-for purpose" instruments, elements, or systems is
changed for M or D to NA as recommended by the Weighing Sector. The SWMA
agreed to forward the comments to the Committee without a position.

The SMA opposes this item in its current format and recommends that the
NCWM form a Working Group to further develop the proposal.

For more background information, refer to the 2003 and 2004 S&T Final
Report.

####### 310-2 G-T.1. (e) Acceptance Tolerances 

**Source:** National Type Evaluation Technical Committee (NTETC)
Measuring Sector:

**Recommendation: Modify Handbook 44 Section 1.10 Paragraph G-T.1. (e)
Acceptance Tolerances as follows:**

> **G-T.1. Acceptance Tolerances. - Acceptance tolerances shall apply
> to:**
>
> **(a) equipment to be put into commercial use for the first time;**
>
> \(b\) equipment that has been placed in commercial service within the
> preceding 30 days and is being officially tested for the first time;
>
> \(c\) equipment that has been returned to commercial service follow­ing
> official rejection for failure to conform to per­formance requirements
> and is being offi­cially tested for the first time within 30 days after
> corrective service;
>
> \(d\) equipment that is being officially tested for the first time
> within 30 days after major reconditioning or overhaul; and
>
> **(e) equipment undergoing type evaluation [(special test tolerances
> are not applicable)]{.underline}.**

**Discussion/Background:** At its October 2004 NTETC Meeting, the
Measuring Sector discussed the intent of G‑T.1. (e), which states that
acceptance tolerances apply to all equipment undergoing type evaluation
as it relates to special test tolerances.

The Sector agreed that special test tolerances should not be applicable
during an NTEP evaluation and to forward a proposal to modify Handbook
44 paragraph G-T.1. (e) Acceptance Tolerances, as shown above, to the
NCWM and Southern Weights and Measures Association (SWMA) S&T Committees
for consideration.

At its October 2004 Meeting, the SWMA reviewed the recommendation and
agreed to forward it to the Committee with the recommendation that it be
a voting item on the Committee's 2005 Agenda.

###### 320 SCALES

####### 320-1 S.1.1. (c) Zero Indication; Requirements for Markings or Indications for Other than Digital Zero Indications

**Source:** Carryover Item 320-8. (This item originated from the NCWM
S&T Committee and first appeared on the Committee's 2004 agenda.)

**Recommendation:** Amend paragraph S.1.1. (c) as follows:

> S.1.1. Zero Indication.
>
> \(a\) On a scale equipped with indicating or recording elements,
> provision shall be made to either indicate or record a zero-balance
> condition.
>
> \(b\) On an automatic-indicating scale or balance indicator, provision
> shall be made to indicate or record an out‑of-balance condition on
> both sides of zero.
>
> \(c\) A zero-balance condition may be indicated by other than a
> continuous digital zero indication, provided that an effective
> automatic means is provided to inhibit a weighing operation or to
> return to a continuous digital indication when the scale is in an
> out‑of‑balance condition **[and is marked or includes supplemental
> indications or markings to indicate that the "other than digital zero
> indication" represents a no-load condition of the
> scale]{.underline}.**
>
> Added 1987 **(**Amended 1993 **[and 200X]{.underline})**
>
> (Amended 1987)

**Background/Discussion** The Committee proposes to modify paragraph
S.1.1.(c) to clarify the requirement's original intent for marking zero
indications on scales and point-of-sale systems, where a zero-balance
condition is represented by other than a digital zero indication. The
proposal is the Committee's response to the 2003 NTETC Weighing Sector's
request for clarification on whether scales that use scrolling messages,
dashes, etc. to indicate zero require additional markings or indications
(1) to inform customers that the scales are at a zero‑balance condition
and (2) to properly identify the feature as specified in General Code
paragraph G-S.6. Marking Operational Controls, Indications, and
Features.

The proposal is consistent with other Handbook 44 code requirements
adopted to ensure that customers have sufficient information to make an
informed decision during a direct sale weighing transaction. These codes
require marking and/or identification of values, graduations, units, and
indications in the displayed and recorded transaction information.
Handbook 44 includes requirements for clearly identifying operational
controls and features used in weighing applications. Additionally,
Handbook 44 requirements specify that the size, proximity, and position
of that information shall be such that it is easily read and is
appropriate for that application.

In 2003, the Weighing Sector reported there was ongoing disagreement
among NIST Weights and Measures Division (WMD), the NTEP Participating
Laboratories, and manufacturers with the interpretation of NIST Handbook
44 General Code paragraph G-S.6. Marking Operational Controls,
Indications, and Features, Scales Code paragraph S.1.1. Zero Indication,
and the interpretation of related discussions in the 78^th^ (1993) NCWM
Specifications and Tolerances (S&T) Final Report Item 320-1 S.1.1. Zero
Indication. This resulted in inconsistent type evaluations and weights
and measures code enforcement for scales and point‑of‑sale systems
interfaced with scales that use methods such as screen savers, power
savers, scrolling displays, and modes of operation to indicate that a
device is at a no-load condition. NIST and some of the NTEP
Participating Laboratories agreed that General Code paragraph G-S.6
requires weighing devices to be marked or an indication provided that
states that zero-balance is represented by other than a digital zero
indication. NIST and those same laboratories noted this interpretation
was supported by the 1993 S&T Final Report. Other Participating
Laboratories and some manufacturers stated that the markings were not
necessary because Handbook 44 paragraph S.1.1. (c) does not specifically
state that the additional markings are required and the actions of the
78^th^ NCWM to amend paragraph S.1.1.(c) provided sufficient customer
protection for devices that use this feature.

Weights and measures officials indicated there may be
"not-built-for-purpose" devices that do not comply with the proposed
interpretation. These "not-built-for-purpose" devices are interfaced
with approved devices; however, the system continues weighing when the
scale is off zero. Consequently, officials questioned whether the
proposed changes to paragraph S.1.1.(c) are intended to be
nonretroactive requirements.

In July 2004, the Committee agreed that its proposal to modify paragraph
S.1.1.(c) was consistent with the original intent of the requirement.
After hearing comments about how some systems are designed to operate,
the Committee took the position that additional language was needed to
clarify that no marking is required if operator intervention is
necessary to verify a zero condition before the start of a transaction.
The Committee made the proposal an information item to provide
sufficient time for input from the Weighing Sector, who did not have the
proposal available at its 2003 meeting and to receive any language that
addresses operator intervention.

The Committee believes the proposal provides a record of how to apply
the requirement. The Committee agreed that the original intent of the
requirement was that all primary indicators comply with paragraph
S.1.1., therefore, the proposal should be a retroactive requirement.

At its August 2004 meeting, the Weighing Sector agreed with the
Committee's interpretation, but did not find it necessary to modify
paragraph S.1.1.(c) because NCWM Publication 14 was amended in 2003 to
include checklist procedures to verify that digital electronic scales
equipped with other than a continuous digital zero indication comply.

Publication 14 test procedures specify methods for defining the zero
indication when the zero condition of the scale is represented by other
than a continuous digital zero indication. The Weighing Sector agreed
the proposal represents an S&T Committee agenda item and the type
evaluation aspects of this issue have been resolved.

The Northeastern Weights and Measures Association (NEWMA) indicates
there is little support for this proposal. Many at NEWMA believe that
the NTEP laboratories already have the necessary information to properly
perform evaluations.

The Scale Manufacturers Association agreed that the current evaluation
process that is based on paragraph S.1.1.(c) prevents facilitation of
fraud.

####### 320-2 S.1.8.4. Recorded Representations, Point-of-Sale Systems; Footnote 1

**Source:** National Type Evaluation Technical Committee (NTETC)
Weighing Sector

**Recommendation:** Amend S.1.8.4. Recorded Representations,
Point-of-Sale Systems; Footnote 1 as follows:

> **S.1.8.4. Recorded Representations, Point-of-Sale Systems. -** The
> sales information recorded by cash registers when interfaced with a
> weighing 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.
>
> ^1^Weight values shall be identified by kilogram, kg, grams, g,
> ounces, oz, pound, **[or]{.underline}** lb**~~, or the sign
> "#~~**.**~~"~~** For devices interfaced with scales indicating in
> metric units, the unit price may be expressed in price per 100 grams.
>
> (Amended 1995 **[and 200X]{.underline}**)

The Western Weights and Measures Association (WWMA) and Central Weights
and Measures Association (CWMA) recommend an alternate proposal to amend
paragraph S.1.8.4. Footnote 1 as follows:

> ^1^Weight values shall be identified by kilogram, kg, grams, g,
> ounces, oz, pound, **[or]{.underline}** lb**~~, or the sign
> "#~~**.**~~"~~** ***[The "#" is not acceptable.]{.underline}*** For
> devices interfaced with scales indicating in metric units, the unit
> price may be expressed in price per 100 grams.
>
> ***[\[Nonretroactive as of January 1, 200X\]]{.underline}***
>
> (Amended 1995 **[and 200X]{.underline}**)

**Discussion:** The Weighing Sector proposes removing the \# symbol from
paragraph S.1.8.4. footnote 1 because the symbol represents a multitude
of terms used in many unrelated disciplines and because of advances in
printer technology.

In 1976, the Committee reviewed numerous examples of transaction
information and provided clarification on how that information should be
formatted on recorded representations. The Committee indicated the \#
symbol was an acceptable representation for pound on point-of sale
system's receipts. The Committee noted that the \# symbol was acceptable
because it was recognized in a widely used reference Dictionary at that
time. The "#" only requires one column whereas the two characters in
"lb" need two columns although both the symbol and abbreviation are
considered acceptable representations for pound.

Currently, NCWM Publication 14 "NTEP Technical Policy, Checklists and
Test Procedures" Section 75 List of Acceptable Abbreviations/Symbols
recognizes the \# symbol as acceptable, but discourages using the \#
symbol for recorded representations for electronic cash registers (ECR)
and point-of-sale (POS) systems. One manufacturer reasoned that if the
symbol is suitable for recorded representations for ECRs, then there is
no justification for prohibiting use of the \# symbol for other recorded
representations or markings. The manufacturer concluded that the \#
symbol should be acceptable in all instances or not acceptable in any
weighing applications.

The WWMA, CWMA, and Southern Weights and Measures Association agreed the
\# symbol is no longer acceptable, but this should not be applied
retroactively.

The Northeastern Weights and Measures Association also supports removing
the \# symbol from paragraph S.1.8.4. footnote 1.

The Scale Manufacturers supports the WWMA and CWMA alternate proposal
stated above.

####### 320-3 S.1.8.5. Computing Scale Interfaced to a Cash Register

**Source:** Southern Weights and Measures Association (SWMA)

**Recommendation:** Add new paragraph S.1.8.5. to the Scales Code as
follows:

> **[S.1.8.5. Computing Scale Interfaced to a Cash Register. -- A
> computing scale may interface with a cash register
> provided:]{.underline}**
>
> **[(a)]{.underline} [the cash register only records (serves as
> printer) the information received from the scale,]{.underline}**
>
> **[(b)]{.underline} [the computing scale has tare
> capability,]{.underline}**
>
> **[(c)]{.underline} [the computing scale is not equipped with PLU
> capability,]{.underline}**
>
> **[(d)]{.underline} [The electronic cash register does not have any
> input to the computing scale in the process of determining the total
> price of a weighed item.]{.underline}**
>
> **[(Added 200X)]{.underline}**

**Discussion:** The proposal adds new device specific code requirements
to the Scales Code to address the proper interface of computing scales
with Electronic Cash Registers (ECR). The current Handbook 44 General
Code provisions that specify equipment and its associated devices shall
not facilitate fraud are not sufficient to clarify how a computing scale
interfaced with an ECR should operate. The proposal recommends adding
new language to the Scales Code to clarify how each component must
display transaction information, function in taking tare, and operate
with Price‑Look‑Up (PLU) capability.

Weights and measures field officials report that they find computing
scales interfaced with ECRs, where the ECR accepts weighing results from
the computing scale and uses the ECR\'s price look-up (PLU) feature to
retrieve tare and unit price information, and calculate the total price.
Officials report that a different unit price, tare, and total price may
already be manually entered and displayed on the computing scale. What
the customer views on the computing scale as the net weight, unit price,
and total price may not be what the customer is actually charged by the
ECR.

The proposed new code language is taken from existing type evaluation
criteria. The NTEP Participating Laboratories agreed the problems
observed occur only in devices not held to this criteria. In this
instance, the NTEP Certificate of Conformance (CC) did not list the
interface as an approved application.

The Western Weights and Measures Association withdrew this item from its
agenda because there was only minimal support for the proposal in the
Weighing Sector.

The SWMA believes that the proposal provides specific guidance for
weights and measures field officials that is clearer and easier to
enforce than the General Code requirements for facilitation of fraud and
agreed to forward the proposal to the NCWM S&T Committee for
consideration as a voting item.

The Scale Manufacturers Association opposes the proposal, but recommends
the following alternate language because the proposal was written
inadvertently imposes design restrictions on the device:

> **[S.1.8.5. Computing Scale Interfaced to a Cash Register. -- A
> computing scale may interface with a cash register provided all
> displayed and recorded indication agree:]{.underline}**

####### 320-4 S.2.1.3. Scales Equipped with an Automatic Zero-Setting Mechanism (Zero Tracking), S.2.1.3.1. For Scales Manufactured Before January 1, 200X; Maximum Load Rezeroed, S.2.1.3.2. For Scales Manufactured After January 1, 200X; Maximum Load Rezeroed, and S.2.1.3.3. Automatic Zero-Setting Mechanism (Zero Tracking) on Class III L Devices

**Source:** National Type Evaluation Technical Committee (NTETC)
Weighing Sector

**Recommendation:** Modify paragraphs S.2.1.3.and S.2.1.3.1. and add new
paragraphs S.2.1.3.2.and S.2.1.3.3.as follows:

> ***S.2.1.3. Scales Equipped with an Automatic Zero-Setting Mechanism
> [(Zero Tracking)]{.underline}. ~~- Under normal operating conditions
> ~~***
>
> ***[S.2.1.3.1. For Scales manufactured before January 1,
> 200X]{.underline}**, the maximum load that can be "rezeroed" when
> either placed on or removed from the platform all at once **[under
> normal operating conditions]{.underline}**, shall be:*
>
> *(a) for bench, counter, and livestock scales: 0.6 scale division;*
>
> *(b) for vehicle, axle-load, and railway track scales: 3.0 scale
> divisions; and*
>
> *(c) for all other scales: 1.0 scale division.*
>
> *\[Nonretroactive and enforceable as of January 1, 1981\]*
>
> ***[S.2.1.3.2. For Scales manufactured after January 1, 200X, the
> maximum load that can be "rezeroed" when either placed on or removed
> from the platform all at once under normal operating conditions, shall
> be:]{.underline}***
>
> ***[(a) for vehicle, axle-load, and railway track scales: 3.0 scale
> divisions; and]{.underline}***
>
> ***[(b) for all other scales: 0.5 scale division.]{.underline}***
>
> **[(Added 200X)]{.underline}**
>
> *S.2.1.3.**~~1~~[3]{.underline}**. Automatic Zero-Setting Mechanism
> **[(Zero Tracking)]{.underline}** on Class III L Devices - Class III L
> devices equipped with automatic zero setting mechanisms shall be
> designed with a sealable means to allow the automatic zero setting to
> be disabled during the inspection and test of the device.*
>
> *\[Nonretroactive as of January 1, 2001\]*
>
> (Added 1999) **[(Amended 200X)]{.underline}**

**Discussion**: This proposal revisits the 2003 Weighing Sector's
concerns about holding the same device to different AZSM requirements
solely based on whether the device is located on a counter or on the
floor. The confusion over how to apply AZSM requirements is compounded
when a family of scales covered on an NTEP Certificate of Conformance
includes both bench/counter scales and other platform type scales.
Currently, paragraph S.2.1.3. specifies a different maximum load that
can be rezeroed under normal operating conditions for bench/counter
scales (0.6 scale division) and all other scales (1.0 scale division)

The proposal is also intended to partially align the automatic zero
tracking requirements in paragraph S.2.1.3 with those of Measurement
Canada and OIML R 76 "Non-automatic Weighing Instruments." AZSM
requirements for Class III L scales remain unchanged.

The Weighing Sector asks that the proposal become a developing item on
the NCWM S&T Agenda while the regional weights and measures associations
consider its effect on field evaluations. The Weighing Sector's public
members question how the field official will determine the date of
manufacture and whether training is needed. The Weighing Sector's
industry members requested a delayed enforcement date to allow
sufficient time for changes to devices nearing the end of their
production cycle.

The Western Weights and Measures Association (WWMA) believes there is
sufficient time between now and July 2005 to gather data to determine if
there will be enforcement issues. The WWMA agreed that while input from
field officials is necessary the proposal can move forward as a voting
item.

The Central Weights and Measures Association hearing no comments on the
proposal recommends it move forward and become a voting item.

The Southern Weights and Measures Association agreed with the concern
stated by public members of the Weighing Sector that it is difficult for
field officials to determine when a device was manufactured and
recommends that the proposal be an information item.

NIST Weights and Measures Division believes that field officials will
have no difficulty with enforcing the proposal based on equipment
manufacture date since they already successfully establish that criteria
when enforcing other nonretroactive requirements.

The Scale Manufacturers Association (SMA) believes the proposal has no
technical merit and is only an attempt to harmonize United States and
OIML requirements. The SMA supports harmonization of the United States
and international requirements, but is concerned about the potential for
unnecessarily increasing evaluation costs. The SMA does support this
effort toward harmonization provided NTEP waives the resulting
additional evaluation of existing devices.

####### 320-5 Table S.6.3.b. Notes For Table S.6.3.a.Note 3; Nominal Capacity and Value of the Scale Division and Appendix D; Definition of Reading Face

**Source:** National Type Evaluation Technical Committee (NTETC)
Weighing Sector

**Recommendation:** Amend Table S.6.3.b. Notes For Table S.6.3.a. Note 3
and revise the definition for "reading face" as follows:

> *3. The nominal capacity and value of the scale division shall be
> shown together (e.g., **~~50 000 x 5 kg, 100 000 x 10 lb~~**, 15 x
> 0.005 kg , or 30 x 0.01 lb) **~~adjacent to the weight display~~ [in a
> clear and conspicuous manner and be readily apparent when viewing the
> reading face of the scale indicator unless]{.underline} ~~when the
> nominal capacity and value of the scale division are not immediately~~
> [already]{.underline}** apparent **[by the design of the
> device]{.underline}**. Each scale division value or weight unit shall
> be marked on multiple range or multi-interval scales.*
>
> *\[Nonretroactive as of January 1, 1983\]*

**[(Amended 200X)]{.underline}**

> **reading face.** That portion of an automatic-indicating weighing or
> measuring device that gives a visible indication of the quantity
> weighed or measured. A reading face may include an indicator and a
> series of graduations or may present values digitally, and may also
> provide money-value indications. \[1.10**[, 2.20\]]{.underline}**
>
> **[(Added 200X)]{.underline}**

The NIST Weights and Measures Division (WMD) recommends an alternate
proposal to amend Table S.6.3.b. Note 3 as follows:

> *3. The nominal capacity and value of the scale division shall be
> shown together (e.g., **~~50 000 x 5 kg, 100 000 x 10 lb,~~** 15 x
> 0.005 kg , or 30 x 0.01 lb) **[near]{.underline}** **~~adjacent to~~**
> the weight display when the nominal capacity and value of the scale
> division are not immediately apparent. Each scale division value or
> weight unit shall be marked on multiple range or multi-interval
> scales.*
>
> *\[Nonretroactive as of January 1, 1983\]*

**[(Amended 200X)]{.underline}**

**Discussion:** The proposal is intended to provide guidelines on the
placement of the required nominal capacity and scale division
information on equipment. Currently, Table S.6.3.b. Note 3 specifies the
information shall be shown together adjacent to the weight display. In
1990, the Committee was unable to arrive at definitive guidelines on
what is meant by "adjacent" and left the interpretation to NTEP
Participating Laboratories and any manufacturer's challenges to the
laboratory's interpretation were to be heard by the NTEP Board of
Governors (now NCWM NTEP Committee).

NCWM Publication 14, "NTEP Technical Policy, Checklists, and Test
Procedures" for Digital Electronic Scales Section 2.13 states:

> 2.13. The nominal capacity by minimum scale division shall be clearly
> and conspicuously marked adjacent to the weight display. (Acceptable
> location depends on conspicuousness).

Past attempts to interpret this requirement continue to cause conflict
between NTEP Laboratories and manufacturers. Paragraph 2.13 implies that
"conspicuousness" should be the primary concern, rather than "adjacent."
The NTEP Laboratories agree that until "adjacent" is removed from the
requirement, the labs are tied to that interpretation.

The NTEP Laboratories maintain that the information shall be marked next
to the weight display on the face of a scale, but continue to receive
devices with the required markings located elsewhere on the face of the
scale as shown below in Example 2.

![](media/image1.png){width="3.5in" height="1.5722222222222222in"}

Example 1 Example 2

The NTEP Laboratories agree that Example 2 is incorrect according to
Handbook 44 because the markings do not appear adjacent to the weight
display. Additionally, the markings are not placed as close as practical
to the weight indication as required in General Code paragraph
G-S.5.2.4. Values. The NTEP Laboratories acknowledge that the operator
is already familiar with the device and the customer does not fully
understand the significance of this information. The markings in both
examples are conspicuous enough for the inspector and service technician
who rely most heavily on the information. Both examples would be
acceptable if Note 3 could be amended to allow for placing the markings
conspicuously on the face of the indicating portion of the scale.

The Weighing Sector considered the NTEP Participating Laboratories
recommendation for adding a new definition to Handbook 44, Appendix D -
Definitions to accompany the existing definitions for "face" on
taximeters and dispensers. However, the Weighing Sector believes it
would be more appropriate to modify the existing definition of "reading
face" to reference the Scales Code 2.20 and to change "face" to "reading
face" in Table S.6.3.b., Note 3 and forwarded a recommendation
accordingly. The Weighing Sector believes that the proposal shown in the
recommendation above amends Handbook 44 to permit acceptance of both
Examples 1 and 2.

The Central Weights and Measures Association agreed with the Weighing
Sector proposal shown in the recommendation above.

The Western Weights and Measures Association (WWMA) discussed how
paragraph S.5.2.4. requirements for values are not intended to apply to
the nominal capacity statement and does little to help the customer
determine the acceptability of a weight value. The WWMA agreed to the
same wording shown in the Weighing Sector's proposal and recommends that
the proposal move forward as a voting item.

The Northeastern Weights and Measures Association concluded that this is
an NTEP issue and "adjacent" is the correct terminology since it
represents "abutting" or "next to."

The Southern Weights and Measures Association (SWMA) agreed with the
Weighing Sector's proposal provided the unit of weight is identified in
a manner that is consistent with requirements in paragraph G-S.5.2.4.
Values for placing as close as practicable adequate and sufficient
information to define graduations, indications, or recorded
representations. The SWMA agreed that Example 1 is an example of
"adjacent to," but also provided Example 3 shown below, which is a
demonstration of markings that are not "adjacent to" the weight display.
The SWMA noted that Example 3 also provides an example of how the unit
of weight shall be displayed in the weight display when the nominal
capacity and value of the scale division are not adjacent to the weight
display. The SWMA agreed that Example 1 and Example 3 are both correct.

![](media/image1.png){width="3.125in" height="1.5in"}

Example 3

The NIST Technical Advisor to the Weighing Sector requested the Weighing
Sector consider an alternate proposal shown in the "Recommendation"
section above. This alternate proposal would amend Note 3 in Table
S.6.3.b to eliminate the need for a definition of reading face. It would
also closer align U.S. terminology with that used in OIML R 76
"Non-automatic Weighing Instruments" paragraph 7.1.4 Presentation of
descriptive markings, which states the following:

> 7.1.4 Presentation of descriptive markings
>
> The descriptive markings shall be indelible and of a size, shape and
> clarity allowing easy reading. They shall be grouped together in a
> clearly visible place either on a descriptive plate fixed to an
> instrument or, on a part of the instrument itself.
>
> The markings:
>
> Max ...
>
> Min ...
>
> e ...
>
> and d if d =/ e
>
> shall also be shown near the display of the result if they are not
> already located there (*Technical Advisor Note:* The markings may need
> to be repeated near the result if they are on a plate or location that
> is not near the weight display, or if the markings are on separable
> elements). It shall be possible to seal the plate bearing the
> descriptive markings unless its removal will result in its
> destruction. If the data plate is sealed, it shall be possible to
> apply a control mark to it.

The NIST Weights and Measures Division commented that it is concerned
that the proposal deviates from the intent of General Code paragraph
G‑S.5.2.4 Values that specifies that values shall be adequately defined
and placed with reference to the indications as close as practicable.
Currently as written Note 3 is not in conflict with the General Code
paragraph G-S.5.2.4. Values. However, the proposal submitted by the NTEP
laboratories does create a conflict since the markings may not be placed
as close as practical to the weight display.

The Scale Manufacturers Association supports the Weighing Sector's
proposal, but asks for further clarification on the meaning of the
phrase "already apparent by the design."

####### 320-6 N.1.3.1. Bench or Counter Scales, N.1.3.8. All Other Scales Except Crane Scales, Hanging Scales, Hopper Scales, Wheel--Load Weighers, and Portable Axle-Load Weighers, and Appendix D; Definitions of Bench Scale and Counter Scale 

**Source:** National Type Evaluation Technical Committee (NTETC)
Weighing Sector

**Recommendation:** Delete paragraph N.1.3.1. and renumber subsequent
paragraphs as follows:

> **N.1.3. Shift Test.**
>
> **~~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.~~**
>
> **N.1.3.~~2~~[1]{.underline}. Dairy-Product-Test Scale.**
>
> **.**
>
> **.**
>
> **.**
>
> **N.1.3.~~7~~[6]{.underline}. Vehicle On-Board Weighing Systems.**

Renumber and amend paragraph N.1.3.8. All Other Scales Except Crane
Scales, Hanging Scales, Hopper Scales, Wheel--Load Weighers, and
Portable Axle-Load Weighers as follows:

> **N.1.3.~~8~~[7]{.underline}. All Other Scales Except Crane Scales,
> Hanging Scales, Hopper Scales, Wheel-Load Weighers, and Portable
> Axle-Load Weighers.** A shift test shall be conducted using the
> following prescribed test loads and test patterns.
>
> **[(a)]{.underline}** For **~~livestock~~** scales**~~, the~~ [with a
> nominal capacity greater than 150 kg (300 lb), a]{.underline}** shift
> test load **~~shall not exceed one-half the rated section~~ [may be
> conducted by either using one-third nominal]{.underline}** capacity
> **~~or one-half the rated concentrated load~~ [test load centered as
> nearly as possible at the center of each quarter of the load-receiving
> element as shown in Figure 1 below, or by using one-quarter
> nominal]{.underline}** capacity**~~, whichever is applicable. A
> shift~~ test ~~shall be conducted using either:~~ [load centered as
> nearly as possible, successively over each corner of the
> load-receiving element as shown in Figure 2 below.]{.underline}**
>
> **(~~a~~[b]{.underline}) ~~A one-quarter~~ [For scales with
> a]{.underline}** nominal capacity **[of 150 kg (300 lb) or less, a
> shift]{.underline}** test load **[shall be conducted using one-third
> nominal capacity test. The]{.underline} ~~centered as nearly as
> possible, successively over each main~~** load **[shall be applied
> centrally in the segment if a single weight is used, or applied
> uniformly over the segment, if several weights are
> used.]{.underline}~~support as shown in the diagram below; or~~**
>
> **(~~b~~[c]{.underline}) ~~A one-half nominal capacity~~ [For
> livestock scales the shift]{.underline}** test load **~~centered as
> nearly as possible, successively at the center of each quarter of the
> load-receiving element~~ [shall not exceed one-half the rated section
> or concentrated load capacity using the prescribed test
> pattern]{.underline}** as shown in **~~the diagram~~** **[Figure 1, or
> one-quarter the section or concentrated load capacity as shown in
> Figure 2]{.underline}** below.

(Added 2003)

> (Amended 1987**[,]{.underline} ~~and~~** 2003**[, and
> 200X)]{.underline}**

Delete Appendix D definitions for "bench scale" and "counter scale" as
follows:

**~~bench scale. See \"counter scale.\"\[2.20\]~~**

> **~~counter scale. One that, by reason of its size, arrangement of
> parts, and moderate nominal capacity, is adapted for use on a counter
> or bench. Sometimes called \"bench scale.\"\[2.20\]~~**

The Central Weights and Measures Association (CWMA) recommends an
alternate proposal to modify paragraph N.1.3.8. as follows:

> **N.1.3.~~8~~[7]{.underline}. All Other Scales Except Crane Scales,
> Hanging Scales, Hopper Scales, Wheel-Load Weighers, and Portable
> Axle-Load Weighers.** A shift test shall be conducted using the
> following prescribed test loads and test patterns.
>
> **[(a)]{.underline}** For **~~livestock~~** scales**~~, the~~ [with a
> nominal capacity greater than 150 kg (300 lb) a]{.underline}** shift
> test load **~~shall not exceed one-half the rated section~~ [may be
> conducted by either using one-third nominal]{.underline}** capacity
> **~~or one-half the rated concentrated load~~ [test load centered as
> nearly as possible at the center of each quarter of the load-receiving
> element as shown in Figure 1 below, or by using one-quarter
> nominal]{.underline}** capacity**~~, whichever is applicable. A
> shift~~ test ~~shall be conducted using either:~~ [load centered as
> nearly as possible, successively over each corner of the
> load-receiving element as shown in Figure 2 below.]{.underline}**
>
> **(~~a~~[b]{.underline}) ~~A one-quarter~~ [For scales with
> a]{.underline}** nominal capacity **[of 150 kg (300 lb) or less, a
> shift]{.underline}** test load **[shall be conducted using one- third
> nominal capacity test. The]{.underline} ~~centered as nearly as
> possible, successively over each main~~** load **[shall be applied
> centrally in the segment if a single weight is used, or applied
> uniformly over the segment, if several small weights are
> used]{.underline} ~~support~~ as shown in ~~the diagram~~ Figure 1
> below~~; or~~[.]{.underline}**
>
> **(~~b~~[c]{.underline}) ~~A one-half nominal capacity~~ [For
> livestock scales the shift]{.underline}** test load **~~centered as
> nearly as possible, successively at the center of each quarter of the
> load-receiving element~~ [shall not exceed one-half the rated section
> or concentrated load capacity using the prescribed test
> pattern]{.underline}** as shown in **~~the diagram~~** **[Figure 1, or
> one-quarter the section or concentrated load capacity as shown in
> Figure 2]{.underline}** below.

(Added 2003)

> (Amended 1987**[,]{.underline} ~~and~~** 2003**[, and
> 200X)]{.underline}**

**Discussion:** The Weighing Sector requests the Committee revisit a
2003 Weighing Sector proposal that is newly revised to clarify the
appropriate shift test pattern and test loads for bench/counter scales
and other platform type scales. Currently, 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. Other platform scale
shift tests are conducted with a one-half capacity test load centered,
as nearly as possible, successively at the center of each quadrant.

The item was withdrawn from the 2004 S&T Agenda because the Committee
agreed the proposal required more work to refine the definitions of
bench/counter device types and develop an appropriate shift test
procedure that is aligned with OIML requirements. Guidelines on how to
clearly distinguish the different device types would allow the weights
and measures field official to proceed with the appropriate shift test
without having to conduct further investigation into the device type.

The NTEP Participating Laboratories were requested to conduct a series
of tests on scales currently under NTEP evaluation comparing shift test
results between existing Handbook 44 shift test procedures and those
procedures outlined in the proposal. It should be noted that the
proposal does not permit corner testing for scales with a nominal
capacity less than or equal to 150 kg. Corner testing is allowed within
permissible load limits, if there are not enough test weights to perform
the shift test, or if the scale has four load supports. Table 4 Minimum
Test Weights requires that scales with a capacity of 150 kg or less have
test weights up to 100 percent of the scale capacity.

The Western Weights and Measures Association (WWMA) heard comments from
the Weighing Sector recommending that the proposal be an information or
developing item until additional field test data is gathered to verify
that the proposed test loads and positions are equivalent to existing
test loads. NIST commented that there might be sufficient time prior to
the NCWM Interim and Annual meetings to gather the data.

The WWMA recommends that shift test data comparing existing and the
proposed test loads and positions be sent to Steve Cook, NIST Technical
Advisor to the NTETC Weighing Sector at <steven.cook@nist.gov>, by fax
at 301-926-0647 or mailed to NIST WMD, 100 Bureau Drive MS 2600,
Gaithersburg, MD 20899-2600.

The CWMA recommends an alternate proposal as an information item to
allow time for collecting data using the existing and proposed test load
and test patterns.

The Northeastern Weights and Measures Association (NEWMA) recommend that
NTEP Participating Laboratories gather data, performing tests both ways.
On a general note regarding harmonization with OIML, NEWMA believes that
there may be instances where OIML should harmonize with the U.S.
Proposals to change U.S. requirements should not be made solely on the
justification that a difference in a U.S. standard results in a
"technical barrier" to trade.

The Southern Weights and Measures Association agrees that the proposal
should remain an information item on the NCWM S&T Agenda until data is
provided to demonstrate the impact on existing devices.

The Scale Manufacturers Association (SMA) supports the Weighing Sector's
proposal, but questions whether Figure 2 is in error or is inconsistent
with the proposed requirement that describes the location of the test
load. Consequently, the SMA recommends an alternate Figure 2, where the
test loads are positioned on the outside corners of the platform and the
load bearing points are removed from the diagram because they are not
relevant, as follows:

**[Figure 2]{.underline}**

The SMA also notes that there is also inconsistency in the terminology
in the proposal. Proposed paragraph N.1.3.7.(a) includes the term
"quarter," whereas proposed paragraph N.1.3.7.(b) specifies the term
"segment." The SMA recommends replacing both terms with the word
"quadrant."

The SMA agreed that the Weighing Sector's proposal provides a shift test
that is independent of the device's design. The proposal is an
improvement over the corresponding R 76 requirement, which is design
dependent. In keeping with the spirit of harmonization, the SMA
recommends that NIST Weights and Measures Division submit a similar
proposal to OIML.

####### 320-7 Table 6 Maintenance Tolerances 

**Source:** NIST Weights and Measures Division (WMD)

**Recommendation:** Amend Table 6 Maintenance Tolerances as follows:

+-------+-----------+-------+-------+---------+---------+------------+
| **    |           |       |       |         |         |            |
| Table |           |       |       |         |         |            |
| 6.**  |           |       |       |         |         |            |
|       |           |       |       |         |         |            |
| **M   |           |       |       |         |         |            |
| ainte |           |       |       |         |         |            |
| nance |           |       |       |         |         |            |
| To    |           |       |       |         |         |            |
| leran |           |       |       |         |         |            |
| ces** |           |       |       |         |         |            |
|       |           |       |       |         |         |            |
| *     |           |       |       |         |         |            |
| *(All |           |       |       |         |         |            |
| v     |           |       |       |         |         |            |
| alues |           |       |       |         |         |            |
| in    |           |       |       |         |         |            |
| this  |           |       |       |         |         |            |
| table |           |       |       |         |         |            |
| are   |           |       |       |         |         |            |
| in    |           |       |       |         |         |            |
| [     |           |       |       |         |         |            |
| verif |           |       |       |         |         |            |
| icati |           |       |       |         |         |            |
| on]{. |           |       |       |         |         |            |
| under |           |       |       |         |         |            |
| line} |           |       |       |         |         |            |
| scale |           |       |       |         |         |            |
| divi  |           |       |       |         |         |            |
| sions |           |       |       |         |         |            |
| [e]   |           |       |       |         |         |            |
| {.und |           |       |       |         |         |            |
| erlin |           |       |       |         |         |            |
| e})** |           |       |       |         |         |            |
+-------+-----------+-------+-------+---------+---------+------------+
| *     |           |       |       |         |         |            |
| *Tole |           |       |       |         |         |            |
| rance |           |       |       |         |         |            |
| in    |           |       |       |         |         |            |
| [     |           |       |       |         |         |            |
| verif |           |       |       |         |         |            |
| icati |           |       |       |         |         |            |
| on]{. |           |       |       |         |         |            |
| under |           |       |       |         |         |            |
| line} |           |       |       |         |         |            |
| scale |           |       |       |         |         |            |
| divi  |           |       |       |         |         |            |
| sions |           |       |       |         |         |            |
| [e    |           |       |       |         |         |            |
| ]{.un |           |       |       |         |         |            |
| derli |           |       |       |         |         |            |
| ne}** |           |       |       |         |         |            |
+-------+-----------+-------+-------+---------+---------+------------+
|       | **1**     | **2** |       | **3**   |         | **5**      |
+-------+-----------+-------+-------+---------+---------+------------+
| **Cl  | ##        |       |       |         |         |            |
| ass** | Test Load |       |       |         |         |            |
+-------+-----------+-------+-------+---------+---------+------------+
| I     | 0 ‑ 50    | 50    | 200   | 20­0 001 |         |            |
|       | 000       | 001 ‑ | 000   | +       |         |            |
+-------+-----------+-------+-------+---------+---------+------------+
| II    | 0 ‑  5    | 5 001 | 20    | 20 001  |         |            |
|       | 000       | ‑     | 000   | +       |         |            |
+-------+-----------+-------+-------+---------+---------+------------+
| III   | 0 -       | 501 ‑ | 2 000 | 2 001+  | **~~4   | **~~4 001  |
|       | 500       |       |       | ~~‑~~   | 000~~** | +~~**      |
+-------+-----------+-------+-------+---------+---------+------------+
| IIII  | 0 -       | 51 ‑  | 200   | 201+    | **~~    | **~~401    |
|       | 50        |       |       | ~~‑~~   | 400~~** | +~~**      |
+-------+-----------+-------+-------+---------+---------+------------+
| III L | 0 ‑       | 501 ‑ | 1 000­ | (Add 1d |         |            |
|       |  500      |       |       | for     |         |            |
|       |           |       |       | each    |         |            |
|       |           |       |       | add     |         |            |
|       |           |       |       | itional |         |            |
|       |           |       |       | 500 d   |         |            |
|       |           |       |       | or      |         |            |
|       |           |       |       | f       |         |            |
|       |           |       |       | rac­tion |         |            |
|       |           |       |       | t       |         |            |
|       |           |       |       | here­of) |         |            |
+-------+-----------+-------+-------+---------+---------+------------+

**[(Amended 200X)]{.underline}**

**Discussion:** During the August 2003 meeting of the U.S. National
Working Group (USNWG) for R 76 "Non-automatic Weighing Instruments," the
group discussed the differences in the tolerance for Class III and IIII
weighing instruments. The USNWG reconfirmed that the original intent of
the step tolerances was to provide a relationship between scale accuracy
and scale resolution. The USNWG agreed that Handbook 44 Class III and
Class IIII tolerance should be aligned with OIML R-76. The manufacturers
present reported that they build identically performing instruments and
load cells for both U.S. and international markets.

In September 2004, Hobart Corporation provided additional "production
data" comparing the different Class III tolerances as follows:

![](media/image3.png){width="5.46875in" height="2.0729166666666665in"}

![](media/image4.png){width="5.331944444444445in"
height="2.6881944444444446in"}

The chart data indicates that the production scales would comply with
Handbook 44 Table 6 tolerances up to 10 000 e and OIML R 76 tolerances
up to approximately 7000 e. Hobart Corporation also reports that many
scales and load cells with an n~max~ greater than 5000 e would have
difficulty in complying with the temperature effect on zero in both
Handbook 44 and OIML R 76 standards.

The NIST Technical Advisor to the Weighing Sector requested the Weighing
Sector discuss whether there is any technical justification to retain
the Handbook 44 Accuracy Class III L tolerance or for proposing this
tolerance be incorporated into OIML R 76. The Class III L tolerance
structure in Handbook 44 deviates from the intent of step tolerances
since that there is little relation of the value of the scale division
(i.e., e = 20 lb resolution) to the accuracy required (i.e. ± 8 e at 80
000 lb maintenance tolerance). It should be noted that the tolerance
values, zero-tracking limit, and motion detection requirements in
Handbook 44 are roughly equivalent to a R 76 instrument when e = 50 lb.

The NTETC Weighing Sector withdrew this proposal from its agenda since
the proposal was not developed in response to problems encountered with
Publication 14 test procedures. The Weighing Sector recommends the NIST
and USNWG proposal become either an information item or developing item
that is reviewed by the regional weights and measures associations as
well as the NCWM S&T Committee.

The Western Weights and Measures Association (WWMA) heard comments from
members of the Weighing Sector that additional test data is needed to
verify the effect of the proposed tolerances on Class III and IIII
scales. The WWMA notes that data is required to determine the effect of
the proposed tolerances on the apportionment errors for single and
multiple load cell applications. The WWMA recommends that consideration
be given to the international recommendations for the apportionment of
error. The WWMA, like the Weighing Sector, agreed that the proposal
should become an information item so that further analysis can be made
on its possible impact to load cells, separable weighing elements, and
existing scales.

The Central Weights and Measures Association (CWMA) recommends the
proposal become an information item so further analysis can be made on
its possible impact to load cells, separable weighing elements and
existing scales. The CWMA notes that the Class III L scale tolerances
for test loads greater than the proposed 1000 verification scale
divisions (e) are in units of scale divisions (d) (i.e., Add 1d for each
additional 500 d or fraction thereof). The CWMA questions whether these
tolerances should be in e; however, this additional modification may add
to the confusion.

The Southern Weights and Measures Association considered the proposal,
but withdrew this item from its agenda.

The Scale Manufacturers Association (SMA) opposes the proposal. The SMA
believes a change of this magnitude to harmonize requirements is
premature and should not take precedence over other harmonization
issues.

####### 320-8 T.N.4.5. Time Dependence, T.N.4.5.1. Non-automatic Instruments Class II, III, and IIII Indications, T.N.4.5.2. Weighing Instrument Class III Indications, T.N.4.6. Time Dependence (Creep) for Load Cells During Type Evaluation, T.N.4.6.1. Reading Error, and T.N.4.6.2. MPE Using Apportionment Factors

**Source:** Western Weights and Measures Association (WWMA)

**Recommendation:** Amend paragraph T.N.4.5. as follows:

> **T.N.4.5. Time Dependence. ~~- At constant test conditions, the
> indication 20 seconds after the application of a load and the
> indication after 1 hour shall not differ by more than:~~**
>
> **~~(a)~~ ~~one-half of the absolute value of the applicable tolerance
> for the applied load for class III L devices; and~~**
>
> **~~(b)~~ ~~the absolute value of the applicable tolerance for the
> applied load for all other devices.~~**
>
> **(Amended 1989 [and 200X]{.underline})**

Add new paragraphs T.N.4.5.1. and T.N.4.5.2. as follows:

> **[T.N.4.5.1. A non-automatic weighing instrument of class II, III,
> and IIII shall meet the following requirements at constant test
> conditions:]{.underline}**
>
> **[(a)]{.underline}** **[When any load is kept on an instrument, the
> difference between the indication obtained immediately after placing a
> load and the indication observed during the following 30 minutes shall
> not exceed 0.5 e.]{.underline}**
>
> **[(b)]{.underline}** **[However, the difference between the
> indication obtained at 15 minutes and that at 30 minutes shall not
> exceed 0.2 e. If these conditions are not met, the difference between
> the indication obtained immediately after placing a load on the
> instrument and the indication observed during the following four hours
> shall not exceed the absolute value of the maximum permissible error
> at the load applied.]{.underline}**
>
> **[(c)]{.underline}** **[The deviation on returning to zero as soon as
> the indication has stabilized, after the removal of any load which has
> remained on the instrument for one half hour, shall not exceed 0.5
> e.]{.underline}**
>
> **[For a multi-interval instrument, the deviation shall not exceed 0.5
> e~1~ (first weighing segment).]{.underline}**
>
> **[On a multiple range instrument, the deviation on returning to zero
> from Maxi (load in the applicable weighing range) shall not exceed 0.5
> e~i~ (interval of the weighing segment). Furthermore, after returning
> to zero from any load greater than Max1 (capacity of the first
> weighing range) and immediately after switching to the lowest weighing
> range, the indication near zero shall not vary by more than e1
> (interval of the first weighing range) during the following 5
> minutes.]{.underline}**
>
> **[(Added 200X)]{.underline}**
>
> **[T.N.4.5.2. A weighing instrument of class III L shall meet the
> following requirements:]{.underline}**
>
> **[(a)]{.underline}** **[When any load is kept on an instrument, the
> difference between the indication obtained immediately after placing a
> load and the indication observed during the following 30 minutes shall
> not exceed 1.5 e.]{.underline}**
>
> **[(b)]{.underline}** **[However, the difference between the
> indication obtained at 15 minutes and that at 30 minutes shall not
> exceed 0.6 e. If these conditions are not met, the difference between
> the indication obtained immediately after placing a load on the
> instrument and the indication observed during the following four hours
> shall not exceed the absolute value of the maximum permissible error
> at the load applied.]{.underline}**
>
> **[The deviation on returning to zero as soon as the indication has
> stabilized, after the removal of any load which has remained on the
> instrument for one half hour, one-half of the absolute value of the
> applicable tolerance for the applied load for class III L
> devices.]{.underline}**
>
> **[(Added 200X)]{.underline}**

Add new paragraphs T.N.4.6., T.N.4.6.1., T.N.4.6.2., T.N.4.6.3 and Table
T.N.4.6.2 to include tolerances for load performance and zero
repeatability that are aligned with OIML R 60.

> **[T.N.4.6. Time Dependence (Creep) for Load Cells During Type
> Evaluation. -- A load cell (force transducer) marked with an accuracy
> Class, shall meet the following requirements at constant test
> conditions:]{.underline}**
>
> **[T.N.4.6.1. - With a constant maximum load for the measuring range,
> Dmax, between 90 % and 100 % of maximum capacity, Emax, applied to the
> load cell, the difference between the initial reading and any reading
> obtained during the next 30 minutes shall not exceed the absolute
> value of the maximum permissible error (mpe) for the applied load (see
> N.4.6.2.). The difference between the reading obtained at 20 minutes
> and the reading obtained at 30 minutes shall not exceed 0.15 times the
> absolute value of the mpe (see N.4.6.2.).]{.underline}**
>
> **[T.N.4.6.2. - The mpe for creep shall be determined from Table 5
> using the following apportionment factors (pLC):]{.underline}**
>
> **[pLC = 0.7 for load cells marked with S (single load cell
> applications), and]{.underline}**
>
> **[pLC = 1.0 for load cells marked with M (multiple load cell
> applications)]{.underline}**
>
> **[(Added 200X)]{.underline}**

+-------+---------------+---------------+-------------+--------------+
| **[   |               |               |             |              |
| Table |               |               |             |              |
| T.N.4 |               |               |             |              |
| .6.2. |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
|       |               |               |             |              |
| **[Ma |               |               |             |              |
| ximum |               |               |             |              |
| P     |               |               |             |              |
| ermis |               |               |             |              |
| sible |               |               |             |              |
| E     |               |               |             |              |
| rrors |               |               |             |              |
| (mpe) |               |               |             |              |
| On    |               |               |             |              |
| Type  |               |               |             |              |
| Evalu |               |               |             |              |
| ation |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
| **    | **[Load       |               |             |              |
| [Tole | (m)]{         |               |             |              |
| rance | .underline}** |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
|       |               |               |             |              |
| **[   |               |               |             |              |
| (mpe) |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
|       | **[Class      | **[Class      | **[Class    | **[Class     |
|       | I]{           | II]{          | III]{.u     | IIII]{.      |
|       | .underline}** | .underline}** | nderline}** | underline}** |
+-------+---------------+---------------+-------------+--------------+
| *     | **[0  50     | **[0  m     | **[0  m   | **[0  m    |
| *[pLC | 000v]{        | 5000v]{       | 500v]{.u    | 50v]{.       |
| x     | .underline}** | .underline}** | nderline}** | underline}** |
| 0.5v  |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
| *     | **[50 001v   | **[5001v  m  | **[501v  m | **[51v  m  |
| *[pLC | m  200       |  20          |            | 200v]{.      |
| x     | 000v]{        | 000v]{        | 2000v]{.u   | underline}** |
| 1.0v  | .underline}** | .underline}** | nderline}** |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
| *     | **[200 001v  | **[20 001v   | **[2001v   | **[201v  m  |
| *[pLC | m]{           | m            | m          |             |
| x     | .underline}** | 100 000v]{    | 10 000v]{.u | 1000v]{.     |
| 1.5v  |               | .underline}** | nderline}** | underline}** |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
|       | **[Load m,    |               |             |              |
|       | Class III     |               |             |              |
|       | L]{           |               |             |              |
|       | .underline}** |               |             |              |
+-------+---------------+---------------+-------------+--------------+
| *     | **[0  m     |               |             |              |
| *[pLC | 500v]{        |               |             |              |
| x     | .underline}** |               |             |              |
| 0.5v  |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
| *     | **[501v  m  |               |             |              |
| *[pLC | 1000v\*]{     |               |             |              |
| x     | .underline}** |               |             |              |
| 1.0v  |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
| **[   |               |               |             |              |
| \*Add |               |               |             |              |
| 0.7   |               |               |             |              |
| to    |               |               |             |              |
| the   |               |               |             |              |
| tole  |               |               |             |              |
| rance |               |               |             |              |
| for   |               |               |             |              |
| each  |               |               |             |              |
| 500v  |               |               |             |              |
| of    |               |               |             |              |
| load  |               |               |             |              |
| or    |               |               |             |              |
| fra   |               |               |             |              |
| ction |               |               |             |              |
| th    |               |               |             |              |
| ereof |               |               |             |              |
| up to |               |               |             |              |
| a     |               |               |             |              |
| ma    |               |               |             |              |
| ximum |               |               |             |              |
| load  |               |               |             |              |
| of 10 |               |               |             |              |
| 000v  |               |               |             |              |
| for   |               |               |             |              |
| load  |               |               |             |              |
| cells |               |               |             |              |
| m     |               |               |             |              |
| arked |               |               |             |              |
| with  |               |               |             |              |
| S.    |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
|       |               |               |             |              |
| **[   |               |               |             |              |
| \*Add |               |               |             |              |
| 1.0   |               |               |             |              |
| to    |               |               |             |              |
| the   |               |               |             |              |
| tole  |               |               |             |              |
| rance |               |               |             |              |
| for   |               |               |             |              |
| each  |               |               |             |              |
| 500v  |               |               |             |              |
| of    |               |               |             |              |
| load  |               |               |             |              |
| or    |               |               |             |              |
| fra   |               |               |             |              |
| ction |               |               |             |              |
| th    |               |               |             |              |
| ereof |               |               |             |              |
| up to |               |               |             |              |
| a     |               |               |             |              |
| ma    |               |               |             |              |
| ximum |               |               |             |              |
| load  |               |               |             |              |
| of 10 |               |               |             |              |
| 000v  |               |               |             |              |
| for   |               |               |             |              |
| load  |               |               |             |              |
| cells |               |               |             |              |
| m     |               |               |             |              |
| arked |               |               |             |              |
| with  |               |               |             |              |
| M.    |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+
| **[(  |               |               |             |              |
| Added |               |               |             |              |
| 200X) |               |               |             |              |
| ]{.un |               |               |             |              |
| derli |               |               |             |              |
| ne}** |               |               |             |              |
+-------+---------------+---------------+-------------+--------------+

Technical Advisor's Note: "pLC" represents the apportionment factors

"V" represents the load cell verification interval

**Background/Discussion:** The NIST Weights and Measures Division
acknowledges that this recommendation is a small step in the work to
align U.S. and international requirements. Another possible alternative
for aligning Handbook 44 and Publication 14 with OIML R 60 is to
consider incorporating OIML R 60 chapters 1 through 7 by reference into
Handbook 44 and OIML R 60 Annexes A through E into Publication 14.
Handbook 44 and Publication 14 could further include paragraphs that
state which requirements are not adopted, are different than, or are in
addition to OIML R 60.

The following background information on the development of Handbook 44
Scales Code T.N.4.5. Time Dependence is provided by Mr. John Elengo
(NIST Consultant) working on the comparison of Handbook 44, OIML R 76
"Non-automatic Weighing Instruments" and OIML R 60 "Load Cells".

Prior to the adoption of Handbook 44 paragraph T.N.4.5, the United
States had not established any requirements for "creep." At that time,
the OIML requirement for creep was based on a 4-hour period, which was
considered excessive since the error is primarily contributed by the
load cells used in a scale. Generally, the greatest amount of load cell
creep occurs during a short period (minutes) immediately following the
application of the load on the scale. After that point, the output
becomes increasingly constant. Hence, the United States adopted a
requirement which specifies a 1-hour period rather than a 4-hour period.
Years later, during the revision of OIML R 60, it became evident that
most international evaluation laboratories were not conducting the
4-hour test but a shorter one, and the creep proved to stabilize
sufficiently during this shorter test. The assumption was made that the
device would meet the 4-hour requirement. This assumption was verified
by sample tests. Based on this experience and that gained in the
international comparison of load cell evaluations, the OIML
International Working Group for R 60 concluded that a 30-minute test is
sufficient provided that, in addition to measuring the difference over a
30‑minute period, the difference occurring in the last 10 minutes of
this period be measured also. A more restrictive allowance than the
total allowance for the 30-minute period is applied to the 10-minute
period difference in order to assure that the creep is becoming
increasingly constant and not increasing. OIML R 76 adopted the R 60
30-minute requirement. The requirement now applies not only to the load
cell, but also to the instrument as a whole. If main components other
than the load cell are a source of creep, they can be accounted for
using the principle of apportionment of errors (including the assignment
of fractions "pi" to those various separate main components of an
instrument that can be evaluated separately). \[refer to R 76-1, 3.5.4\]

This proposal was discussed further at the 2004 NTEP Participating
Laboratories meeting. The NTEP Laboratories agreed to forward a proposal
to align Handbook 44 with R 76 and R 60.

The National Type Evaluation Technical Committee (NTETC) Weighing Sector
withdrew this proposal from its agenda since it was not developed in
response to problems with Publication 14 test procedures and due to time
constraints. A member of the Sector also noted the proposal does not
recognize tolerances for Class I scales.

The Western Weights and Measures Association recommends this item move
forward as a voting item, but did not indicate its rationale for taking
this position.

The Central Weights and Measures Association (CWMA) agreed the proposal
is an issue for the Weighing Sector requiring further development.
Consequently, CWMA recommends the proposal move forward as an
information item.

The Northeastern Weights and Measures Association (NEWMA) recommends for
consistency that the U.S. terms should be followed by the OIML
equivalent terminology in parentheses. NEWMA also finds that this is an
example of the need for revising Handbook 44 into separate sections for
field verification and type evaluation test procedures.

The Southern Weights and Measures Association recommends that the
proposal become a developing item on the NCWM S&T Agenda.

The Scale Manufacturers Association (SMA) recommends only an alternate
modification to current Scales Code paragraph T.N.4.5. as follows:

> **T.N.4.5. Time Dependence. ~~- At constant test conditions, the
> indication 20 seconds after the application of a load and the
> indication after 1 hour shall not differ by more than:~~ -- [A time
> dependence test shall be conducted during type
> evaluation.]{.underline}**
>
> **~~(a)~~ ~~one-half of the absolute value of the applicable tolerance
> for the applied load for class III L devices; and~~**
>
> **~~(b)~~ ~~the absolute value of the applicable tolerance for the
> applied load for all other devices.~~**
>
> **(Amended 1989 [and 200X]{.underline})**

The SMA agrees with the proposed tolerances and recommends that the
remaining proposed new paragraph be added NCWM Publication 14 through
the Weighing Sector. The SMA agreed that Publication 14 requirements
should be traceable to NIST Handbook 44; however, there is no need to
overload Handbook 44 to provide that same traceability. The SMA agrees
that its alternate proposal provides the necessary traceability.

The SMA believes this is a harmonization issue. The SMA supports
harmonization of U.S. and international requirements, but is concerned
about the potential for unnecessarily increasing evaluation costs. The
SMA does support this effort toward harmonization provided NTEP waives
the resulting additional evaluation of existing devices.

####### 320-9 List of International Symbols Noted as Acceptable

**Source:** Southern Weights and Measures Association (SWMA)

**Recommendation:** Add a new list of international symbols that are
acceptable as follows:

**[List of Acceptable Abbreviations/Symbols]{.underline}**

+-----------------+-----------------+----------------+----------------+
| **Device        | **[Term         | **[Acceptable] | **Not          |
| Application**   | ]{.underline}** | {.underline}** | [Acceptable]   |
|                 |                 |                | {.underline}** |
+=================+=================+================+================+
| **The following |                 |                |                |
| symbols are     |                 |                |                |
| intended for    |                 |                |                |
| operator        |                 |                |                |
| controls,       |                 |                |                |
| indications,    |                 |                |                |
| and features.   |                 |                |                |
| When they are   |                 |                |                |
| also intended   |                 |                |                |
| for the         |                 |                |                |
| customer        |                 |                |                |
| (including      |                 |                |                |
| cu              |                 |                |                |
| stomer-operated |                 |                |                |
| devices) they   |                 |                |                |
| cannot be used  |                 |                |                |
| without         |                 |                |                |
| additional      |                 |                |                |
| descriptions,   |                 |                |                |
| directions, or  |                 |                |                |
| marks displayed |                 |                |                |
| or marked on    |                 |                |                |
| the device.**   |                 |                |                |
+-----------------+-----------------+----------------+----------------+
| **[Operational  | **[zero key or  | ![](media      | **["z" alone   |
| Controls,       | center          | /image5.png){w | is not         |
| ]{.underline}** | of              | idth="0.272916 | acceptable     |
|                 | ]{.underline}** | 66666666664in" | unless term in |
| **[Indications, |                 | hei            | defined on     |
| Features:       | **[zero         | ght="0.2368055 | device]        |
| ]{.underline}** | indicator       | 5555555555in"} | {.underline}** |
|                 | ]{.underline}** |                |                |
| **[Operational  |                 |                |                |
| Controls,       |                 |                |                |
| ]{.underline}** |                 |                |                |
|                 |                 |                |                |
| **[Indications, |                 |                |                |
| Features:       |                 |                |                |
| ]{.underline}** |                 |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Off          | ![](medi       |                |
|                 | (Power)         | a/image6.png){ |                |
|                 | ]{.underline}** | width="0.29166 |                |
|                 |                 | 66666666667in" |                |
|                 |                 | he             |                |
|                 |                 | ight="0.291666 |                |
|                 |                 | 6666666667in"} |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[On           | ![](med        |                |
|                 | (Power)         | ia/image7.wmf) |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[On/Off       | ![](med        |                |
|                 | (Power)         | ia/image8.wmf) |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Print        | ![](medi       |                |
|                 | ]{.underline}** | a/image9.png){ |                |
|                 |                 | width="0.41666 |                |
|                 |                 | 66666666667in" |                |
|                 |                 | he             |                |
|                 |                 | ight="0.305555 |                |
|                 |                 | 5555555556in"} |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Weighing     | ![](medi       |                |
|                 | ]{.underline}** | a/image10.wmf) |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Scale n (n   | ![](medi       |                |
|                 | = 1. 2.         | a/image11.wmf) |                |
|                 | \...)           |                |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Range n (n = | ![](medi       |                |
|                 | 1, 2,           | a/image12.wmf) |                |
|                 | \...)           |                |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[High         | ![](medi       |                |
|                 | resolution      | a/image13.wmf) |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[enter        | ![](media      |                |
|                 | key             | /image14.png){ |                |
|                 | ]{.underline}** | width="0.54583 |                |
|                 |                 | 33333333333in" |                |
|                 |                 | he             |                |
|                 |                 | ight="0.567361 |                |
|                 |                 | 1111111111in"} |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[tare enter   | ![](media      |                |
|                 | key             | /image15.png){ |                |
|                 | ]{.underline}** | width="0.35972 |                |
|                 |                 | 22222222222in" |                |
|                 |                 | hei            |                |
|                 |                 | ght="0.3048611 |                |
|                 |                 | 1111111114in"} |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[tare clear   | ![](media/     |                |
|                 | key             | image16.png){w |                |
|                 | ]{.underline}** | idth="0.675in" |                |
|                 |                 | he             |                |
|                 |                 | ight="0.508333 |                |
|                 |                 | 3333333333in"} |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[tare         | ![](media      | ![](media      |
|                 | enter/tare      | /image17.png){ | /image18.png){ |
|                 | clear           | width="0.54097 | width="0.63541 |
|                 | ]{.underline}** | 22222222222in" | 66666666666in" |
|                 |                 | he             | he             |
|                 |                 | ight="0.514583 | ight="0.539583 |
|                 |                 | 3333333333in"} | 3333333333in"} |
+-----------------+-----------------+----------------+----------------+
|                 | **[verify       | ![](media      |                |
|                 | tare            | /image19.png){ |                |
|                 | ]{.underline}** | width="0.58194 |                |
|                 |                 | 44444444445in" |                |
|                 |                 | hei            |                |
|                 |                 | ght="0.4430555 |                |
|                 |                 | 5555555554in"} |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Not for      | ![](medi       |                |
|                 | direct sales to | a/image20.wmf) |                |
|                 | the             |                |                |
|                 | public          |                |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Combined     | ![](medi       |                |
|                 | zero/tare --    | a/image21.wmf) |                |
|                 | See S.2.1.5.    |                |                |
|                 | for additional  |                |                |
|                 | information     |                |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Taring       | ![](medi       |                |
|                 | ]{.underline}** | a/image22.wmf) |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Mass/Weight  | ![](medi       |                |
|                 | ]{.underline}** | a/image23.wmf) |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Money        | ![](medi       |                |
|                 | ]{.underline}** | a/image24.wmf) |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Price Per    | ![](medi       |                |
|                 | weight          | a/image25.wmf) |                |
|                 | unit            |                |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Piece        | ![](medi       |                |
|                 | count           | a/image26.wmf) |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Counter      | ![](medi       |                |
|                 | ]{.underline}** | a/image27.wmf) |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Read         | ![](medi       |                |
|                 | Counter         | a/image28.wmf) |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Print        | ![](medi       |                |
|                 | certificate     | a/image29.wmf) |                |
|                 | ]{.underline}** |                |                |
+-----------------+-----------------+----------------+----------------+
|                 | **[Information  | ![](medi       |                |
|                 | ]{.underline}** | a/image30.wmf) |                |
+-----------------+-----------------+----------------+----------------+

**Discussion:** The proposed list of symbols introduces the U.S. weights
and measures official to a set of international symbols for use in
marking operator controls, indications, and device features. Recognition
and use of these symbols is consistent with efforts to harmonize U.S.
and international device requirements.

Currently, the list of symbols is part of NTEP Publication 14 "Technical
Policy, Checklists, and Test Procedures" for Weighing Devices. NTEP uses
international symbol whenever possible. Style differences such as
variations in the shape of arrows are acceptable.

The Scale Manufacturers Association (SMA) noted that these symbols are
accepted internationally and registered with the DIN (Deutsches Institut
FÜr Normung) (Germany) and IEC (International Electrotechnical
Commission). SMA also pointed out that it is likely most symbols will be
defined in the operator's manual since they identify controls and
features used to operate the device.

The Southern Weights and Measures Association (SWMA) heard several
concerns about the initial use of the international symbols. Most
weights and measures officials do not have access to Publication 14 or
other international documents. Consequently, it was suggested that NCWM
and NIST post the list on their web sites and incorporate the symbols
into bulletins, examination procedure outlines, and inspector training
modules. The increased number of customer-operated devices would require
additional markings or descriptions along with the symbols. This is
especially true for symbols that represent Not for Direct Sales, Money,
and Price per Unit Weight which are not well known in the United States.
Once customers become familiar with the symbols, descriptions would no
longer be necessary and the list of symbols would not be necessary in
Publication 14.

The SWMA agreed that the proposed list of symbols would best serve field
officials if placed in Handbook 44 as an appendix.

###### 321 BELT-CONVEYOR SCALE SYSTEMS

####### 321-1 UR.3.4. Diversion of Measured Product 

**Source:** Western Weights and Measures Association (WWMA)

**Recommendation:** Add new paragraph UR.3.4. as follows:

**[UR.3.4. Diversion of Measured Product. -- There shall be no diversion
of measured product.]{.underline}**

**[(Added 200X)]{.underline}**

**Discussion:** The proposal intends to ensure that all product measured
on the scale is delivered to the customer. There are several
circumstances where the final amount of a commodity weighed on the
system's scale can be affected by operator practices. For instance,
taking commodity samples or movement of commodities on belt conveyors
over long distances, where product slippage from the belt can result in
product loss before the customer has custody of the commodity. Without
records, any major spillage results in an inaccurate payment for
delivered product. The chain-of-custody of weighed material between the
scale to the end point of a conveyor system should be maintained at all
times. The diversion of a measured commodity by as much as 0.1 % becomes
significant over a 10-year period and can affect royalty payments,
taxes, and even have an environmental impact for some commodities.

Originally, the Western Weights and Measures Association (WWMA) and
Central Weights and Measures Association (CWMA) considered an industry
proposal to amend existing paragraphs UR.3.2. and UR.3.3. to address
diversion of commodities by requiring this material be measured and
recorded.

Previously weighed material spilled and left on the ground or hauled
back to the raw storage pile (and likely reweighed) result in a loss to
the buyer. The end result is no record of spillage and no credit given
to the buyer.

The WWMA heard comments from a manufacturer that supported the concept,
but found the "measurable diversion of weighed material" somewhat
ambiguous. The WWMA believes that the intent of the proposal could be
better stated and simplified. Consequently, the WWMA modified industry's
proposal as shown in the recommendation above by only adding a new
paragraph UR.3.4. Diversion of Measured Product rather than suggesting
changes to existing paragraphs UR.3.2. and UR.3.3..

The CWMA withdrew the industry's proposal from its agenda because no
data was provided to demonstrate there is an issue with diverted
product. The CWMA also noted that the use of the term "diverted" implies
fraud.

###### 322 AUTOMATIC BULK WEIGHING SYSTEMS

####### 322-1 Tolerances

**Source:** Carryover Item 322-1. (This item originated from the
Northeastern Weights and Measures Association (NEWMA) and first appeared
on the Committee's 2002 agenda.)

**Recommendation:** Delete paragraphs T.1.4., T.2., T.2.1, T.3.2. and
T.3.3.as follows:

> **~~T.1.4. To Tests Involving Digital Indications or
> Representations. - To the tolerances that would otherwise be applied,
> there shall be added an amount equal to one-half the value of the
> scale division. This does not apply to digital indications or recorded
> representations that have been corrected for rounding using error
> weights.~~**
>
> **~~T.2. Minimum Tolerance Values. - The minimum tolerance value shall
> not be less than half the value of the scale division.~~**
>
> **~~T.2.1. For Systems used to Weigh Construction Materials. - The
> minimum maintenance and acceptance tolerance shall~~ ~~be 0.1 % of the
> weighing capacity of the system, or the value of the scale division,
> whichever is less~~.**
>
> **~~T.3.2. For Systems used to Weigh Grain. - The basic maintenance
> tolerance shall be 0.1 % of test load.~~**
>
> **~~T.3.3. For all Other Systems. - The basic maintenance tolerance
> shall be 0.2 % of test load.~~**

Renumber paragraph T.3. and renumber and modify T.3.1. as follows:

> **T.~~3~~.[2]{.underline}. Basic Tolerance Values.**
>
> **T.~~3~~.[2]{.underline}.1. Acceptance Tolerance. -**The basic
> acceptance tolerance shall be one-half the basic maintenance
> tolerance**[, but never less than 1 division.]{.underline}**
>
> **[(Amended 200X)]{.underline}**

Add new paragraphs T.2.2., T.2.3., and T.2.3.1. and Table 1. and Table
2. as follows:

T.2.2. General. - The tolerance applicable to devices not marked with an
accuracy class shall have the tolerances applied as specified in
Table 1. below.

+-------------+--------------------+--------------+------------------+
| **[Table 1. |                    |              |                  |
| Tolerance   |                    |              |                  |
| for         |                    |              |                  |
| Unmarked    |                    |              |                  |
| Scales]{.u  |                    |              |                  |
| nderline}** |                    |              |                  |
+-------------+--------------------+--------------+------------------+
| ##          | **[Tolera          | *            | **[Other         |
| ####### Typ | nce]{.underline}** | *[Decreasing | applicable       |
| e of Device |                    | Load         | Requirement      |
|             |                    | M            | s]{.underline}** |
|             |                    | ultiplier]{. |                  |
|             |                    | underline}** |                  |
+-------------+--------------------+--------------+------------------+
| **[Grain    | **[Class III,      | **[1.0]{.    | **[T.2.1.,       |
| Hoppers]{.u | T.2.3 (table       | underline}** | T.2.3.           |
| nderline}** | 2)]{.underline}**  |              | 1]{.underline}** |
+-------------+--------------------+--------------+------------------+
| **[Other    | **[Class III L,    | **[1.0]{.    | **[T.2.1.,       |
| Systems]{.u | T.2.3 (table       | underline}** | T.2.3.           |
| nderline}** | 2)]{.underline}**  |              | 1]{.underline}** |
+-------------+--------------------+--------------+------------------+

**(Added 200X)**

[T.2.3. Tolerances Applicable to Devices Marked III or III
L.]{.underline}

> **[T.2.3.1. Maintenance Tolerance Values - The maintenance tolerance
> values are specified in Table 2 below.]{.underline}**

+-----------+------------+-----------+-----------+-------------------+
| **[Table  |            |           |           |                   |
| 2.        |            |           |           |                   |
| Ma        |            |           |           |                   |
| intenance |            |           |           |                   |
| Tolerance |            |           |           |                   |
| for       |            |           |           |                   |
| Marked    |            |           |           |                   |
| Sca       |            |           |           |                   |
| les]{.und |            |           |           |                   |
| erline}** |            |           |           |                   |
|           |            |           |           |                   |
| **[(All   |            |           |           |                   |
| values in |            |           |           |                   |
| this      |            |           |           |                   |
| table are |            |           |           |                   |
| in scale  |            |           |           |                   |
| divisio   |            |           |           |                   |
| ns)]{.und |            |           |           |                   |
| erline}** |            |           |           |                   |
|           |            |           |           |                   |
| **[       |            |           |           |                   |
| Tolerance |            |           |           |                   |
| in scale  |            |           |           |                   |
| divisi    |            |           |           |                   |
| ons]{.und |            |           |           |                   |
| erline}** |            |           |           |                   |
+-----------+------------+-----------+-----------+-------------------+
|           | **[1]{.un  | *         | *         | **                |
|           | derline}** | *[2]{.und | *[3]{.und | [5]{.underline}** |
|           |            | erline}** | erline}** |                   |
+-----------+------------+-----------+-----------+-------------------+
| **[Cl     | **[Test    |           |           |                   |
| ass]{.und | Load]{.un  |           |           |                   |
| erline}** | derline}** |           |           |                   |
+-----------+------------+-----------+-----------+-------------------+
| **[       | **[0 --    | **[501 -  | **[2001   | **[4001           |
| III]{.und | 500]{.un   | 2         | --        | +]{.underline}**  |
| erline}** | derline}** | 000]{.und | 4         |                   |
|           |            | erline}** | 000]{.und |                   |
|           |            |           | erline}** |                   |
+-----------+------------+-----------+-----------+-------------------+
| **[III    | **[0 --    | **[501 -  | **[(Add   |                   |
| L]{.und   | 500]{.un   | 1         | 1d for    |                   |
| erline}** | derline}** | 000]{.und | each      |                   |
|           |            | erline}** | a         |                   |
|           |            |           | dditional |                   |
|           |            |           | 500 d or  |                   |
|           |            |           | fraction  |                   |
|           |            |           | there     |                   |
|           |            |           | of)]{.und |                   |
|           |            |           | erline}** |                   |
+-----------+------------+-----------+-----------+-------------------+

**[(Added 200X)]{.underline}**

Add a new footnote to Section 2.20 Scales Code Table 1.1.1. Tolerances
for Unmarked Scales as follows:

> **[^X^Automatic bulk weighing systems see Section 2.22 for
> specifications and tolerances.]{.underline}**
>
> **[(Added 200X)]{.underline}**

**Discussion:** Since 2002, the Committee has considered a proposal to
change the automatic bulk weighing systems tolerances from a percentage
basis to division values, which are based on the device's accuracy
class. The proposal was intended to align tolerances in the Automatic
Bulk Weighing Systems (ABWS) Code and the Scales Code.

The Committee has kept the proposal as an information item to allow
interested parties sufficient time to work through issues surrounding
the permissible system errors and other concerns. The U.S. Grain
Inspection, Packers and Stockyard Administration (GIPSA) indicated
opposition to the proposed tolerances because of concerns about the
allowable cumulative error in a system's performance. GIPSA also noted
that NEWMA indicated that some asphalt and cement plants use hopper
scales that are considered ABWS by officials because these devices are
capable of weighing single and multiple drafts, while other
jurisdictions classify these devices as hopper scales, which are held to
different tolerances. During past discussions, the Committee questioned
whether training would help clarify any confusion that exists over which
systems fall under the ABWS Code. The Committee noted that a hopper
modified to include a controller and is only capable of weighing several
drafts is an automated hopper, not an ABWS.

*Grain Inspection, Packers and Stockyard Administration Position*

In 2004, GIPSA submitted the following position to the Committee for
consideration. In 1986 when the ABWS Code was established, those systems
were recognized as a special type and design. The tolerances for grain
scales in this code were kept as a percentage so they would be
proportional throughout the entire test load. The proposed step
tolerance structure is not proportional throughout the system's entire
weighing range and would double the allowable tolerance for test loads
in some scale configurations. GIPSA believes the proposed structure
might encourage scale owners to inappropriately select a scale
configuration that permits the greater tolerance. Furthermore, under the
proposed step tolerance structure, if some weights and measures
jurisdictions do not apply the tolerance to the grain and test weights
(test load) when conducting substitution tests, then the allowable error
doubles up through the entire system's capacity.

Since 1986, the ABWS Code percentage tolerance for grain scales has
served the grain industry well and there has not been any interest in
changing the tolerance structure. In view of GIPSA's 17-year history of
successful implementation of the ABWS Code in grain scale applications
and the high level of understanding and acceptance of the code, GIPSA
believes that the rationale behind NEWMA's proposal does not warrant a
change to grain scale tolerances. GIPSA provided three tables to
demonstrate its position. The tables are intended to show a comparison
of a 0.1 % tolerance and Table 6 Accuracy Class III tolerance applied to
a 120 000 lb x 20 lb and 50 000 lb x 10 lb device, given a specific
amount of test weights and using the substitution test method during the
increasing load test.

<table style="width:100%;">
<colgroup>
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 5%" />
<col style="width: 8%" />
<col style="width: 13%" />
</colgroup>
<tbody>
<tr class="odd">
<td colspan="12"><p>GIPSA Comparison of 0.1 % Tolerance to Accuracy
Class III Tolerances</p>
<p>120 000 lb x 20 lb ABWS</p></td>
</tr>
<tr class="even">
<td><p>Indicated</p>
<p>Grain</p>
<p>Weight</p>
<p>(lb)</p></td>
<td><p>Error</p>
<p>In Grain Weight</p>
<p>(lb)</p></td>
<td><p>Actual Grain</p>
<p>Weight</p>
<p>(lb)</p></td>
<td><p>Test</p>
<p>Weights</p>
<p>(lb)</p></td>
<td><p>Indicated</p>
<p>Weight</p>
<p>(lb)</p></td>
<td><p>Error for Indicated</p>
<p>Weigh-ment</p>
<p>(lb)</p></td>
<td><p>0.1 % Tolerance on Test</p>
<p>Weights</p>
<p>(lb)</p></td>
<td><p>Error</p>
<p>on</p>
<p>Accum-ulated</p>
<p>Test Load</p>
<p>(lb)</p></td>
<td><p>0.1 %</p>
<p>Tolerance on Accumu-lated</p>
<p>Test Load</p>
<p>(lb)</p></td>
<td><strong>n</strong></td>
<td><p>Class III</p>
<p>Tolerance</p>
<p>On Test</p>
<p>Weights</p>
<p>(lb)</p></td>
<td><p>Class III</p>
<p>Tolerance on Accumulated Test Load</p>
<p>(lb)</p></td>
</tr>
<tr class="odd">
<td>0</td>
<td>0</td>
<td>0</td>
<td>12000</td>
<td>11980</td>
<td>-20</td>
<td>20</td>
<td>-20</td>
<td>20</td>
<td>600</td>
<td>40<sup>b</sup></td>
<td>40<sup>b</sup></td>
</tr>
<tr class="even">
<td>11980</td>
<td>-20</td>
<td>12000</td>
<td>12000</td>
<td>23960</td>
<td>-20</td>
<td>20</td>
<td>-40<sup>a</sup></td>
<td>24</td>
<td>1200</td>
<td>40<sup>b</sup></td>
<td>40<sup>b</sup></td>
</tr>
<tr class="odd">
<td>23960</td>
<td>-40</td>
<td>24000</td>
<td>12000</td>
<td>35960</td>
<td>0</td>
<td>20</td>
<td>-40<sup>a</sup></td>
<td>36</td>
<td>1800</td>
<td>40<sup>b</sup></td>
<td>40<sup>b</sup></td>
</tr>
<tr class="even">
<td>35960</td>
<td>-40</td>
<td>36000</td>
<td>12000</td>
<td>47980</td>
<td>+20</td>
<td>20</td>
<td>-20</td>
<td>48</td>
<td>2400</td>
<td>40<sup>b</sup></td>
<td>60<sup>b</sup></td>
</tr>
<tr class="odd">
<td>47980</td>
<td>-20</td>
<td>48000</td>
<td>12000</td>
<td>60000</td>
<td>+20</td>
<td>20</td>
<td>0</td>
<td>60</td>
<td>3000</td>
<td>40<sup>b</sup></td>
<td>60</td>
</tr>
<tr class="even">
<td>60000</td>
<td>0</td>
<td>60000</td>
<td>12000</td>
<td>72000</td>
<td>0</td>
<td>20</td>
<td>0</td>
<td>72</td>
<td>3600</td>
<td>40<sup>b</sup></td>
<td>60<sup>c</sup></td>
</tr>
<tr class="odd">
<td>72000</td>
<td>0</td>
<td>72000</td>
<td>12000</td>
<td>84020</td>
<td>+20</td>
<td>20</td>
<td>+20</td>
<td>84</td>
<td>4200</td>
<td>40<sup>b</sup></td>
<td>100<sup>b</sup></td>
</tr>
<tr class="even">
<td>84000</td>
<td>+20</td>
<td>83980</td>
<td>12000</td>
<td>96000</td>
<td>0</td>
<td>20</td>
<td>+20</td>
<td>96</td>
<td>4800</td>
<td>40<sup>b</sup></td>
<td>100<sup>b</sup></td>
</tr>
<tr class="odd">
<td>96020</td>
<td>+20</td>
<td>96000</td>
<td>12000</td>
<td>108040</td>
<td>+20</td>
<td>20</td>
<td>+40</td>
<td>108</td>
<td>5400</td>
<td>40<sup>b</sup></td>
<td>100<sup>c</sup></td>
</tr>
<tr class="even">
<td>107900</td>
<td>+40</td>
<td>107860</td>
<td>12000</td>
<td>119920</td>
<td>+20</td>
<td>20</td>
<td>+60</td>
<td>120</td>
<td>6000</td>
<td>40<sup>b</sup></td>
<td>100<sup>c</sup></td>
</tr>
</tbody>
</table>

^a^ Error exceeds the current allowable 0.1 % tolerance

^b^ Value expressed as an Accuracy Class III tolerance is greater than
the current ABWS Code 0.1 % tolerance

^c^ Value expressed as an Accuracy Class III tolerance is less than the
current ABWS Code 0.1 % tolerance

<table>
<colgroup>
<col style="width: 9%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 6%" />
<col style="width: 8%" />
<col style="width: 12%" />
</colgroup>
<tbody>
<tr class="odd">
<td colspan="12"><p>GIPSA Comparison of 0.1 % Tolerance to Accuracy
Class III Tolerances</p>
<p>50 000 lb x 10 lb ABWS</p></td>
</tr>
<tr class="even">
<td><p>Indicated</p>
<p>Grain</p>
<p>Weight</p>
<p>(lb)</p></td>
<td><p>Error</p>
<p>In Grain Weight</p>
<p>(lb)</p></td>
<td><p>Actual Grain</p>
<p>Weight</p>
<p>(lb)</p></td>
<td><p>Test</p>
<p>Weights</p>
<p>(lb)</p></td>
<td><p>Indicated</p>
<p>Weight</p>
<p>(lb)</p></td>
<td><p>Error for Indicated</p>
<p>Weigh-ment</p>
<p>(lb)</p></td>
<td><p>0.1 % Tolerance on Test</p>
<p>Weights</p>
<p>(lb)</p></td>
<td><p>Error</p>
<p>on</p>
<p>Accum-ulated</p>
<p>Test Load</p>
<p>(lb)</p></td>
<td><p>0.1 %</p>
<p>Tolerance on Accumu-lated</p>
<p>Test Load</p>
<p>(lb)</p></td>
<td><strong>n</strong></td>
<td><p>Class III</p>
<p>Tolerance</p>
<p>On Test</p>
<p>Weights</p>
<p>(lb)</p></td>
<td><p>Class III</p>
<p>Tolerance on Accumulated Test Load</p>
<p>(lb)</p></td>
</tr>
<tr class="odd">
<td>0</td>
<td>0</td>
<td>0</td>
<td>5000</td>
<td>5010</td>
<td>+10</td>
<td>10</td>
<td>+10</td>
<td>10</td>
<td>500</td>
<td>10</td>
<td>10</td>
</tr>
<tr class="even">
<td>5010</td>
<td>+10</td>
<td>5000</td>
<td>5000</td>
<td>10010</td>
<td>0</td>
<td>10</td>
<td>+10</td>
<td>10</td>
<td>1000</td>
<td>10</td>
<td>20<sup>b</sup></td>
</tr>
<tr class="odd">
<td>10020</td>
<td>+10</td>
<td>10010</td>
<td>5000</td>
<td>15000</td>
<td>-20<sup>a</sup></td>
<td>10</td>
<td>-10</td>
<td>15</td>
<td>1500</td>
<td>10</td>
<td>20<sup>b</sup></td>
</tr>
<tr class="even">
<td>15020</td>
<td>-10</td>
<td>15030</td>
<td>5000</td>
<td>20020</td>
<td>0</td>
<td>10</td>
<td>-10</td>
<td>20</td>
<td>2000</td>
<td>10</td>
<td>20</td>
</tr>
<tr class="odd">
<td>20020</td>
<td>-10</td>
<td>20030</td>
<td>5000</td>
<td>25010</td>
<td>-10</td>
<td>10</td>
<td>-20</td>
<td>25</td>
<td>2500</td>
<td>10</td>
<td>30<sup>b</sup></td>
</tr>
<tr class="even">
<td>25030</td>
<td>-20</td>
<td>25050</td>
<td>5000</td>
<td>30010</td>
<td>-20<sup>a</sup></td>
<td>10</td>
<td>-40<sup>a</sup></td>
<td>30</td>
<td>3000</td>
<td>10</td>
<td>30</td>
</tr>
<tr class="odd">
<td>30030</td>
<td>-40</td>
<td>30070</td>
<td>5000</td>
<td>35030</td>
<td>0</td>
<td>10</td>
<td>-40<sup>a</sup></td>
<td>35</td>
<td>3500</td>
<td>10</td>
<td>30<sup>c</sup></td>
</tr>
<tr class="even">
<td>35030</td>
<td>-40</td>
<td>35070</td>
<td>5000</td>
<td>40030</td>
<td>0</td>
<td>10</td>
<td>-40</td>
<td>40</td>
<td>4000</td>
<td>10</td>
<td>30<sup>c</sup></td>
</tr>
<tr class="odd">
<td>40040</td>
<td>-40</td>
<td>40080</td>
<td>5000</td>
<td>45040</td>
<td>0</td>
<td>10</td>
<td>-40</td>
<td>45</td>
<td>4500</td>
<td>10</td>
<td>50<sup>b</sup></td>
</tr>
<tr class="even">
<td>45040</td>
<td>-40</td>
<td>45080</td>
<td>5000</td>
<td>50030</td>
<td>-10</td>
<td>10</td>
<td>-50</td>
<td>50</td>
<td>5000</td>
<td>10</td>
<td>50</td>
</tr>
</tbody>
</table>

^a^ Error exceeds the current allowable 0.1 % tolerance

^b^ Value expressed as an Accuracy Class III tolerance is greater than
the current ABWS Code 0.1 % tolerance

^c^ Value expressed as an Accuracy Class III tolerance is less than the
current ABWS Code 0.1 % tolerance

+-----------------+----------+---------------+------------------------+
| GIPSA           |          |               |                        |
| Comparison of   |          |               |                        |
| 0.1 % Tolerance |          |               |                        |
| to Accuracy     |          |               |                        |
| Class III       |          |               |                        |
| Tolerances      |          |               |                        |
|                 |          |               |                        |
| For Typical     |          |               |                        |
| ABWS Used in    |          |               |                        |
| Grain Weighing  |          |               |                        |
+=================+==========+===============+========================+
| Scale Capacity  | Test     | Current       | Proposed Accuracy      |
| x division      | Load     | Handbook 44   | Class III Tolerances   |
|                 |          | Tolerance     |                        |
|                 | (lb)     |               | \[accumulated test     |
|                 |          | (lb)          | load tolerance\]\      |
|                 |          |               | (lb)                   |
+-----------------+----------+---------------+------------------------+
| 5,000 lb x 0.5  | 500      | 0.5           | 1                      |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 5,000    | 5             | 2.5 \[10\]             |
+-----------------+----------+---------------+------------------------+
| 5,000 lb x 1 lb | 500      | 1             | 1                      |
+-----------------+----------+---------------+------------------------+
|                 | 5,000    | 5             | 5 \[10\]               |
+-----------------+----------+---------------+------------------------+
| 5,000 lb x 2 lb | 500      | 2             | 2                      |
+-----------------+----------+---------------+------------------------+
|                 | 5,000    | 5             | 6 \[20\]               |
+-----------------+----------+---------------+------------------------+
| 10,000 lb x 1   | 1,000    | 1             | 2                      |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 10,000   | 10            | 5 \[20\]               |
+-----------------+----------+---------------+------------------------+
| 10,000 lb x 2   | 1,000    | 2             | 2                      |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 10,000   | 10            | 10 \[20\]              |
+-----------------+----------+---------------+------------------------+
| 10,000 lb x 5   | 1,000    | 5             | 5                      |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 10,000   | 10            | 10 \[50\]              |
+-----------------+----------+---------------+------------------------+
| 20,000 lb x 2   | 2,000    | 2             | 4                      |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 20,000   | 20            | 5 \[40\]               |
+-----------------+----------+---------------+------------------------+
| 20,000 lb x 5   | 2,000    | 5             | 5                      |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 20,000   | 20            | 15 \[50\]              |
+-----------------+----------+---------------+------------------------+
| 30,000 lb x 5   | 3,000    | 5             | 10                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 30,000   | 30            | 25 \[100\]             |
+-----------------+----------+---------------+------------------------+
| 30,000 lb x 10  | 3,000    | 10            | 10                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 30,000   | 30            | 30 \[100\]             |
+-----------------+----------+---------------+------------------------+
| 50,000 lb x 5   | 5,000    | 5             | 10                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 50,000   | 50            | 25 \[100\]             |
+-----------------+----------+---------------+------------------------+
| 50,000 lb x 10  | 5,000    | 10            | 10                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 50,000   | 50            | 50 \[100\]             |
+-----------------+----------+---------------+------------------------+
| 50,000 lb x 20  | 5,000    | 20            | 20                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 50,000   | 50            | 60 \[200\]             |
+-----------------+----------+---------------+------------------------+
| 75,000 lb x 10  | 7,500    | 10            | 20                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 75,000   | 75            | 50 \[200\]             |
+-----------------+----------+---------------+------------------------+
| 75,000 lb x 20  | 7,500    | 20            | 20                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 75,000   | 75            | 60 \[200\]             |
+-----------------+----------+---------------+------------------------+
| 100,000 lb x 10 | 10,000   | 10            | 20                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 100,000  | 100           | 50 \[200\]             |
+-----------------+----------+---------------+------------------------+
| 100,000 lb x 20 | 10,000   | 20            | 20                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 100,000  | 100           | 100 \[200\]            |
+-----------------+----------+---------------+------------------------+
| 100,000 lb x 50 | 10,000   | 50            | 50                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 100,000  | 100           | 100 \[500\]            |
+-----------------+----------+---------------+------------------------+
| 120,000 lb x 20 | 12,000   | 20            | 40                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 120,000  | 120           | 100 \[400\]            |
+-----------------+----------+---------------+------------------------+
| 120,000 lb x 50 | 12,000   | 50            | 50                     |
| lb              |          |               |                        |
+-----------------+----------+---------------+------------------------+
|                 | 120,000  | 120           | 150 \[500\]            |
+-----------------+----------+---------------+------------------------+

*Western Weights and Measures Association (WWMA) Position*

The WWMA heard no comments on the proposal, but remains concerned about
the potential cumulative effect of allowable errors that are the result
of the proposed step tolerances.

*Northeastern Weights and Measures Association (NEWMA) Position*

NEWMA does not intend the proposal to require that operators of grain
hopper scales replace their scales. NEWMA indicated there are apparent
similarities between a 0.1 % and Accuracy Class III tolerance
structures. NEWMA finds the tolerance structures are closely aligned,
yet slightly different at various points. Consequently, it will always
be possible to cite borderline examples where the test results at
selective test loads may produce differing "pass" or "fail" results on a
particular scale. This difference can work both ways where application
of percent tolerances may pass a scale when Class III tolerances would
fail that same device and vice versa.

NEWMA believes the 0.1 % tolerance structure in the current ABWS Code
emphasizes accuracy primarily at the device's lower capacity ranges.
Manufacturers may indicate they are only concerned with a device's
performance at 500 d because if the device can pass at that point then
it will pass throughout its entire capacity range. In contrast, the
Class III tolerance structure places an emphasis on accuracy at the
higher scale capacities, which is typically where the scale will be
used. For example, at 4000 d the Class III tolerance is actually 1 d
tighter than the 0.1 % tolerance. NEWMA finds these differences to be
minor.

The concerns heard in 1986 about a less stringent tolerance for loads
slightly above 500 d are not the same today because officials know how
to properly conduct a substitution test. This is due, in part, to work
in 2003 to clarify the definition for substitution test.

NEWMA provided the graph shown below to demonstrate the slight
differences in the scale tolerance structures. The graph includes a
plotted scale error of 0.12 %. NEWMA notes that it is unlikely that
either tolerance structure would result in a failure rate until the test
load exceeds 50 000 lb. The graph also includes a "load cell curve" that
often appears on high resolution electronic scales like those in the
GIPSA examples. NEWMA contends that, if you examine the population
rather than the individual scale, the overall outcome of a test will be
the same in the end for both tolerance structures. It also is unlikely
that device users could take advantage of the tolerance if adjustments
are made as close as practicable to zero error.

![](media/image31.wmf)

NEWMA also contends that there is no significant difference in the
design of a manual hopper scale or a hopper scale used in an ABWS. NEWMA
does not see manufacturers offer two different models of hopper or use
different load cells based on whether or not a device is evaluated under
the Scales Code or ABWS Code. History seems to indicate that the 0.1 %
tolerance was retained in the ABWS Code in 1986 not because these were
unique devices, but primarily because it was too great of a change for
many at that time. History also indicates that the 5 d tolerance step
for Accuracy Class III was a compromise to those who did not want to
lose the 0.1 % tolerance structure and the use of scales with small
division sizes. NEWMA believes that in 1986 a majority of ABWSs were
mechanical analog devices, whereas today they are predominantly
electronic.

NEWMA noted that the change in applicable tolerances from 0.1 %
tolerance to an Accuracy Class tolerance structure did not seem to pose
a significant problem for a large number of other weighing devices.
Between 1990 and 1993, the NCWM made a number of changes to the Scales
Code Table T.1.1. Tolerances for Unmarked Scales. These changes brought
most of the unmarked scales, initially grand fathered in 1986 at a 0.1 %
tolerance, under the Class III tolerance structure. As part of those
changes the old decreasing load multiplier was reduced from 1.5 to 1.0.
NEWMA does not remember a significant increase in device rejections
following these transition periods.

NEWMA cites the major reason for its proposal is to make the application
of tolerances easier for the inspector. NEWMA finds that applying a
percent tolerance is difficult and somewhat subjective, since the
official is faced with the difficulty in understanding and correctly
applying the minimum tolerance and in dealing with rounding errors at
intermediate test loads. NEWMA believes that, if you polled any group of
officials and asked them to make a tolerance chart for any given ABWS
device, you will probably get many different answers. NEWMA notes that
in GIPSA's first example there is a tolerance of 40 lb for a 24 000 lb
test load. However, the actual tolerance is 34 lb, if using direct
reading. Should one round up or round down? What if the test load is 20
000 lb with a 30 lb tolerance, which is right at the break point between
graduations? In this instance is the tolerance 20 lb or 40 lb? Any
confusion is eliminated under the proposed Accuracy Class tolerance
structure.

NEWMA offers what it believes is one more compelling reason to move to
Class III tolerance and that is international trade. The NCWM is
embarking on a careful effort to consider harmonizing U.S. requirements
with OIML requirements. NEWMA believes that all U.S. regulatory agencies
should be part of this process to get the United States aligned with the
rest of the world. If the U.S. system is better, then we should work
together to change OIML standards. If OIML requirements are as good as
U. S. requirements, then there is compelling reason under the OIML
Treaty to be part of the world community. Adopting Class III Tolerance
would bring the United States closer to international standards.
Harmonization not only affects the sale of measuring devices, but also
their use. The United States exports a great deal of grain to the world.
Why shouldn't the United States and the rest of the world use a single
standard to verify the measurement of grain at all levels of commerce.

NEWMA forwarded to the S&T Committee a new survey developed by the New
York Weights and Measures Association. The survey asks participants to
respond by calculating, where appropriate, the total test load, scale
error, and tolerances for five test points on two systems (asphalt plant
and grain applications). The survey of the States is intended to provide
a "snap-shot" of how jurisdictions apply ABWS tolerances. The results
from this survey could be used to determine the future disposition of
this item. NEWMA heard the suggestion to consider hopper scales, other
than grain, as Class III devices, thus making the ABWS Code only
applicable to grain ABWSs under the jurisdiction of GIPSA. However, this
recommendation would require additional revision to the ABWS Code.

NEWMA continues to welcome the opportunity for more discussion with the
S&T Committee and GIPSA. NEWMA strongly believes that the very minor
differences in tolerance applications on a few borderline cases does not
justify having a unique code for a device that is identical in design
and performance to devices evaluated under the Scales Code. Anyone
wishing to discuss this proposal with NEWMA should contact Bill Wilson
(Clinton County, New York) at 518‑565‑4681, by fax at 518‑565‑4694, or
by email at <wilsonperu@aol.com> or Ross Andersen (New York) at
518‑457‑3146, by fax at 518‑457‑5693, or by email at
<ross.andersen@agmkt.state.ny.us>.

*The Central Weights and Measures (CWMA) Position*

The CWMA is concerned that the proposal may not have technical merit and
is the result of each regulatory agencies' preference for a particular
code format. The CWMA is also concerned that adopting the proposal will
effect step tolerances to the point that older devices with an n~max~
greater than 4000 d will not comply.

*NCWM S&T Committee Position*

In July 2004, the Committee stressed that a system, to be considered an
ABWS, must meet all ABWS Code specifications such as interlocks and
overfill sensors as well as performance requirements. There is ongoing
work to harmonize many U.S. requirements with OIML standards; however, R
107 "Discontinuous Totalizing Automatic Weighing Instruments (Totalizing
Hopper Weighers)," unlike the ABWS Code, requires a material test. The
U.S. and OIML procedures for substitution tests consider the use of
error weights to determine the scale's true performance and to avoid
introducing uncertainties in the test process. If error weights are not
used, the potential does exist for introducing additional error when the
known test load falls between tolerance break points in the accuracy
class structure.

The Committee heard testimony from GIPSA that all issues that might
arise from the proposal have not been examined, especially those
affecting the grain industry. GIPSA understands the need to harmonize
U.S. and OIML requirements, but recommended a closer examination of the
grain industry's concerns. The Committee believes that a U.S. National
Working Groups (USNWG) should be given serious consideration as a
possible forum to work on suitable ABWS tolerances. USNWGs bring public
and private sector representatives together that have experience and
expertise in a particular device area to work to resolve items on a
limited and device specific agenda. NIST USNWGs have made great strides
and had multiple successes in tackling many device specific issues. The
Committee decided to keep the proposal an information item to allow
GIPSA, NEWMA, the grain industry, and all other parties affected by the
proposed changes to the ABWS tolerances additional time to compare data
and come to an amenable and appropriate solution for ABWS tolerances.

For more background information, refer to the 2002, 2003, and 2004 S&T
Final Report.

###### 330 LIQUID-MEASURING DEVICES

####### 330-1 S.1.6.1.1. Indication of Delivery; Suppression Until Normal Delivery Pressure

**Source:** National Type Evaluation Technical Committee (NTETC)
Measuring Sector

**Recommendation:** Modify H44 Sec. 3.30. Paragraph S.1.6.1. Indication
of Delivery and add new paragraph S.1.6.1.1. for inhibiting measurement
and indication of delivery as follows:

> **S.1.6.1. Indication of Delivery.** **- The device shall
> auto­matically show on its face the initial zero condition and the
> quantity delivered (up to the nominal capacity).**
>
> **However, the first 0.03 L (or 0.009 gal) of a delivery and its
> as­sociated total sales price need not be indicated.**
>
> **[S.1.6.1.1. -- After the suppression of up to 0.03 L (or 0.009 gal)
> the measurement and indication of delivered quantity, and the
> indication of total price on a digital device shall be inhibited until
> the fueling position reaches normal delivery pressure.]{.underline}**
>
> **(Amended 1982 and 200X)**

**Discussion/Background:** At the 2004 Sector Meeting, Maryland Weights
and Measures stated that as the price for motor fuel nears or exceeds
\$2.00 per gallon, the number of complaints it receives regarding
computer jump have increased. WMD has received numerous calls from
jurisdictions related to this problem. It appears that the actual amount
of jump or meter creep occurring because of internal pressure changes
related to changes in temperature has not increased. However, at the
higher unit prices this relatively small meter creep creates a delivery
indication of several cents. Maryland and WMD provided a proposal to
eliminate the indication of computer jump for the Sector to consider.
The Sector agreed with the proposal in principle, but recommended some
changes to the language, as shown above and agreed to forward it to the
NCWM and Southern Weights and Measures Association (SWMA) S&T Committees
for consideration.

At its October 2004 Meeting, the SWMA heard no opposition to the
Measuring Sector proposal. One official asked if a similar requirement
should be added to the Handbook 44 Section 3.30. Liquid-Measuring
Devices, for wholesale meters and to Section 3.32. LPG and Anhydrous
Ammonia Liquid-Measuring Devices. The SWMA agreed to forward the
proposal to the Committee with the recommendation that it be a voting
item on the 2005 NCWM S&T Agenda. The SWMA also recommends that the
Committee consider adding similar requirements to Handbook 44 Sections
3.30. and 3.32. as appropriate.

####### 330-2 N.4.2.2. Retail Motor-Fuel Devices

**Source:** National Type Evaluation Technical Committee (NTETC)
Measuring Sector

> **Recommendation: Modify H44 Sec. 3.30 paragraph N.4.2.2. Retail
> Motor-Fuel as follows:**
>
> **N.4.2.2. Retail Motor-Fuel Devices.**
>
> \(a\) Devices with a flow-rate capacity less than
> 100 [115]{.underline} L (25 [30]{.underline} gal) per minute shall
> have a \"special\" test performed at the slower of the follow­ing
> rates:
>
> **(1) 19 L (5 gal) per minute, or**
>
> **(2) the minimum discharge rate marked on the device, or**
>
> **(3) the minimum discharge rate at which the device will deliver when
> equipped with an automatic discharge nozzle set at its slowest setting
> [provided it is not less than the marked minimum flow
> rate]{.underline}.**
>
> \(b\) Devices marked with a flow-rate capacity 100 [115]{.underline} L
> (25 [30]{.underline} gal) or more per minute shall have a \"special\"
> test performed at the slowest of the follow­ing rates:
>
> **(1) the minimum discharge rate marked on the device, or**
>
> **(2) the minimum discharge rate at which the device will deliver when
> equipped with an automatic dis­charge nozzle set at its slow­est setting
> [provided it is not less than the marked minimum flow
> rate]{.underline}.**

Alternate Recommendation: NIST Weights and Measures Division (NIST/WMD)
recommends modifying Handbook 44 Sec. 3.30 Paragraph N.4.2.2. Retail
Motor-Fuel as follows:

> **N.4.2.2. Retail Motor-Fuel Devices.**
>
> \(a\) Devices with[out]{.underline} a [marked minimum]{.underline}
> flow-rate capacity less than 100 L (25 gal) per minute shall have a
> \"special\" test performed at the slower of the follow­ing rates:
>
> **(1) 19 L (5 gal) per minute, or**
>
> **(2) ~~the minimum discharge rate marked on the device, or~~**
>
> **~~(3)~~ the minimum discharge rate at which the device will deliver
> when equipped with an automatic discharge nozzle set at its slowest
> setting.**
>
> \(b\) Devices marked with a [minimum]{.underline} flow-rate capacity
> 100 L (25 gal) or more per minute shall have a \"special\" test
> performed at [or near]{.underline} the [marked minimum flow
> rate.]{.underline} slowest of the follow­ing rates:
>
> **~~(1) the minimum discharge rate marked on the device, or~~**
>
> **~~(2) the minimum discharge rate at which the device will deliver
> when equipped with an automatic dis­charge nozzle set at its slow­est
> setting.~~**

**Discussion/Background:** At its October 2004 Meeting, the (NTETC)
Measuring Sector discussed a test scenario in which a RMFD with marked
flow rates of 60 gpm maximum and 12 gpm minimum, the actual flow rate on
the lowest setting of the automatic nozzle was 6 gpm. The laboratory
posed the following questions regarding this situation.

If a 10-gal test measure is used, what is the appropriate tolerance
applicable? Table T.2. in the LMD Code stipulates that the special test
tolerance is 0.5 %. This would equate to 11.55 cubic inches on a
ten-gallon test draft; however, there is a footnote that states that the
applicable acceptance tolerance when using a 10-gallon test draft is 5.5
cubic inches. Which tolerance should be applied during an NTEP
evaluation? If a prover with a capacity greater than 10 gallons is used,
would it provide a tolerance advantage over tests conducted with a
10-gallon test measure?

S.4.4.1. requires that RMFDs with a designed maximum flow rate of 30 GPM
or greater be marked with a minimum and maximum flow rate. RMFDs with a
designed maximum flow rare of less than 30 GPM are not required to have
a maximum and minimum flow rate mark, but such marking is not precluded.
N.4.2.2 (b) in the LMD Code states **"**Devices marked with a flow-rate
capacity of 100 L (25 gal) or more per minute, shall have a \"special\"
test performed at the slowest of the follow­ing rates: (1) the minimum
discharge rate marked on the device, or (2) the minimum discharge rate
at which the device will deliver when equipped with an automatic
dis­charge nozzle set at its slow­est setting." If a RMFD is marked with a
minimum flow rate is it appropriate to operate the device below the
marked minimum flow rate?

The Sector agreed that officials should not test below the minimum flow
rate marked on the device. The Sector also agreed that the flow rate of
25 gpm in N.4.2.2. should be changed to 30 gpm to agree with the marking
requirements in S.4.4.1. Discharge Rates. The Sector agreed to forward
the proposal shown above to the NCWM and Southern Weights and Measures
Association (SWMA) for consideration.

At its October 2004 Meeting the SWMA heard concerns with the proposed
changes to N.4.2.2. Retail Motor-Fuel Devices (a) (3) and (b) (2) and
recommended that officials not test at a flow rate less than the minimum
flow rate marked on a device. As presented there appears to be a
conflict with other requirements in N.4.2.2. The SWMA agreed that the
proposal should not be forwarded to the Committee.

Following the SWMA Meeting WMD developed the alternative recommendation
shown above to address the concerns of the SWMA with the original
Measuring Sector's proposal to modify N.4.2.2. The WMD recommends that
the Committee consider the alternate recommendation, which eliminates
any conflicting language from the paragraph.

Editor's note: G-UR.2.3. states "that equipment shall be operated only
in the manner that is indicated by instructions on the equipment
(minimum flow rate)." Some dispensers with a latch on the nozzle lever
which when set at its lowest setting may cause the dispenser to operate
below the marked minimum flow rate. The Conference may want to consider
a User Requirement in the LMD Code that does not allow a latch on the
nozzle to create this situation.

###### 331 VEHICLE-TANK METERS

####### 331-1 Recognition of Temperature Compensation

####### 

Editor's note: On Monday, January 24, 2005, (of the upcoming Interim
Meeting) beginning at 1:00 p.m., the L&R and S&T Committees will hold a
joint session to discuss a wide range of temperature compensation
issues.

**Source:** Carryover Item 331-1 (This item originated from the Western
Weights and Measures Association (WWMA) and first appeared on the
Committee's 2000 agenda.)

**Recommendation:** Modify Section 3.31. Vehicle-Tank Meters (VTM) Code
by adding the following new paragraphs to recognize temperature
compensation as follows:

> **[S.2.4. Automatic Temperature Compensation for Refined Petroleum
> Products.]{.underline}**
>
> **[S.2.4.1. Automatic Temperature Compensation for Refined Petroleum
> Products. - A device may be equipped with an automatic means for
> adjusting the indication and registration of the measured volume of
> product to the volume at 15 °C (60 °F), where not prohibited by State
> Law.]{.underline}**
>
> **[S.2.4.2. Provision for Deactivating. - On a device equipped with an
> automatic temperature-compensating mechanism that will indicate or
> record only in terms of liters (gallons) compensated to 15 °C (60 °F),
> provision shall be made for deactivating the automatic
> temperature-compensating mechanism so that the meter can indicate and
> record, if it is equipped to record, in terms of the uncompensated
> volume.]{.underline}**
>
> **[S.2.4.2.X. Gross and Net Indications - A device equipped with
> automatic temperature compensation shall indicate and record, if
> equipped to record, both the gross (uncompensated) and net
> (compensated) volume for testing purposes. If both values cannot be
> displayed or recorded for the same test draft, means shall be provided
> to select either the gross or net indication for each test
> draft.]{.underline}**
>
> **[S.2.4.3. Provision for Sealing Automatic Temperature-Compensating
> Systems. - Adequate provision shall be made for an approved means of
> security (e.g., data change audit trail) or physically applying
> security seals in such a manner that an automatic
> temperature‑compensating system cannot be disconnected and that no
> adjustment may be made to the system.]{.underline}**
>
> **[S.2.4.4. Temperature Determination with Automatic Temperature
> Compensation. - For test purposes, means shall be provided (e.g.,
> thermometer well) to determine the temperature of the liquid
> either:]{.underline}**
>
> **[(a) In the liquid chamber of the meter, or]{.underline}**
>
> **[(b) Immediately adjacent to the meter in the meter inlet or
> discharge line.]{.underline}**

**[(Added 2004)]{.underline}**

> **[S.5.6. Temperature Compensation for Refined Petroleum Products. -
> If a device is equipped with an automatic temperature compensator, the
> primary indicating elements, recording elements, and recording
> representation shall be clearly and conspicuously marked to show that
> the volume delivered has been adjusted to the volume at 15 °C (60
> °F).]{.underline}**
>
> **[(Added 2004)]{.underline}**
>
> **[N.4.1.3. Automatic Temperature-Compensating Systems for Refined
> Petroleum Products. - On devices equipped with automatic
> temperature-compensating systems, normal tests shall be
> conducted:]{.underline}**

(a) **[by comparing the compensated volume indicated or recorded to the
    actual delivered volume corrected to 15 °C (60 °F);
    and]{.underline}**

(b) **[with the temperature-compensating system deactivated, comparing
    the uncompensated volume indicated or recorded to the actual
    delivered volume.]{.underline}**

> **[The first test shall be performed with the automatic
> temperature-compensating system operating in the \"as found\"
> condition. On devices that indicate or record both the compensated and
> uncompensated volume for each delivery, the tests in (a) and (b) may
> be performed as a single test.]{.underline}**
>
> **[(Added 2004)]{.underline}**
>
> **[N.5. Temperature Correction for Refined Petroleum Products. -
> Corrections shall be made for any changes in volume resulting from the
> differences in liquid temperatures between the time of passage through
> the meter and time of volumetric determination in the prover. When
> adjustments are necessary, appropriate petroleum measurement tables
> should be used.]{.underline}**
>
> **[(Added 2004)]{.underline}**
>
> **T.2.1. [Automatic Temperature-Compensating Systems. - The difference
> between the meter error (expressed as a percentage) for results
> determined with and without the automatic temperature-compensating
> system activated shall not exceed:]{.underline}**
>
> **[(a) 0.4 %  for mechanical automatic temperature-compensating
> systems; and]{.underline}**
>
> **[(b) 0.2 %  for electronic automatic temperature-compensating
> systems.]{.underline}**
>
> **[The delivered quantities for each test shall be approximately the
> same size. The results of each test shall be within the applicable
> acceptance or maintenance tolerance.]{.underline}**
>
> **[(Added 2004)]{.underline}**
>
> **[UR.2.5. Temperature Compensation for Refined Petroleum
> Products.]{.underline}**
>
> **[UR.2.5.1. Automatic.]{.underline}**
>
> **[UR.2.5.1.1. When to be Used. - In a State that does not prohibit,
> by law or regulation, the sale of temperature-compensated product a
> device equipped with an operable automatic temperature compensator
> shall be connected, operable, and in use at all times. An electronic
> or mechanical automatic temperature-compensating system may not be
> removed, nor may a compensated device be replaced with an
> uncompensated device, without the written approval of the responsible
> weights and measures jurisdiction.]{.underline}**
>
> **[\[Note: This requirement does not specify the method of sale for
> product measured through a meter.\]]{.underline}**
>
> **[UR.2.5.1.2. Invoices. - An invoice based on a reading of a device
> that is equipped with an automatic temperature compensator shall show
> that the volume delivered has been adjusted to the volume at 15 °C (60
> °F).]{.underline}**

**[(Added 2004)]{.underline}**

**Discussion/Background:** When this item was originally submitted,
several officials reportedly were confused about the specific meter
applications that are covered by an NTEP Certificate of Conformance for
a meter that includes the temperature-compensation feature. The WWMA
acknowledged that there are jurisdictions that permit temperature
compensated deliveries in applications that are not addressed by NIST
Handbook 44. Some states do not allow the use of automatic temperature
compensation for the delivery of products using a VTM.

At the 2002 and 2003 NCWM Annual Meetings, this item did not pass or
fail and it was returned to the Committee for further consideration.

At the 2004 NCWM Interim Meeting, the Meter Manufacturers Association
(MMA) supported the proposal. One official said that the item should
remain an information item until the Method of Sale Regulation in
Handbook 130 requires the sale of petroleum products to utilize
temperature correction to the standard reference temperature of 60 ºF.
Another official stated that not having standards and test methods in
the VTM code of Handbook 44 creates a hardship for officials in
jurisdictions where temperature compensation is allowed: (e.g., utilized
on VTMs delivering petroleum products) and urged the NCWM to adopt that
proposal. The Committee agreed to present Item 331-1 for adoption at the
2004 NCWM Annual Meeting.

At the 2004 NCWM Annual Meeting, the Committee stated its position on
Item 331-1 as follows:

The Committee believed that the Specifications, Test Notes, Tolerances,
and User Requirements contained in the proposal are technically correct
and provide both weights and measures officials and the NTEP
laboratories with the proper criteria to use when evaluating a vehicle
tank meter (VTM) with temperature compensation capability. The addition
of this language in the VTM Code does not require, approve, nor solicit
any jurisdiction to either prohibit or accept the use of temperature
compensation in that jurisdiction. The Committee further stated that the
adoption of a nationally accepted method of sale for temperature
compensation by all jurisdictions will not be obtainable in the
foreseeable future and encouraged each jurisdiction to adopt by either
statute, rule, or regulation requirements that prohibit, permit, or
require temperature compensation in their jurisdiction.

The Committee agreed that there were a sufficient number of states that
needed the new requirements as an inspection tool to warrant adding the
proposal to NIST Handbook 44 at that time without waiting for method of
sale requirements to be added to NIST Handbook 130.

At the 2004 NCWM Annual Meeting, this item did not pass or fail and it
was returned to the Committee for further consideration.

At its September 2004 Meeting, the Central Weights and Measures
Association (CWMA) agreed with the Committee that nothing in this
proposal requires a jurisdiction to permit or prohibit the sale of
petroleum products that have been temperature compensated. The CWMA
recognized the technical merit of the proposal and feels that
requirements are needed in Handbook 44; however, the CWMA further agreed
that this is a "method of sale" issue and that the proposal should be
retained as an information item until an accompanying method of sale
requirement is added to Handbook 130.

At its September 2004 Meeting, the Western Weights and Measures
Association (WWMA) agreed with the Committee that nothing in this
proposal requires a jurisdiction to permit or prohibit the sale of
petroleum products that have been temperature compensated. The WWMA
continues its strong support of this proposal and recommends that this
item go forward for adoption by the NCWM.

At its October 2004 Meeting, the Northeastern Weights and Measures
Association (NEWMA) the members were informed that the L&R Committee has
requested that the Board of Directors fund a working group to determine
if requirements for temperature compensation should be added to Handbook
130 and, if so, what wholesale and retails areas should be covered.
Several participants believed a working group was unnecessary and that
working groups should not be created just because a subject is
controversial. These members felt there were other items where working
groups could better be used. NEWMA suggested removing the words
"recognition of" from the title of Item 331-1.

See L&R Item 232-1.

For additional background on this item see the NCWM 2000 through 2004
S&T Final Reports.

####### 331-2 S.1.4.1. Display of Unit Price

**Source:** National Type Evaluation Technical Committee (NTETC)
Measuring Sector

**Recommendation:** Modify Handbook 44 Section 3.31. Paragraph S.1.4.1.
Display of Unit Price as follows:

> **S.1.4.1. Display of Unit Price. - In a device of the computing type,
> means shall be provided for displaying ~~on the outside of the
> device~~, in a manner clear to the operator and an observer, the unit
> price at which the device is set to compute. [The unit price is not
> required to be displayed continuously.]{.underline}**

Discussion/Background: At the 2004 Sector Meeting, a manufacturer of
vehicle-tank meters (VTM) asked the Sector to provide input on the
intent of Handbook 44 Section 3.31. Paragraph S.1.4.1. Display of Unit
Price. The Sector was asked to determine whether or not the unit price
must be displayed continuously. The manufacturer referred to the final
report of the 1983 NCWM S&T Committee. In the discussion of S&T Agenda
Item 304-2 the Committee stated its view that it is appropriate for a
digital electronic indicating element associated with a VTM to utilize a
shared display, that is the same display area can be used to indicate
the volume delivered, the unit price, and the total price. The Sector
agreed that the intent of the S&T Committee was clear and further agreed
to forward the recommendation to add a clarification note to S.1.4.1. as
shown above to the NCWM and the Southern Weights and Measures
Association (SWMA) for consideration.

At its October 2004 Meeting, the SWMA agreed with the Measuring Sector's
interpretation of the intent of S.1.4.1. The SWMA agreed to forward the
recommendation shown above to the Committee as a voting item.

####### 331-3 S.2.4. Zero Set-Back Interlock, Vehicle-Tank Meters

**Source:** Carryover Item 331-3. (This item originated from the
Southern Weights and Measures Association (SWMA) and first appeared on
the Committee's 2002 agenda.)

**Recommendation:** Add a new paragraph S.2.4. to Handbook 44, Section
3.31. Vehicle-Tank Meters as follows:

> ***[S.2.4. Zero Set-Back Interlock, Vehicle-Tank Meters. -- A device
> shall be so constructed that after a delivery cycle has been
> completed, an automatic interlock system shall engage to prevent a
> subsequent delivery until the indicating and, if equipped, recording
> elements have been returned to their zero position.]{.underline}***
>
> ***[\[Nonretroactive as of January 1, 200X\]]{.underline}***

### NTETC Alternate Recommendation: The Measuring Sector recommends adding a new Paragraph S.2.4. Zero Set-Back Interlock, to H44 Sec. 3.31. Vehicle-Tank Meters as follows:

> ***[S.2.4. Zero-Set-Back Interlock, Vehicle-Tank Meters. -- Except for
> aircraft fueling, an electronic device shall be so constructed that
> after an individual or multiple deliveries at one location have been
> completed , an automatic interlock system shall engage to prevent a
> subsequent delivery until the indicating and, if equipped, recording
> elements have been returned to their zero position. For individual
> deliveries, if there is no product flow for 3 minutes the transaction
> must be completed before additional product flow is allowed. The 3
> minute timeout may be a sealable feature on an indicator designed for
> commercial and non-commercial applications.]{.underline}***
>
> ***[\[Nonretroactive as of January 1, 200X\]]{.underline}***

### SWMA Alternate Recommendation: The SWMA recommends adding a new Paragraph S.2.4. Zero Set-Back Interlock, to H44 Sec. 3.31. Vehicle-Tank Meters as follows:

> ***[S.2.4. Zero-Set-Back Interlock, Vehicle-Tank Meters. -- Except for
> aircraft fueling, an electronic device shall be so constructed that
> after an individual or multiple deliveries at one location have been
> completed , an automatic interlock system shall engage to prevent a
> subsequent delivery until the indicating and, if equipped, recording
> elements have been returned to their zero position. For individual
> deliveries, if there is no product flow for 3 minutes the transaction
> must be completed before additional product flow is allowed. The 3
> minute timeout shall be a sealable feature on an
> indicator.]{.underline}***
>
> ***[\[Nonretroactive as of January 1, 200X\]]{.underline}***

Editors Note: The NTETC recommendation allows the 3 minute timeout
feature to be sealable, but does not require it. The SWMA recommendation
requires the 3 minute timeout feature to be a sealable.

**Background/Discussion:** At its October 2003 Meeting, the SWMA
considered a proposal to add the specification requiring a zero set-back
interlock on vehicle-tank meters as shown above. The submitter explained
that a similar specification has been in place for retail motor-fuel
dispensers (RFMDs) for many years to prevent a second party from being
charged for product delivered to the first party. However, there is no
requirement for an interlock on vehicle-tank meters. Currently the only
protection is provided by two User Requirements paragraphs, UR.2.3.
Ticket in Printing Device, which prohibits the "riding of tickets" and
UR.2.1. Return of Indication Element to Zero, which requires the
indications to be set to zero before a delivery. Both of these
requirements are extremely difficult to enforce especially with the
newer technology where printers are frequently mounted inside the cab of
the vehicle. The SWMA agreed to forward the proposal to the Committee
for consideration as a nonretroactive requirement.

At the 2004 NCWM Interim Meeting, the Meter Manufacturers Association
(MMA) stated that there is a need to have the ability to make multiple
deliveries at a single location or to one buyer without having to remove
a delivery ticket. The MMA supported the concept of the proposal,
provided it is limited to devices with electronic indicators that have
the ability to print more than one delivery on a single delivery ticket.
The Committee agreed that 331-3 should remain an information item on the
Committee's Agenda to allow the NTETC Measuring Sector and other
interested parties time to further develop the proposal.

At the 2004 NCWM Annual Meeting, the MMA stated that a zero set-back
interlock is a desirable feature on a system with an electronic
indicator, but it is not practical to add the same feature to a system
with a mechanical indicator. The MMA agreed that the NTETC Measuring
Sector needed to submit a proposal for consideration. At their September
2004 Meetings, the Central and Western Weights and Measures Associations
agreed with the MMA.

At the October 2004 Measuring Sector Meeting the members developed an
alternative recommendation to add a new paragraph S.2.4. to Handbook 44,
Section 3.31. Vehicle-Tank Meters as shown above. The Sector agreed to
forward the proposal to the NCWM S&T and the SWMA Committees for
consideration.

At its October 2004 Meeting the SWMA reviewed the Measuring Sector's
alternative recommendation. The SWMA heard comments that the 3 minute
time out feature should be required to be a sealable feature and the
word "may" needs to be changed to "shall" in the last sentence of the
Sector's proposal. The SWMA agreed to forward its alternate
recommendation to the Committee as a voting item on the Committee's 2005
Agenda.

For additional background on this item see the NCWM 2000 through 2004
S&T Final Reports.

####### 331-4 N.4.2. Special Tests (Except Milk-Measuring Systems), N.4.5. Product Depletion Test, and T.4. Product Depletion Test

**Source:** Carryover Item 331-2. (This item originated from the
Northeastern Weights and Measures Association (NEWMA) and first appeared
on the Committee's 2003 agenda.)

**Recommendation:** Amend Section 3.31. as follows:

Amend paragraph N.4.2. Special Tests (Except Milk-Measuring Systems) as
follows:

> **N.4.2. Special Tests (Except Milk-Measuring 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.]{.underline}** 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 discharge rate marked on the device
> whichever is less~~;~~[.]{.underline}
>
> **~~(b) to develop operating characteristics of the measuring system~~
> ~~during a split-compartment delivery~~.**

Add new paragraphs N.4.5. Product Depletion Test and T.4. Product
Depletion Test as follows:

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
completely. 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.

> **[(Added 200X)]{.underline}**
>
> **[T.4. Product Depletion Test. - The difference in the delivered
> volumes for 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}.**
>
> **[(Added 200X)]{.underline}**

**NTETC Alternate Recommendation:** The National Type Evaluation
Technical Committee (NTETC) Measuring Sector recommends amending Section
3.31. as follows:

Amend paragraph N.4.2. Special Tests (Except Milk-Measuring Systems) as
follows:

> **N.4.2. Special Tests (Except Milk-Measuring 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 N4.1.
> **[or N.4.5.]{.underline}** shall be considered a special. Special
> tests 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 discharge rate marked on the device
> whichever is less~~;~~[.]{.underline}
>
> **~~(b) to develop operating characteristics of the measuring system
> during a split compartment delivery.~~**

Add new paragraphs N.4.5. Product Depletion Test and T.4. Product
Depletion Test as follows:

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 indication to stop
completely for at least 10 seconds. If the meter indication fails to
stop completely for at least 10 seconds, continue to operate the system
for 3 minutes. 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.

> **[(Added 200X)]{.underline}**
>
> **[T.4. Product Depletion Test. - The difference in the delivered
> volumes for the normal test and the product depletion test shall not
> exceed the tolerance shown in Table T.5.]{.underline}**

+---------------------------------+------------------------------------+
| **[Table T.4. Tolerances For    |                                    |
| Vehicle Tank                    |                                    |
| Meters]{.underline}**           |                                    |
|                                 |                                    |
| **[On Product Depletion Tests,  |                                    |
| Except Milk                     |                                    |
| Meters]{.underline}**           |                                    |
+---------------------------------+------------------------------------+
| **[Meter size]{.underline}**    | **[Maintenance and acceptance      |
|                                 | tolerances]{.underline}**          |
+---------------------------------+------------------------------------+
| **[Up to but not including 75   | **[2.25 liters ( 137 in^3^         |
| mm ( 3.0 inches                 | )^1^]{.underline}**                |
| )]{.underline}**                |                                    |
+---------------------------------+------------------------------------+
| **[75 mm ( 3.0 inches ) or      | **[3.75 liters ( 229 in^3^         |
| larger]{.underline}**           | )^2^]{.underline}**                |
+---------------------------------+------------------------------------+
| **[^1^ Based on a test volume   |                                    |
| of approximately 900 liters (   |                                    |
| 238 gal )]{.underline}**        |                                    |
|                                 |                                    |
| **[^2^Based on a test volume of |                                    |
| approximately 1500 liters ( 396 |                                    |
| gal )]{.underline}**            |                                    |
+---------------------------------+------------------------------------+

**[Example:"+25 cu in" error normal test, + or -- 137 cu in, for product
depletion total error; = + 162 cu in or\
-- 112 cu in.]{.underline}**

***[Note: The result of the product depletion test may fall outside of
the applicable test tolerance.]{.underline}***

**NewYork/WMD Alternate Recommendation:** New York Weights and Measures
and WMD recommend amending Section 3.31. as follows:

Amend paragraph N.4.2. Special Tests (Except Milk-Measuring Systems) as
follows:

> **N.4.2. Special Tests (Except Milk-Measuring 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 N4.4.1.
> **[or N.4.5.]{.underline}** shall be considered a special. Special
> tests 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 discharge rate marked on the device
> whichever is less;
>
> **~~(b) to develop operating characteristics of the measuring system
> during a split compartment delivery.~~**
>
> Add new paragraphs N.4.5. Product Depletion Test and T.4. Product
> Depletion Test as follows:

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 indication to stop
completely for at least 10 seconds. If the meter indication fails to
stop completely for at least 10 seconds, continue to operate the system
for 3 minutes. 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.

> **[(Added 200X)]{.underline}**
>
> **[T.4. Product Depletion Test. - The difference in the delivered
> volumes for the normal test and the product depletion test shall not
> exceed the tolerance shown in Table T.5.]{.underline}**

+---------------------------------+------------------------------------+
| **[Table T.4. Tolerances For    |                                    |
| Vehicle Tank                    |                                    |
| Meters]{.underline}**           |                                    |
|                                 |                                    |
| **[On Product Depletion Tests,  |                                    |
| Except Milk                     |                                    |
| Meters]{.underline}**           |                                    |
+---------------------------------+------------------------------------+
| **[Meter size]{.underline}**    | **[Maintenance and acceptance      |
|                                 | tolerances]{.underline}**          |
+---------------------------------+------------------------------------+
| **[Up to but not including 50   | **[1.70 liters ( 104 in^3^         |
| mm ( 2.0 inches                 | )^1^]{.underline}**                |
| )]{.underline}**                |                                    |
+---------------------------------+------------------------------------+
| **[From 2.0 up to but not       | **[2.25 liters ( 137 in^3^         |
| including 75 mm ( 3.0 inches    | )^1^]{.underline}**                |
| )]{.underline}**                |                                    |
+---------------------------------+------------------------------------+
| **[75 mm ( 3.0 inches ) or      | **[3.75 liters ( 229 in^3^         |
| larger]{.underline}**           | )^1^]{.underline}**                |
+---------------------------------+------------------------------------+
| **[^1^ Based on a test volume   |                                    |
| of at least on minutes flow in  |                                    |
| accordance with                 |                                    |
| N.3.]{.underline}**             |                                    |
+---------------------------------+------------------------------------+

**[Example:"+25 cu in" error normal test, + or -- 137 cu in, for product
depletion total error; = + 162 cu in or\
-- 112 cu in.]{.underline}**

***[Note: The result of the product depletion test may fall outside of
the applicable test tolerance.]{.underline}***

**Discussion:** The proposal intends to recognize that the measurement
of vapor when product is depleted during the vehicle-tank meter (VTM)
split compartment test (product depletion test) is a system problem and
the amount of vapor measured is not related to the size of the test
draft. The proposal also requires a split-compartment test (product
depletion test) for single compartment vehicles to verify the
performance of the air elimination mechanism. Currently paragraph
N.4.2.(b) refers only to a split-compartment delivery. The proposal is
based on the meters flow rate such that the applicable tolerance remains
constant regardless of the size of the test draft.

At its October 2003 NEWMA Meeting, New York expressed concern that the
product depletion test would not be considered a "special test" and that
tolerances based on the agreement between the normal tests and the
product depletion tests might result in accepting values outside the
"special test" tolerances. Therefore, NEWMA proposed that the exemption
in paragraph N.4.2. ("that the testing set forth in paragraph N.4.5.
shall not be considered a "special test") be removed. NEWMA also
submitted the following examples of product depletion test results to
show the need for a product depletion test tolerance that is not
dependent on prover size. The table assumes that error in the meter
under normal test conditions is relatively linear between a 100 gal and
a 200 gal test and that the actual amount of vapor passed for either.

<table>
<colgroup>
<col style="width: 11%" />
<col style="width: 11%" />
<col style="width: 11%" />
<col style="width: 11%" />
<col style="width: 0%" />
<col style="width: 8%" />
<col style="width: 6%" />
<col style="width: 3%" />
<col style="width: 0%" />
<col style="width: 0%" />
<col style="width: 2%" />
<col style="width: 0%" />
<col style="width: 6%" />
<col style="width: 6%" />
<col style="width: 1%" />
<col style="width: 8%" />
<col style="width: 6%" />
<col style="width: 1%" />
</colgroup>
<tbody>
<tr class="odd">
<td colspan="18"><h2
id="examples-product-depletion-test-proposed">Examples: Product
Depletion Test – Proposed</h2></td>
</tr>
<tr class="even">
<td colspan="5"><h4 id="meter-marked-100-gpm-max20-gpm-min">Meter
Marked: 100 gpm Max/20 gpm Min</h4></td>
<td colspan="7">Proposed</td>
<td colspan="2"><h1 id="section-1"></h1></td>
<td><h1 id="section-2"></h1></td>
<td colspan="2"></td>
<td></td>
</tr>
<tr class="odd">
<td>Tolerances:</td>
<td>Acceptance</td>
<td>Maintenance</td>
<td>Special Test</td>
<td colspan="8">Prod Depletion Agreement</td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
<td></td>
</tr>
<tr class="even">
<td>100 gal prover</td>
<td>0.15 gal</td>
<td>0.3 gal</td>
<td>0.45 gal</td>
<td colspan="8">0.5 gal</td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
<td></td>
</tr>
<tr class="odd">
<td>200 gal prover</td>
<td>0.30 gal</td>
<td>0.6 gal</td>
<td>0.90 gal</td>
<td colspan="8">0.5 gal</td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td></td>
<td colspan="4"></td>
<td colspan="2"></td>
<td colspan="2"></td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
<td></td>
</tr>
<tr class="odd">
<td colspan="14"><strong>Sample Test Results (Maintenance Tol.): Assume
linear error in normal tests and fixed passage of vapor</strong></td>
<td></td>
<td colspan="2"></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td>Expected</td>
<td></td>
<td>Expected</td>
<td colspan="2"></td>
<td colspan="3"></td>
<td colspan="2"></td>
<td colspan="3"></td>
<td></td>
<td colspan="3">Proposed</td>
</tr>
<tr class="odd">
<td>Error for Normal Test at 100 gal</td>
<td>Error for Normal Test at 200 gal</td>
<td>Error PD Test 100 gal</td>
<td>Error PD Test 200 gal</td>
<td colspan="2">PD Agreement</td>
<td colspan="5">Normal Test P/F</td>
<td colspan="4">Special Test P/F</td>
<td colspan="3">Prod Depletion Agreement P/F</td>
</tr>
<tr class="even">
<td>(gal)</td>
<td>(gal)</td>
<td>(gal)</td>
<td>(gal)</td>
<td colspan="2">gal</td>
<td>100 gal</td>
<td colspan="4">200 gal</td>
<td colspan="2">100 gal</td>
<td colspan="2">200 gal</td>
<td>100 gal</td>
<td colspan="2">200 gal</td>
</tr>
<tr class="odd">
<td>0.25</td>
<td>0.50</td>
<td>-0.25</td>
<td>1.00</td>
<td colspan="2">-0.50</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td>0.00</td>
<td>0.00</td>
<td>-0.50</td>
<td>0.50</td>
<td colspan="2">-0.50</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Pass*</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="odd">
<td>-0.25</td>
<td>-0.50</td>
<td>-0.75</td>
<td>0.00</td>
<td colspan="2">-0.50</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Fail</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td>0.25</td>
<td>0.50</td>
<td>-0.45</td>
<td>1.20</td>
<td colspan="2">-0.70</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass</td>
<td>Fail</td>
<td colspan="2">Fail</td>
</tr>
<tr class="odd">
<td>0.00</td>
<td>0.00</td>
<td>-0.70</td>
<td>0.70</td>
<td colspan="2">-0.70</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Pass*</td>
<td>Fail</td>
<td colspan="2">Fail</td>
</tr>
<tr class="even">
<td>-0.25</td>
<td>-0.50</td>
<td>-0.95</td>
<td>0.20</td>
<td colspan="2">-0.70</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Fail</td>
<td>Fail</td>
<td colspan="2">Fail</td>
</tr>
<tr class="odd">
<td>0.25</td>
<td>0.50</td>
<td>-0.10</td>
<td>0.85</td>
<td colspan="2">-0.35</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td>0.00</td>
<td>0.00</td>
<td>-0.35</td>
<td>0.35</td>
<td colspan="2">-0.35</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="odd">
<td>-0.25</td>
<td>-0.50</td>
<td>-0.60</td>
<td>-0.15</td>
<td colspan="2">-0.35</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Fail</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td></td>
<td colspan="2"></td>
<td></td>
<td colspan="4"></td>
<td colspan="2"></td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td colspan="13"><strong>Sample Test Results (Acceptance Tol.): Assume
linear error in normal tests and fixed passage of vapor</strong></td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td>Expected</td>
<td></td>
<td>Expected</td>
<td colspan="2"></td>
<td colspan="3"></td>
<td colspan="2"></td>
<td colspan="2"></td>
<td colspan="2"></td>
<td colspan="3">Proposed</td>
</tr>
<tr class="odd">
<td>Error for Normal Test at 100 gal</td>
<td>Error for Normal Test at 200 gal</td>
<td>Error PD Test 100 gal</td>
<td>Error PD Test 200 gal</td>
<td colspan="2">PD Agreement</td>
<td colspan="5">Normal Test P/F</td>
<td colspan="4">Special Test P/F</td>
<td colspan="3">Prod Depletion Agreement P/F</td>
</tr>
<tr class="even">
<td>(gal)</td>
<td>(gal)</td>
<td>(gal)</td>
<td>(gal)</td>
<td colspan="2">gal</td>
<td>100 gal</td>
<td colspan="4">200 gal</td>
<td colspan="2">100 gal</td>
<td colspan="2">200 gal</td>
<td>100 gal</td>
<td colspan="2">200 gal</td>
</tr>
<tr class="odd">
<td>0.12</td>
<td>0.24</td>
<td>-0.38</td>
<td>0.74</td>
<td colspan="2">-0.50</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td>0.00</td>
<td>0.00</td>
<td>-0.50</td>
<td>0.50</td>
<td colspan="2">-0.50</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Pass*</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="odd">
<td>-0.12</td>
<td>-0.24</td>
<td>-0.62</td>
<td>0.26</td>
<td colspan="2">-0.50</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Pass*</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td>0.12</td>
<td>0.24</td>
<td>-0.58</td>
<td>0.94</td>
<td colspan="2">-0.70</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass*</td>
<td>Fail</td>
<td colspan="2">Fail</td>
</tr>
<tr class="odd">
<td>0.00</td>
<td>0.00</td>
<td>-0.70</td>
<td>0.70</td>
<td colspan="2">-0.70</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Pass*</td>
<td>Fail</td>
<td colspan="2">Fail</td>
</tr>
<tr class="even">
<td>-0.12</td>
<td>-0.24</td>
<td>-0.82</td>
<td>0.46</td>
<td colspan="2">-0.70</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Pass*</td>
<td>Fail</td>
<td colspan="2">Fail</td>
</tr>
<tr class="odd">
<td>0.12</td>
<td>0.24</td>
<td>-0.23</td>
<td>0.59</td>
<td colspan="2">-0.35</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td>0.00</td>
<td>0.00</td>
<td>-0.35</td>
<td>0.35</td>
<td colspan="2">-0.35</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Pass</td>
<td colspan="2">Pass</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="odd">
<td>-0.12</td>
<td>-0.24</td>
<td>-0.47</td>
<td>0.11</td>
<td colspan="2">-0.35</td>
<td>Pass</td>
<td colspan="4">Pass</td>
<td colspan="2">Fail</td>
<td colspan="2">Pass*</td>
<td>Pass</td>
<td colspan="2">Pass</td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td></td>
<td colspan="2"></td>
<td></td>
<td colspan="4"></td>
<td colspan="2"></td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td colspan="11">* Provides different result from 100 gal test.</td>
<td colspan="2"></td>
<td colspan="2"></td>
<td></td>
<td colspan="2"></td>
</tr>
</tbody>
</table>

At the 2004 NCWM Interim Meeting, the Meter Manufacturers Association
(MMA) voiced support for the intent of the alternative proposal
submitted by the NTETC Measuring Sector, provided T.4. is modified by
removing the words "and all test results shall be within applicable
tolerances." One official noted that the proposal, if modified as the
MMA recommends, provides a substantial change in tolerance; however,
that State is in favor of the concept because the tolerance for a given
meter is not linked to the size of the prover used for testing. Another
Official stated that a product depletion test should be viewed as the
test of a "disturbance," similar to a test for radio frequency
interference (RFI) on a scale. That official prefers a tolerance
expressed as a flat percentage and suggested a tolerance of 0.5 % of the
meter's marked maximum flow rate over the step tolerances in the
proposed Table T.4. A representative from Measurement Canada indicated
that there is an opportunity for the United States and Canada to
harmonize the requirement for a product depletion test. Canada is
presently using 0.25 % of the meter's marked maximum flow rate; however,
Measurement Canada is still conducting a study to determine if the 0.25
% tolerance is appropriate. The Committee agreed that item 331-2 should
remain an information item and returned it to the NTETC Measuring Sector
for review and further development at its fall 2004 meeting.

At its October 2004 Meeting, the NTETC Measuring Sector reviewed an
alternate proposal for Table T.4. developed by Maryland Weights and
Measures and NIST/WMD based on the Measurement Canada tolerances for
product depletion tests. The Sector agreed with the alternate proposal,
provided an example of how the product depletion test would be applied
and a note stating that the results of the product depletion test could
fall outside of the applicable tolerance for the meter being tested were
added following Table T.4. as shown above. The Sector agreed to forward
the alternate proposal to the Southern Weights and Measures Association
(SWMA) and the Committee for consideration.

At the October 2004 NEWMA Meeting, New York proposed that an NCWM
working group be formed to research this item and supplied a discussion
paper in support of the proposal. NEWMA agreed to forward the
recommendation and the discussion paper to the Committee for
consideration.

At its October 2004 Meeting, the SWMA heard no opposition to the
proposal from the Measuring Sector. One official asked if a similar
requirement should be added to the Section 3.30. Liquid-Measuring
Devices for wholesale meters and to Section 3.32. LPG and Anhydrous
Ammonia Liquid-Measuring Devices. The SWMA agreed to forward the
proposal to the NCWM S&T Committee with the recommendation that it be a
voting item on the Committee's 2005 Agenda. The SWMA also recommended
that the Committee consider adding similar requirements to Sections
3.30. and 3.32. as appropriate.

Following the fall meetings of NEWMA, SWMA, and the NTETC Measuring
Sector, New York Weights and Measures worked with WMD to add an
additional category of meter sizes to the proposed Table T.4. from the
NTETC Measuring Sector as shown in the second alternate recommendation
above. That work was the result of a New York's concern that a large
number of vehicle-tank meters with meters of a size less than 2.0 inches
are still in use in that state. The tolerance for meters smaller than
2.0 in was developed based on the current tolerance for a draft of at
least one minute's flow for a typical meter of that size. However, the
tolerance is not directly related to draft size and remains the same
even if the draft size is increased.

For additional background on this item see the NCWM 2000 through 2004
Committee Final Reports.

###### 336 WATER METERS 

####### Table N.4.2. Flow Rate and Draft Size for Water Meters Special Tests

**Source:** Northeastern Weights and Measures Association (NEWMA)

**Recommendation:** Amend Table N.4.2. Flow Rate and Draft Size for
Water Meters Special Tests as follows:

+---------+---------+----------+--------+---------+---------+---------+
| **Table |         |          |        |         |         |         |
| N.4.2.  |         |          |        |         |         |         |
| Flow    |         |          |        |         |         |         |
| Rate    |         |          |        |         |         |         |
| and     |         |          |        |         |         |         |
| Draft   |         |          |        |         |         |         |
| Size    |         |          |        |         |         |         |
| for     |         |          |        |         |         |         |
| Water   |         |          |        |         |         |         |
| M       |         |          |        |         |         |         |
| eters** |         |          |        |         |         |         |
|         |         |          |        |         |         |         |
| **      |         |          |        |         |         |         |
| Special |         |          |        |         |         |         |
| Tests** |         |          |        |         |         |         |
+---------+---------+----------+--------+---------+---------+---------+
| **Meter | **Inter |          |        | **      |         |         |
| size**  | mediate |          |        | Minimum |         |         |
|         | Rate**  |          |        | Rate**  |         |         |
| **(in   |         |          |        |         |         |         |
| ches)** |         |          |        |         |         |         |
+---------+---------+----------+--------+---------+---------+---------+
|         | **Rate  | **Meter  |        | **Rate  | **Meter |         |
|         | of flow | indicat  |        | of      | i       |         |
|         | (gal    | ion/Test |        | flow**  | ndicati |         |
|         | /min)** | Draft**  |        |         | on/Test |         |
|         |         |          |        | **(gal  | Draft** |         |
|         |         |          |        | /min)** |         |         |
+---------+---------+----------+--------+---------+---------+---------+
|         |         | **gal**  | **f    |         | **gal** | **      |
|         |         |          | t^3^** |         |         | ft^3^** |
+---------+---------+----------+--------+---------+---------+---------+
| Less    | 2       | 10       | 1      | 1/4     | **~~    | 1       |
| than or |         |          |        |         | 5~~[10] |         |
| equal   |         |          |        |         | {.under |         |
| to 5/8  |         |          |        |         | line}** |         |
+---------+---------+----------+--------+---------+---------+---------+
| 3/4     | 3       | 10       | 1      | 1/2     | **~~    | 1       |
|         |         |          |        |         | 5~~[10] |         |
|         |         |          |        |         | {.under |         |
|         |         |          |        |         | line}** |         |
+---------+---------+----------+--------+---------+---------+---------+
| 1       | 4       | 10       | 1      | 3/4     | **~~    | 1       |
|         |         |          |        |         | 5~~[10] |         |
|         |         |          |        |         | {.under |         |
|         |         |          |        |         | line}** |         |
+---------+---------+----------+--------+---------+---------+---------+
| 1 1/2   | 8       | 50       | 5      | 1 1/2   | 10      | 1       |
+---------+---------+----------+--------+---------+---------+---------+
| 2       | 15      | 50       | 5      | 2       | 10      | 1       |
+---------+---------+----------+--------+---------+---------+---------+
| 3       | 20      | 50       | 5      | 4       | 10      | 1       |
+---------+---------+----------+--------+---------+---------+---------+
| 4       | 40      | 100      | 10     | 7       | **~~50  | 5       |
|         |         |          |        |         | ~~[100] |         |
|         |         |          |        |         | {.under |         |
|         |         |          |        |         | line}** |         |
+---------+---------+----------+--------+---------+---------+---------+
| 6       | 60      | 100      | 10     | 12      | **~~50  | 5       |
|         |         |          |        |         | ~~[100] |         |
|         |         |          |        |         | {.under |         |
|         |         |          |        |         | line}** |         |
+---------+---------+----------+--------+---------+---------+---------+
| (Table  |         |          |        |         |         |         |
| Added   |         |          |        |         |         |         |
| 2003)   |         |          |        |         |         |         |
| **[(    |         |          |        |         |         |         |
| Amended |         |          |        |         |         |         |
| 200X)]  |         |          |        |         |         |         |
| {.under |         |          |        |         |         |         |
| line}** |         |          |        |         |         |         |
+---------+---------+----------+--------+---------+---------+---------+

**Discussion/Background:** At the Fall 2004 NEWMA Meeting, a
manufacturer submitted the proposal shown above. The manufacturer stated
that a test draft of 5 gallons is not large enough to provide
repeatability for water meters sized 1 inch and smaller. The dial
indicator for these devices has 100 graduations of 1/10 gallon, which
means one complete revolution equals 10 gallons. The effect of parallax
on the reading and gear backlash both contribute to the lack of
repeatability of indication when using a 5-gallon test draft. The
manufacturer recommends that any test of the device include, at a
minimum, at least one complete revolution of the dial indicator. None of
the jurisdictions represented at the NEWMA Meeting routinely test water
meters; therefore, they could not provide any input on the technical
merits of the proposal. However, NEWMA agreed to forward the proposal to
the Committee for consideration.

###### 360 OTHER ITEMS

####### 360-1 Proposed Section 5.59. Electronic Livestock, Meat, and Poultry Evaluation Systems and/or Devices-Tentative Code

**Source:** Southern Weights and Measures Association (SWMA)

**Recommendation:** Add a Tentative Code 5.59. Livestock, Meat, and
Poultry Evaluation Systems and/or Devices as follows:

**[Sec. 5.59. Electronic Livestock, Meat, and Poultry Evaluation Systems
and/or Devices -- Tentative Code]{.underline}**

**[This tentative code has only a trial or experimental status and is
not intended to be enforced. The requirements are designed for study
prior to the development and adoption of a final Code for Livestock,
Meat, and Poultry Evaluation Systems and/or Devices. Officials wanting
to conduct an official examination of a device or system are advised to
see paragraph G-A.3. Special and Unclassified Equipment.]{.underline}**

**[A. Application]{.underline}**

**[A.1. - This code applies to electronic devices or systems for
measuring the composition or quality constituents of live animals,
livestock and poultry carcasses, and individual cuts of meat or a
combination thereof for the purpose of determining value.]{.underline}**

**[A.2. - See also Sec. 1.10; General Code requirements.]{.underline}**

**[A.3. - This code does not apply to scales used to weigh live animals,
livestock and poultry carcasses, and individual cuts of meat unless the
scales are part of an integrated system designed to measure composition
or quality constituents.]{.underline}**

**[S. Specifications]{.underline}**

**[S.1. Design and Manufacture - All design and manufacturing
specifications shall comply with ASTM Standard F 2342 Standard
Specification for Design and Construction of Composition or Quality
Constituent Measuring Devices or Systems.]{.underline}**

**[N. Notes]{.underline}**

**[N.1. Method of Test. -- Performance tests shall be conducted in
accordance with ASTM Standard F 2343 Test Method for Livestock, Meat,
and Poultry Evaluation Devices.]{.underline}**

**[N.2. Testing Standards. -- ASTM Standard F 2343 requires device or
system users to maintain accurate reference standards that meet the
tolerance expressed in Handbook 44 Fundamental Considerations, paragraph
3.2. (i.e., one third of the smallest tolerance applied) in accordance
with.]{.underline}**

N.3. Verification. -- Device or system users are required to verify and
document the accuracy of a device or system on each production day as
specified by ASTM Standard F 2341 Standard Practice of User Requirements
for Livestock, Meat, and Poultry Evaluation Devices or Systems.

> **[N.3.1. Official Tests. -- Officials are encouraged to periodically
> witness the required "in house" verification of accuracy. Officials
> may also conduct official tests using the on-site testing standards or
> other appropriate standards belonging to the jurisdiction with
> statutory authority over the device or system.]{.underline}**

**[T. Tolerances]{.underline}**

> **[T.1. Tolerances on Individual Measurements. - Maintenance and
> acceptance tolerances in excess and deficiency on an individual
> measurement shall be as shown in Table T.1.]{.underline}**

  ----------------------------------- -----------------------------------
  **[Table T.1.                       
  Tolerances]{.underline}**           

  **[Individual linear measurement of **[ 1 mm (0.039 in)]{.underline}**
  a single constituent]{.underline}** 

  **[Measurement of                   **[ 1.6 cm^2^ (0.25
  area]{.underline}**                 in^2^)]{.underline}**

  **[For measurements of other        **[As specified in ASTM Standard F
  constituents]{.underline}**         2343]{.underline}**
  ----------------------------------- -----------------------------------

**[User Requirements]{.underline}**

**[UR.1. Installation Requirements.]{.underline}**

> **[UR.1.1. Installation. -- All devices and systems shall be installed
> in accordance with manufacturer's instructions.]{.underline}**

**[UR.2. Maintenance of Equipment.]{.underline}**

> **[UR.2.1. Maintenance. -- All devices and systems shall be
> continually maintained in an accurate condition in accordance with
> manufacturer's instructions and ASTM Standard F 2341.]{.underline}**

**[UR.3. Use requirements.]{.underline}**

> **[UR.3.1. Limitation of Use. -- All devices and system shall be used
> to make measurements in a manner specified by the
> manufacture.]{.underline}**

**[UR.4. Testing Standards. -- The user of a commercial device shall
make available to the official with statutory authority over the device
testing standards that meet the tolerance expressed in Fundamental
Considerations, paragraph 3.2. (i.e., one third of the smallest
tolerance applied). The accuracy of the testing standards shall be
verified annually or on a frequency as required by the official with
statutory authority and shall be traceable to a national
standard.]{.underline}**

**Discussion:** In 2000 the Grain Inspection, Packers, and Stockyards
Administration (GIPSA) branch of the United States Department of
Agriculture (USDA) approached NIST and the NCWM to discuss the
development of standards for devices used to measure fat content in
animal carcasses. When it was determined that neither the NCWM nor NIST
had the resources needed to develop such a standard, the American
Society for Testing and Materials (ASTM) was contacted as a potential
standards-writing body to guide the task of developing the desired
standard. The ASTM agreed to develop standards known as ASTM Standard
F10 on Livestock, Meat, and Poultry Evaluation Systems for the
measurement of fat and other quality constituents in animal carcasses.
Some devices or systems will measure only a single constituent, which
will be used to determine the value of the carcasses or primal cuts.
Other systems may integrate the measurement of several constituents to
determine value.

The NCWM agreed that if USDA was able to develop standards for these
devices outside of the NCWM, the NCWM would consider adopting these
standards, as a tentative code in Handbook 44. The need for a tentative
code in Handbook 44 is to provide an enforcement tool for USDA and other
jurisdictions wanting to have a mechanism for conducting inspections and
approving or rejecting these devices. The ASTM Standards are voluntary
standards that only have the effect of law when they are adopted into
regulation by a jurisdiction with statutory authority over the devices.
Handbook 44 provides a method for that adoption.

At its October 2004 Meeting, the SWMA reviewed a draft tentative code
for livestock, meat, and poultry evaluation systems and devices prepared
by WMD. The SWMA agreed to forward the proposal to the Committee for
addition to Handbook 44 as a tentative code with the recommendation that
it be a voting item on the 2005 NCWM S&T Agenda.

####### 360-2 Appendix A Fundamental Considerations 3. Testing Apparatus; 3.1 Adequacy, 3.2 Tolerances for Standards and Footnote 2, and 3.3 Accuracy of Standards

**Source:** Western Weights and Measures Association (WWMA)

**Recommendation:** Amend Appendix A Fundamental Considerations
3.Testing Apparatus as follows:

Add amended Footnote 2 to paragraph 3.1 Adequacy as follows:

**3. Testing Apparatus**

> **3.1. Adequacy.^[2]{.underline}^ -** Tests can be made properly only
> if, among other things, adequate testing apparatus is available.
> Testing apparatus may be considered adequate only when it is properly
> designed for its intended use, when it is so constructed that it will
> retain its characteristics for a reasonable period under conditions of
> normal use, when it is available in denominations appropriate for a
> proper determination of the value or performance of the commercial
> equipment under test, and when it is accurately calibrated.
>
> **[^2^Recommendations regarding the specifications and tolerances for
> suitable field standards may be obtained from the Weights and Measures
> Division of]{.underline}** **~~The numerical values of the tolerances
> recommended by~~ the** National Institute of Standards and
> Technology~~,~~**[.]{.underline}** ~~for the
> s~~[S]{.underline}tandards will meet the specifications of **~~length,
> mass, and capacity used by weights and measures officials, may be
> obtained upon request from~~** the **~~Office of Weights and Measures
> of the~~** National Institute of Standards and Technology **[Handbook
> 105-Series standards (or other suitable and designated standards).
> This section shall not preclude the use of additional field standards
> and/or equipment, as approved by the Director, for uniform evaluation
> of device performance]{.underline}**.

Amend paragraphs 3.2 Tolerances for Standards and 3.3 Accuracy of
Standards as follows:

> **3.2. Tolerances for Standards.^~~2~~^ - ~~The error in a standard
> used by a weights and measures official should be known and corrected
> for when the standard is used; or if the standard is to be used
> without correction, its error should be not greater than one-third of
> the smallest tolerance to be applied when the standard is used. The
> reason for this is to keep at a minimum the proportion of the
> tolerance on the item tested that will be used up by the error of the
> standard. Expressed differently,~~** **[Except for work of relatively
> high precision, it is recommended that the accuracy of standards used
> in testing commercial weighing and measuring equipment be established
> and maintained so that the use of corrections is not necessary. When
> the standard is used without correction, its combined error and
> uncertainty must be less than one-third of the applicable device
> tolerance.]{.underline}**
>
> **[Device testing is complicated to some degree when corrections to
> standards are applied. When using the correction of the standard, the
> uncertainty associated with the corrected value must be less than
> one-third of the applicable device tolerance.]{.underline}**
> **~~t~~[T]{.underline}**he reason **[for this
> requirement]{.underline}** is to give the **~~item~~
> [device]{.underline}** being tested as nearly as practicable the full
> benefit of its own tolerance.
>
> **~~Field testing operations are complicated to some degree when
> corrections to standards are applied. Except for work of relatively
> high precision, it is recommended that the accuracy of standards used
> in testing commercial weighing and measuring equipment be so
> established and maintained that the use of corrections is not
> necessary. Also, whenever it can readily be done, it will be desirable
> to reduce the error on a standard below the one-third point previously
> mentioned.~~**
>
> **3.3. Accuracy of Standards. -** Prior to the official use of testing
> apparatus, its accuracy should invariably be verified.
> **[Field]{.underline}** **~~S~~[s]{.underline}**tandards should be
> **~~re-verified~~** **[calibrated]{.underline}** as often as
> circumstances require. By their nature, metal volumetric
> **[field]{.underline}** standards are more susceptible to damage in
> handling than are standards of some other types. A
> **[field]{.underline}** standard should be **~~re-~~**calibrated
> whenever damage is known or suspected to have occurred or significant
> repairs have been made. In addition, **[field]{.underline}**
> standards, particularly volumetric standards, should be
> **~~re-~~**calibrated with sufficient frequency to affirm their
> continued accuracy, so that the official may always be in an
> unassailable position with respect to the accuracy of his testing
> apparatus. Secondary **[field]{.underline}** standards, such as
> special fabric testing tapes, should be verified much more frequently
> than such basic standards as steel tapes or volumetric provers to
> demonstrate their constancy of value or performance.
>
> Accurate and dependable results cannot be obtained with faulty or
> inadequate **[field]{.underline}** standards. If either the service
> person or official is poorly equipped, their results cannot be
> expected to check consistently. Disagreements can be avoided and the
> servicing of commercial equipment can be expedited and improved if
> service persons and officials give equal attention to the adequacy and
> maintenance of their testing apparatus.

**Discussion:** In July 2000, the Metrology Subcommittee began
discussions on inconsistencies in laboratory calibration practices for
ensuring the traceability of field standards. The Subcommittee's work
resulted in proposals to modify NIST Handbook 44 (shown above) and
corresponding proposals for changes to requirements in NIST Handbook 130
"Uniform Laws and Regulations" to include guidelines for suitable
reference standards, test procedures, and practices for determining
whether to allow the use of field standards as test apparatus.

Both Handbooks require updating for consistency and to recognize current
accepted accreditation/recognition practices for field standards. The
Handbooks should be modified to internationally and nationally align
metrological terminology and adequately define or clarify terms already
in use that relate to field standard verification such as accreditation,
calibration, recognition, standards (field, primary, reference,
secondary, and working), traceability, uncertainty, and verification.
The proposal adds the term "field" to distinguish the type of physical
standard in use for testing of devices. The proposal also specifies the
appropriate documentary standards and specifies that the field
standard's uncertainty must be less than one-third of the applicable
device tolerance.

The Subcommittee recommends corresponding modifications to Handbook 130
(See L&R Agenda Item 221-1 and Item 234-1), which include an update in
metrological terminology. The Subcommittee developed Handbook 130
language which would allow calibration interval adjustments based on
statistical data, where permitted, to improve the accuracy of field
standards in use and for more cost-effective use of resources. The
Subcommittee further recommends that Handbook 130 reference the entire
105 Series as well as other suitable designated standards. To expedite
matters and recognize the latest technology, "Placed in Service Reports"
for registered service agencies may be forwarded electronically to the
State Director rather than mailed. Finally, to ensure measurements are
allowable, organizations issuing calibration reports must be recognized
by NIST WMD or approved by an accreditation body.

The WWMA recommends the proposal as a voting item.

The Central Weights and Measures Association (CWMA) believes that device
tolerances already allow for uncertainties, which field officials find
difficult to determine. The CWMA notes that use of the term "calibrated"
changes the intent of paragraph 3.3. Consequently, the CWMA withdrew the
proposal from its Interim Agenda.

The Northeastern Weights and Measures Association recommends the
proposal become a developing item, but did not provide a rationale for
taking this position.

####### 360-3 International Organization of Legal Metrology (OIML) Report 

The complete OIML Report is included as part of the NCWM OIML Board of
Director's 2005 Interim Agenda.

Many issues before the OIML, the Asian-Pacific Legal Metrology Forum
(APLMF), and other international groups are within the purview of the
S&T Committee. Additional information on OIML activities is available in
the Board of Directors Agenda, Appendix A and on the OIML web site at
<http://www.oiml.org/>.

For more information on specific device activities see the Weights and
Measures Division staff listed in the table below:

+------------+--------+---------------+-------------------+----------+
| ## NIST We |        |               |                   |          |
| ights and  |        |               |                   |          |
| Measures D |        |               |                   |          |
| ivision Co |        |               |                   |          |
| ntact List |        |               |                   |          |
+------------+--------+---------------+-------------------+----------+
| Staff      | Tel    | Email         | Device Type       | Postal   |
|            | ephone |               |                   | Mail or  |
|            |        |               |                   | Fax      |
+------------+--------+---------------+-------------------+----------+
| Steven     | 301-97 | <steven.c     | Automatic         | NIST WMD |
| Cook (LMD) | 5-4003 | ook@nist.gov> | Weighing Systems  |          |
|            |        |               |                   | 100      |
|            |        |               | Weighing Devices  | Bureau   |
|            |        |               |                   | Dr       |
|            |        |               |                   |          |
|            |        |               |                   | MS 2600  |
|            |        |               |                   |          |
|            |        |               |                   | Gaith    |
|            |        |               |                   | ersburg, |
|            |        |               |                   | MD       |
|            |        |               |                   |          |
|            |        |               |                   | 20       |
|            |        |               |                   | 899-2600 |
|            |        |               |                   |          |
|            |        |               |                   | Fax:     |
|            |        |               |                   |          |
|            |        |               |                   | 301-     |
|            |        |               |                   | 926-0647 |
+------------+--------+---------------+-------------------+----------+
| Richard    | 301-97 | richard.hars  | R 134 "Weighing   |          |
| Harshman   | 5-8107 | hman@nist.gov | Road Vehicles     |          |
| (LMD)      |        |               | In-Motion"        |          |
|            |        |               |                   |          |
|            |        |               | R 60 "Load Cells" |          |
+------------+--------+---------------+-------------------+----------+
| Diane Lee  | 301-97 | <diane.       | R 51 Grain        |          |
| McGowan    | 5-4405 | lee@nist.gov> | Moisture Meters   |          |
| (LMD)      |        |               |                   |          |
|            |        |               | Near Infrared     |          |
|            |        |               | Grain Analyzers   |          |
+------------+--------+---------------+-------------------+----------+
| Ralph      | 301-97 | <ralph.rich   | R 117 "Measuring  |          |
| Richter    | 5-4025 | ter@nist.gov> | Systems for       |          |
| (ILMG)     |        |               | Liquids Other     |          |
|            |        |               | Than Water"       |          |
|            |        |               |                   |          |
|            |        |               | R 105 "Direct     |          |
|            |        |               | Mass Flow         |          |
|            |        |               |                   |          |
|            |        |               | Measuring Systems |          |
|            |        |               | for Quantities of |          |
|            |        |               | Liquids" and Gas  |          |
|            |        |               | Meters            |          |
+------------+--------+---------------+-------------------+----------+
| Wayne      | 301-97 | <s.stie       | Measuring Devices |          |
| Stiefel    | 5-4011 | fel@nist.gov> |                   |          |
| (ILMG)     |        |               |                   |          |
+------------+--------+---------------+-------------------+----------+
| Dr. Ambler | 301-97 | <amb          | Electronic        |          |
| Thompson   | 5-2333 | ler@nist.gov> | Measuring Devices |          |
| (ILMG)     |        |               |                   |          |
+------------+--------+---------------+-------------------+----------+
| Juana      | 301-97 | <juana.willi  | R 21 Taximeters   |          |
| Williams   | 5-3989 | ams@nist.gov> |                   |          |
| (LMD)      |        |               |                   |          |
+------------+--------+---------------+-------------------+----------+
| LMD -      |        |               |                   |          |
| Legal      |        |               |                   |          |
| Metrology  |        |               |                   |          |
| Devices    |        |               |                   |          |
| Group      |        |               |                   |          |
|            |        |               |                   |          |
| ILMG -     |        |               |                   |          |
| Int        |        |               |                   |          |
| ernational |        |               |                   |          |
| Legal      |        |               |                   |          |
| Metrology  |        |               |                   |          |
| Group      |        |               |                   |          |
+------------+--------+---------------+-------------------+----------+

####### 360-4 Add International Terms that are Synonymous to NIST Handbook 44 Terms in Appendix D; Definitions 

**Source:** Carryover Item 360-4. (This item originated from the
Northeastern Weights and Measures Association (NEWMA) and first appeared
on the Committee's 2002 agenda.)

**Discussion:** Many Handbook 44 and OIML technical concepts and
procedures are in harmony, yet there are significant differences in the
terminology used. The harmonization of language is not necessary to
harmonize requirements, provided a state of equivalence exists; however,
improvements should be promoted where the language is confusing or has
the potential for misinterpretation. Currently, the U.S. National
Working Group (USNWG) on R 76 "Non-automatic Weighing Instruments" is
working on a proposal to amend NIST Handbook 44 Appendix D, Definitions
to include international terminology that is synonymous with Handbook 44
definitions. This item is intended to familiarize the public and private
sectors with the proposed approach to modify Appendix D. The USNWG will
identify Handbook 44 terms or definitions that are equivalent to
international vocabulary in a format that is similar to the example
shown below:

> **automatic zero-setting mechanism [(OIML R 76: zero-tracking
> device)]{.underline}.** Automatic means provided to maintain zero . .
> . operation. \[2.20\]
>
> **[(Amended 200X)]{.underline}**

The full development of this proposal to amend Appendix D will also
clarify terminology for international participants in the proposed
Mutual Acceptance Arrangement (MAA)(see Board of Directors Agenda,
Appendix A for more information), where it is imperative that all
affected parties are aware and understand each other's requirements. For
example, the Handbook 44 term "automatic zero setting" has an entirely
different meaning in R 76. Handbook 44 is also inconsistent in the use
of many terms such as "division," "increment," and "interval." The
addition of international terminology to existing Handbook 44 language
may also help to eliminate any confusion about the use of other
frequently used terms such as: device, element, mechanism, scale,
weigher, and balance.

NEWMA supports this item and views it as a first step toward educating
weights and measures officials. Future efforts should include work to
place terms in Handbook 44 text and ultimately having one mutually
acceptable set of terminology.

The Committee concurs with NEWMA's assessment that the proposal is a
necessary step in work to harmonize U.S. and international terminology
and later standards. The Committee decided to keep this proposal as an
information item on its agenda to update the weights and measures
community on this important work in the harmonization of standards and
to allow the work group sufficient time to complete its comparison of
Handbook 44 General Code and Scales Code terms with equivalent
international terminology.

At its 2004 meeting, the Western Weights and Measures Association
requested the Working Group continue to develop terms and the proposal
remain an Information Item.

The Central Weights and Measures Association (CWMA) believes
international terms serve no purpose for the field official. The CWMA
agreed this is an issue for NCWM Publication 14, "NTEP Technical Policy,
Checklists, and Test Procedures" therefore, the proposal should be
withdrawn from the S&T Agenda.

The Scale Manufacturers of Association supports the efforts of the USNWG
and looks forward to reviewing the final proposal as an information
item.

####### 360-5 Developing Issues

The NCWM established a mechanism to disseminate information about
emerging issues which have merit and are of national interest.
Developing issues have not received sufficient review by all parties
affected by the proposal or may be insufficiently developed to warrant
review by the NCWM S&T Committee. The developing issues listed below are
currently under review by at least one regional association or technical
committee.

The developing issues are listed in Appendix B according to the specific
NIST Handbook 44 Code Section under which they fall.

The S&T Committee encourages interested parties to examine the proposals
included in Appendix B and send their comments to the contact listed in
each item.

The Committee asks that the regional weights and measures associations
and National Type Evaluation Technical Committee Sectors continue their
work to fully develop each proposal. Should an association or Sector
decide to discontinue work on a developmental item, the Committee asks
that it be notified.

[]{#appendixa .anchor}**Appendix A**

**Item 360-5: Developing Issues**

**Part 1, General Code**

**Source:** Western Weights and Measures Association (WWMA)

**Recommendation:** Modify paragraph G-S.5.6.1. as follows:

> **G-S.5.6.1. ~~Recorded Representation of Metric Units on Equipment
> with Limited Character Sets~~ [Acceptable Abbreviations for Recorded
> and Indicated Representation of Units on Equipment]{.underline}. -**
> The appropriate defining symbols are shown in Table 1.

Add the following new abbreviations to Table 1 Representation of Units
to the General Code:

  --------------------------------- ----------------------- ---------------------------------- ----------------------- ----------------------- ------------------------------ ------------------------- ---------------------------------- ------------------------- -------------------------
  **[Name of Unit]{.underline}**    **[Common Use           **[Representation]{.underline}**                                                   **[Name of Unit]{.underline}** **[Common Use             **[Representation]{.underline}**                             
                                    Symbol]{.underline}**                                                                                                                     Symbol]{.underline}**                                                                  

                                                            **[Form I]{.underline}**           **[Form                                                                                                  **[Form I]{.underline}**           **[Form II]{.underline}** 
                                                                                               II]{.underline}**                                                                                                                                                     

                                                            **[(double case)]{.underline}**    **[(single lower        **[(single case                                                                  **[(double case)]{.underline}**    **[(single lower          **[(single case
                                                                                               case)]{.underline}**    upper)]{.underline}**                                                                                               case)]{.underline}**      upper)]{.underline}**

  **[Inches]{.underline}**          **[in]{.underline}**    **[In]{.underline}**               **[in]{.underline}**    **[IN]{.underline}**    **[deciliter]{.underline}**    **[dL]{.underline}**      **[dL]{.underline}**                                         

  **[Foot]{.underline}**            **[ft]{.underline}**    **[ft]{.underline}**               **[ft]{.underline}**    **[FT]{.underline}**    **[Kiloliter]{.underline}**    **[kL]{.underline}**      **[kL]{.underline}**                                         

  **[Yard]{.underline}**            **[yd]{.underline}**    **[yd]{.underline}**               **[yd]{.underline}**    **[YD]{.underline}**    **[cubic meter]{.underline}**  **[M^3^]{.underline}**    **[m^3^]{.underline}**             **[m^3^]{.underline}**    **[M^3^]{.underline}**

  **[milligram]{.underline}**       **[mg]{.underline}**    **[mg]{.underline}**               **[mg]{.underline}**                            **[cubic inches]{.underline}** **[in^3^]{.underline}**   **[in^3^]{.underline}**            **[in^3^]{.underline}**   **[IN^3^]{.underline}**

  **[megagram]{.underline}**        **[Mg]{.underline}**    **[Mg]{.underline}**                                                               **[cubic foot]{.underline}**   **[ft^3^]{.underline}**   **[ft^3^]{.underline}**            **[ft^3^]{.underline}**   **[FT^3^]{.underline}**

  **[Grain]{.underline}**           **[gr]{.underline}**    **[gr]{.underline}**               **[gr]{.underline}**                            **[cubic yard]{.underline}**   **[yd^3^]{.underline}**   **[yd^3^]{.underline}**            **[yd^3^]{.underline}**   **[YD^3^]{.underline}**

  **[Dram]{.underline}**            **[dr]{.underline}**    **[dr]{.underline}**               **[dr]{.underline}**                            **[Gills]{.underline}**        **[gi]{.underline}**      **[gi]{.underline}**               **[Gi]{.underline}**      **[GI]{.underline}**

  **[Ounce]{.underline}**           **[oz]{.underline}**    **[oz]{.underline}**               **[oz]{.underline}**    **[OZ]{.underline}**    **[Pint]{.underline}**         **[pt]{.underline}**      **[pt]{.underline}**               **[pt]{.underline}**      **[PT]{.underline}**

  **[Pound]{.underline}**           **[lb]{.underline}**    **[lb]{.underline}**               **[lb]{.underline}**    **[LB]{.underline}**    **[Quart]{.underline}**        **[qt]{.underline}**      **[qt]{.underline}**               **[qt]{.underline}**      **[QT]{.underline}**

  **[hundredweight]{.underline}**   **[cwt]{.underline}**   **[cwt]{.underline}**              **[cwt]{.underline}**   **[CWT]{.underline}**   **[Gallon]{.underline}**       **[gal]{.underline}**     **[gal]{.underline}**              **[gal]{.underline}**     **[GAL]{.underline}**

  **[pennyweight]{.underline}**     **[dwt]{.underline}**   **[dwt]{.underline}**              **[dwt]{.underline}**   **[DWT]{.underline}**   **[Ampere]{.underline}**       **[A, I]{.underline}**    **[A, I]{.underline}**                                       **[A, I]{.underline}**

  **[ounce troy]{.underline}**      **[oz t]{.underline}**  **[oz t]{.underline}**             **[oz t]{.underline}**  **[OZ T]{.underline}**  **[resistance]{.underline}**   **[ohms]{.underline}**    **[ohms]{.underline}**             **[ohms]{.underline}**    **[OHMS]{.underline}**

  **[milliliters]{.underline}**     **[mL]{.underline}**    **[mL]{.underline}**                                                                                                                                                                                     

  **[centiliter]{.underline}**      **[cL]{.underline}**    **[cL]{.underline}**                                                                                                                                                                                     
  --------------------------------- ----------------------- ---------------------------------- ----------------------- ----------------------- ------------------------------ ------------------------- ---------------------------------- ------------------------- -------------------------

**Discussion:** The WWMA notes that the current General Code Table 1
Representation of Units does not include many units that are in common
use today.

At its 2004 meeting, the WWMA indicated that unless it receives a report
on the development of the table, the proposal will be withdrawn from its
2005 agenda.

To provide input on this proposal contact Gary Castro, California
Division of Measurement Standards by telephone at 916-229-3018, by fax
at 916-229-3015, or by email at <gcastro@cdfa.ca.gov>.

**Part 2, Scales**

**Source:** Northeastern Weights and Measures Association (NEWMA)

**Recommendation:** Modify Table 4. Minimum Test Weights and Test Loads
as follows:

+---------------+--------------------+-------+------------------------+
| **Table 4.**  |                    |       |                        |
|               |                    |       |                        |
| **Minimum     |                    |       |                        |
| Test Weights  |                    |       |                        |
| and Test      |                    |       |                        |
| Loads^1^**    |                    |       |                        |
+---------------+--------------------+-------+------------------------+
| **Device      | **Minimums (in     |       | **(where               |
| capacity**    | terms of device    |       | practicable)**         |
|               | capacity)**        |       |                        |
+---------------+--------------------+-------+------------------------+
|               | **Test weights     | *     |                        |
|               | (greater of)**     | *Test |                        |
|               |                    | loads |                        |
|               |                    | ^2^** |                        |
+---------------+--------------------+-------+------------------------+
| 0 to 150 kg   | 100 %              |       |                        |
|               |                    |       |                        |
| (0 to 300 lb) |                    |       |                        |
+---------------+--------------------+-------+------------------------+
| 151 to        | 25 % or 150 kg     | 75 %  | Test weights to dial   |
| 1 500 kg      | (300 lb)           |       | face ca­paci­ty,         |
|               |                    |       | 1 000 d, or test load  |
| (301 to       |                    |       | to used ca­pacity, if   |
| 3 000 lb)     |                    |       | great­er than mini­mums  |
|               |                    |       | speci­fied              |
|               |                    |       |                        |
|               |                    |       | During initial         |
|               |                    |       | verification, a scale  |
|               |                    |       | should be tested to    |
|               |                    |       | capacity.              |
+---------------+--------------------+-------+------------------------+
| 1 501 to      | 12.5 % or 500 kg   | 50 %  |                        |
| 20 000 kg     | (1 000 lb)         |       |                        |
|               |                    |       |                        |
| (3 001 to     |                    |       |                        |
| 40 000 lb)    |                    |       |                        |
+---------------+--------------------+-------+------------------------+
| 2             | 12.5 % or 5 000 kg | 25    |                        |
| 0 001 kg~~+~~ | (10 000 lb)        | %^3^  |                        |
| **[to         |                    |       |                        |
| 250 000 kg]{  |                    |       |                        |
| .underline}** |                    |       |                        |
| (40 001       |                    |       |                        |
| lb~~+~~ **[to |                    |       |                        |
| 500 000 lb]{. |                    |       |                        |
| underline}**) |                    |       |                        |
+---------------+--------------------+-------+------------------------+
| ^1^ If the    |                    |       |                        |
| amount of     |                    |       |                        |
| test weight   |                    |       |                        |
| in Table 4    |                    |       |                        |
| combined with |                    |       |                        |
| the load on   |                    |       |                        |
| the scale     |                    |       |                        |
| would result  |                    |       |                        |
| in an unsafe  |                    |       |                        |
| condition,    |                    |       |                        |
| then the      |                    |       |                        |
| appropriate   |                    |       |                        |
| load will be  |                    |       |                        |
| determined by |                    |       |                        |
| the official  |                    |       |                        |
| with          |                    |       |                        |
| statutory     |                    |       |                        |
| authority.    |                    |       |                        |
|               |                    |       |                        |
| ^2^The term   |                    |       |                        |
| \"test load\" |                    |       |                        |
| means the sum |                    |       |                        |
| of the        |                    |       |                        |
| combination   |                    |       |                        |
| of field      |                    |       |                        |
| standard test |                    |       |                        |
| weights and   |                    |       |                        |
| any other     |                    |       |                        |
| applied load  |                    |       |                        |
| used in the   |                    |       |                        |
| conduct of a  |                    |       |                        |
| test using    |                    |       |                        |
| substitution  |                    |       |                        |
| test methods. |                    |       |                        |
| Not more than |                    |       |                        |
| three         |                    |       |                        |
| substitutions |                    |       |                        |
| shall be used |                    |       |                        |
| during        |                    |       |                        |
| substitution  |                    |       |                        |
| testing,      |                    |       |                        |
| after which   |                    |       |                        |
| the           |                    |       |                        |
| tolerances    |                    |       |                        |
| for strain    |                    |       |                        |
| load tests    |                    |       |                        |
| shall be      |                    |       |                        |
| applied to    |                    |       |                        |
| each set of   |                    |       |                        |
| test loads.   |                    |       |                        |
|               |                    |       |                        |
| ^3^ The scale |                    |       |                        |
| shall be      |                    |       |                        |
| tested from   |                    |       |                        |
| zero to at    |                    |       |                        |
| least 12.5 %  |                    |       |                        |
| of scale      |                    |       |                        |
| capacity      |                    |       |                        |
| using known   |                    |       |                        |
| test weights, |                    |       |                        |
| and then to   |                    |       |                        |
| at least 25 % |                    |       |                        |
| of scale      |                    |       |                        |
| capacity      |                    |       |                        |
| using either  |                    |       |                        |
| a             |                    |       |                        |
| substitution  |                    |       |                        |
| or strain     |                    |       |                        |
| load test     |                    |       |                        |
| that utilizes |                    |       |                        |
| known test    |                    |       |                        |
| weights of at |                    |       |                        |
| least 12.5 %  |                    |       |                        |
| of scale      |                    |       |                        |
| capacity.     |                    |       |                        |
| Whenever      |                    |       |                        |
| practical, a  |                    |       |                        |
| strain load   |                    |       |                        |
| test should   |                    |       |                        |
| be conducted  |                    |       |                        |
| to the used   |                    |       |                        |
| capacity of   |                    |       |                        |
| the scale.    |                    |       |                        |
| When a strain |                    |       |                        |
| load test is  |                    |       |                        |
| conducted,    |                    |       |                        |
| the           |                    |       |                        |
| tolerances    |                    |       |                        |
| apply only to |                    |       |                        |
| the test      |                    |       |                        |
| weights or    |                    |       |                        |
| substitution  |                    |       |                        |
| test loads.   |                    |       |                        |
|               |                    |       |                        |
| (Amended      |                    |       |                        |
| 1988, 1989,   |                    |       |                        |
| 1994, and     |                    |       |                        |
| 2003)         |                    |       |                        |
+---------------+--------------------+-------+------------------------+

**Discussion:** NEWMA submitted the proposal because jurisdictions
encounter scales with 1 000 000 lb nominal capacity and must determine
the minimum test load. NEWMA finds that NIST Handbook 44 is flexible,
but does not provide any definitive guidelines on test loads for large
capacity scales. NEWMA modified its original proposal by reducing the
scale maximum capacity from 1 000 000 lb to 500 000 lb and removing a
proposed new footnote that permitted officials to establish the minimum
test load. NEWMA supports the proposal as a voting item.

The Committee agreed that Table 4 is the appropriate place in Handbook
44 to provide some guidance on the appropriate minimum test load for
subsequent tests on scales that exceed capacities of 400 000 lb. The
Committee believes that the issue warrants a high priority, but requires
further review and input from both the public and private sectors.

The Western Weights and Measures Association (WWMA) agreed that the
proposal does not address the minimum load for scales with nominal
capacities greater than 500 000 lb. For example, a 500 000 lb capacity
scale could be tested with a test load less than that required to test a
400 000 lb scale. The WWMA recommends 62 500 lb minimum test weights and
a 125 000 lb minimum test load for scales with capacities greater than
500 000 lb.

The Central Weights and Measures Association (CWMA) questions why a
limit was set on the device's capacity since current Table 4 recognizes
device capacities greater than 40 000 lb. The CWMA recommends
withdrawing the proposal, based on the way the language is written.

The Scale Manufacturers Association (SMA) opposes this proposal and
recommends that it be withdrawn as a developing issue. The SMA, like the
CWMA, questions why a limit was set on the device's capacity since the
language in current Table 4 recognizes device capacities greater than
40,000 lb.

To provide input on this proposal contact Michael Sikula, New York
Bureau of Weights and Measures, by telephone at 518-457-3452, by email
at <mike.sikula@agmkt.state.ny.us>, or by fax at 518-457-2552.