NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D1 

Appendix D 

National Type Evaluation Technical Committee (NTETC)

Measuring Sector Annual Meeting Summary

October 9 - 10, 2013

Charleston, West Virginia

INTRODUCTION

The charge of the NTETC Measuring Sector (herein after referred to as “Sector”) is to provide appropriate type 

evaluation criteria based on specifications, tolerances and technical requirements of NIST Handbook 44, 

Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Sections 

1.10. General Code and all portions of Section 3 including codes for Liquid Measuring Devices, Vehicle Tanks 

Meters, Liquid Petroleum Gas and Anhydrous Ammonia Measuring Devices, Cryogenic Liquid Measuring Devices, 

Milk Meters, Water Meters, Mass Flow Meters, and Carbon Dioxide Liquid Measuring Devices. The Sector’s 

recommendations are presented to the National Type Evaluation Program (NTEP) Committee each January for 

approval and inclusion in NCWM Publication 14, Technical Policy, Checklists, and Test Procedures for national 

type evaluation.

The Sector is also called upon occasionally for technical expertise in addressing difficult NIST Handbook 44 issues 

on the agenda of National Conference on Weights and Measures (NCWM) Specifications and Tolerances (S&T) 

Committee. Sector membership includes industry, NTEP laboratory representatives, technical advisors, and the 

NTEP Administrator. Meetings are held annually, or as needed and are open to all NCWM members and other 

registered parties.

Proposed revisions to the handbook(s) are shown as follows: 1) deleted language is indicated with a bold face font 

using strikeouts (e.g., this report), 2) proposed new language is indicated with an underscored bold faced font

(e.g., new items), and 3) nonretroactive items are identified in italics. There are instances where the Sector will use 

red text and/or highlighted text to bring emphasis to text that requires additional attention. When used in this report, 

the term “weight” means “mass.” 

Note: It is policy to use metric units of measurement in publications; however, recommendations received by 

NCWM technical committees and regional weights and measures associations have been printed in this publication 

as submitted. Therefore, the report may contain references to inch-pound units.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D2 

Table A

Table of Contents

Title of Content Page NTEP D

CARRY-OVER ITEMS: ............................................................................................................................................ 4

1. Add Testing Criteria to NTEP Policy U “Evaluating Electronic Indicators Submitted 

Separate from a Measuring Element” ..................................................................................................... 4

NEW ITEMS: .............................................................................................................................................................. 6

2. Permanence of Markings, LMD Checklist .............................................................................................. 6

3. N.4.2.4. Wholesale Devices, 2013 NCWM S&T Committee Item 330-3 ................................................ 8

4. Corrections/Editorial for 2014 NCWM Publication 14........................................................................11

5. Product Families Table Addition - Dimethylether (DME)...................................................................15

ADDITIONAL ITEMS AS TIME ALLOWS: .......................................................................................................16

6. Appendix D – Definitions: Remote Configuration Capability, NCWM S&T 

Committee Item 360-7 .............................................................................................................................16

7. Identification of Certified Software .......................................................................................................19

8. Software Protection/Security ..................................................................................................................20

9. Software Maintenance and Reconfiguration.........................................................................................24

10. LNG Metering Applications ...................................................................................................................27

Appendices

Appendix A –– Checklist for Testing Electronic Digital Indicators with Simulated Inputs (Agenda Item 1) ..D / A1

Appendix B –– Permanence of Markings, LMD Checklist (Agenda Item 2).................................................... D / B1

Appendix C –– Excerpt from NCWM Specifications and Tolerances Committee 2013 Annual Report, 

Item 330-3 (Agenda Item 3) ..................................................................................................... D / C1

Appendix D –– Product Families Table, NTEP Technical Policy C – Units for Viscosity 

(Agenda Item 4a) .....................................................................................................................D / D1

Appendix E –– Permanence of Markings, LMD Checklist (Agenda Item 4b).................................................. D / E1

Appendix F –– Proposed Additions to the Additional Checklists and Test Procedures for Cash-Activated 

RMFDs (Agenda Item 4c) .........................................................................................................D / F1

Appendix G –– Proposed Changes to the ECR Interfaced with RMFDs Checklist (Agenda Item 4e) .............D / G1
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D3 

Table B

Glossary of Acronyms and Terms

CC Certificate of Conformance OIML International Organization of 

Legal Metrology

DMS Division of Measurement Standards OWM Office of Weights and Measures 

(NIST)

ECR Electronic Cash Register PD Positive Displacement

HB 44 NIST Handbook 44 “Specifications, Tolerances, 

and Other Technical Requirements for 

Weighing and Measuring Devices”

Pub 14 NCWM Publication 14

LMD Liquid Measuring Devices RMFD Retail Motor-Fuel Dispenser

mA milliamp SI International System of Units

NCWM National Conference on Weights and Measures S&T Specifications and Tolerances

NIST National Institute of Standards and Technology VTM Vehicle Tank Meter

NTEP National Type Evaluation Program W&M Weights and Measures

NTETC National Type Evaluation Technical Committee

This glossary is meant to assist the reader in the identification of acronyms used in this agenda and does 

not imply that these terms are used solely to identify these organizations or technical topics. 

Technical Advisor’s Note: I was unable to attend the Sector meeting due to a Federal Government shutdown. I 

want to extend thanks to Sector Chairman, Mr. Mike Keilty, and Sector Member, Mr. Paul Glowacki, for providing 

notes from the meeting and enabling me to prepare this summary.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D4 

Details of All Items

(In order by Reference Key)

CARRY-OVER ITEMS:

1. Add Testing Criteria to NTEP Policy U “Evaluating Electronic Indicators Submitted Separate from a 

Measuring Element” 

Source: 

California NTEP Lab

Background: At its 2007 meeting, the Measuring Sector heard that Technical Policy U in NCWM Publication 14 

allows for testing an indicator separate from a measuring element. However, specific test criteria had not been 

developed for this practice. The Sector heard a recommendation to develop and add specific criteria for testing an 

indicator separate from a measuring element. 

From 2007 to 2010, the California NTEP laboratory worked to develop a checklist, but had received limited input on 

the drafts. At the 2009 Sector meeting, Mr. Dan Reiswig provided an update to the Sector on progress to develop 

criteria for separate electronic indicators. He reported that the draft checklist provided to the Sector follows the 

general format of NCWM Publication 14 and the main test procedures are at the end of the document. At the 2010 

Sector meeting, Mr. Reiswig presented a list of the areas of the checklist that specifically needed further attention 

and review. Attachments 1 and 2 to the Sector’s 2010 Meeting Agenda submitted by Mr. Reiswig, contain the draft 

checklist and proposed revisions to Technical Policy T.

At its 2011 meeting, the Sector agreed that additional work is needed to finalize the checklist. Mr. Rich Miller 

(FMC) volunteered to serve as Chair of the Work Group and Sector Technical Advisor, Mr. Marc Buttler (NIST, 

OWM), will assist as needed, and monitor progress of work. Work Group members are listed below:

Electronic Indicators Checklist Work Group

Chair: Rich Miller, FMC

Members: Dmitri Karimov, Liquid Controls

Mike Keilty, Endress + Hauser

Review & Comment: Mike Frailer, MD W&M

Allen Katalinic, NC DMS

Technical Advisor: Marc Buttler, NIST, OWM

Established at the October 21 - 22, 2011, Measuring Sector Meeting

Technical Advisor’s Note, August 2013: Mr. Michael Frailer, Maryland Weights and 

Measures retired June 2013. Ms. Tina Butcher, NIST, OWM has replaced Mr. Marc Buttler, 

as NIST Technical Advisor.

The Work Group was asked to address the highlighted sections in the draft checklist from Mr. Reiswig 

(Attachment 1 to the Sector’s 2011 Meeting Agenda) along with the five points below and submit the finished 

checklist to the two lab representatives listed above for review and comment.

1) A minimum of 10 000 pulses must be collected. To ensure that there will be a change in the displayed 

indication for each pulse received, the electronic indication should be scaled such that the value of the 

smallest indicated division should equate to less than or equal to the value associated with one input pulse.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D5 

2) It is important to validate whether ± 1 pulse is an appropriate tolerance, taking into consideration applicable 

OIML requirements.

3) The number of different temperature inputs and API gravity values that would need to be tested to 

adequately verify the temperature compensation function of an electronic indicator must be determined. 

Spot checking of three random tables at three different temperatures would be adequate to verify an 

indicator’s temperature compensation feature is functioning properly.

4) The Work Group should add a step in the checklist for checking multipoint calibration along with 

associated guidance. This guidance should emphasize the necessity of working with the manufacturer of 

each device in order to set up tests to properly check multipoint calibration using simulated pulses.

5) Addressing various different input signal formats including pulses, analog, and digital communication will 

be challenging. Analog (4-20 mA) input devices are to be excluded from the scope at this time. The Work 

Group is asked to address pulse (frequency) signals in the final version of the checklist and is asked to 

consider whether or not to also include digital communications.

Also at that meeting, Mr. Miller reported that FMC had a new electronic indicator with frequency input (serial 

communication was not part of the scope) nearing release and anticipated submitting it for evaluation by the end of 

2012. He proposed using the evaluation, applying both the current standards and proposed checklist, to help refine 

the checklist and California volunteered to serve as the evaluating laboratory. The Sector agreed with this proposal. 

During that meeting, Mr. Jack Kiefert volunteered to join the Work Group. 

At the 2012 Sector meeting, FMC reported that, due to a heavy backlog, the California laboratory was not available 

to conduct an evaluation prior to the end of January 2013. However, plans are in place for the North Carolina

laboratory to conduct an evaluation sometime in December 2012. The Sector agreed to maintain the item on its 

agenda to allow this work to be completed.

In August 2013, Work Group Chairman, Mr. Rich Miller, informed the Technical Advisor that the North Carolina

laboratory conducted an evaluation on FMC’s new indicator. During the evaluation, Mr. Miller and the North 

Carolina laboratory evaluators reviewed the checklist and identified some suggested areas for revision.

Discussion: The Sector heard an update on the Work Group’s progress.

During the meeting, Mr. John Roach (California) recommended retaining Checklist Item 2.24 under Code Reference 

G-S.5.7., noting that this requirement is specified in NIST Handbook 44 and Mr. Jim Truex (NTEP Director) and 

Mr. Dmitri Karimov (Liquid Controls) agreed that the item should not be stricken. The Sector also discussed the 

merits of conducting permanence tests on electronics. The following additional general questions and comments 

were made regarding permanence tests, including suggestions that the permanence criteria section in the proposed 

checklist needs additional work:

• NCWM Publication 14 specifies a 20-day permanence test on electronics (e.g., digital indicators) specified 

in NCWM Publication 14. Additionally, NCWM Publication 14 specifies 20- and 30-day permanence tests 

specified for various types of Liquid-Measuring Devices.

• For indicators that will be used in vehicle-mounted installations, vehicle-mounted permanence tests are 

needed.

• There is a general feeling amongst Sector members present that permanence testing is not needed for 

electronics unless the electronics are used in a vehicle-mounted application.

• Software updates would not necessarily require a permanence test. Note that California uses a 20-day 

permanence test in their evaluations of new equipment. Canada requires a permanence test on initial 

evaluations, but not for updates to software.

• This document only addresses electronic indicators with frequency input and, thus, does not apply to 

indictors such as those for mass flow meters.

• The five points listed in Mr. Reiswig’s proposal may not adequately be covered in the checklist and should 

be reviewed.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D6 

• Will the test evaluate the form of pulse scaling? How will “edge counting” and “threshold levels” be 

addressed?

Mr. John Roach noted that he conducts two or three evaluations of electronic indicators per year and he requires 

permanence tests; however, he has not used the draft checklist. Sector members present noted that the work group 

primarily consisted of Mr. Rich Miller (FMC) and Mr. Allen Katalinic (North Carolina). The draft checklist was not 

distributed nor reviewed outside of the workgroup and Mr. Katalinic has additional comments on the most recent 

draft. The Sector Chairman proposed that the work group continue its work for another year, giving consideration to 

the Sector’s discussion and comments and bring the checklist back to the Sector at its next meeting.

Decision: The Sector concluded that additional work is needed on the checklist and agreed in a vote as follows to

carry this item over to its next meeting: 

Proposal: Carry this item over to the next Sector meeting and ask that the sub-group continue its work and consider 

the points raised in the Sector’s discussion of this item.

Yes: 8 

No: 0 

Result: Passed

The Sector proposed no changes to NCWM Publication 14. 

New Items:

2. Permanence of Markings, LMD Checklist

Source: 

NTEP Measuring Labs

Recommendation: 

Modify Section 1. General in the Liquid Measuring Devices Checklist as shown in Appendix B to this summary to 

include specific procedures for evaluating the permanence of marking. 

Background: 

At the spring 2013 NTEP Laboratory meeting, the measuring labs noted that the checklist for Digital Electronic 

Scales of NCWM Publication 14 provides detailed information about how to test the permanence of markings on the 

device. The labs propose replicating this language in the LMD checklist to add clarity for manufacturers and NTEP 

evaluators.

Discussion: 

Mr. Truex (NTEP Director) explained the proposed revisions and noted that these revisions are not new procedures; 

the NTEP laboratories have conducted the tests shown in Appendix B to this summary on weighing and other device

types for many years. The intent was not to impose more stringent requirements, but to ensure that the permanence 

criteria are uniformly applied; as such, the tests should be consistent regardless of the type of device. Without 

specific guidelines, the application of the permanence criteria is left to the judgment of individual evaluators and can 

lead to unintentional inconsistencies. Mr. Truex also noted that the language in proposed Sections 1.8 and 1.9 is 

new, but not controversial. Mr. John Roach (California) noted that these procedures are used for all tests in 

California and pointed out the need to ensure consistency among evaluations. Sector members asked about 

corresponding Canadian methods and Mr. Dennis Beattie (Measurement Canada) noted that Canada’s methods are 

similar and have been for some time.

Mr. Mike Keilty (Endress + Hauser) commented that the use of “wood of a pencil” seems excessive and suggested 

deleting the reference. Mr. Truex noted that this criterion is already part of NCWM Publication 14; the current 

proposal is not to modify current permanence test requirements, but such a proposal could be considered as part of a 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D7 

future proposal. Mr. Henry Oppermann (W&M Consulting) explained that the reference to the wood pencil was to 

prevent the use of a harsher material such as a knife or screwdriver blade.

Several Sector members expressed concern that the changes outlined in the Appendix B to this summary propose 

changes that address all aspects of permanence criteria for markings, not just the criteria for the permanence of 

lettering. For example, proposed changes include additions of criteria for the “Permanence of Attachment of 

Badge” and title heading for the “Location and Visibility of the Marking Information.” Mr. Rich Tucker (RL 

Tucker Consulting) also noted that requirements for permanence of the label are addressed in specific checklist 

sections and suggested that these requirements should be addressed only in the specific sections of the checklist to 

avoid possible conflicts. 

Sector members expressed concerns that the changes to the checklist format and content to mirror corresponding 

permanence criteria in the weighing checklists are too extensive. The Sector considered taking time during or 

immediately after the meeting to review the proposal and suggest alternate changes; however, there was a feeling 

that there was not sufficient time to do this. Consequently, the Sector agreed to limit its consideration of the 

proposed changes to only address permanence of lettering. 

• Decision: After considering proposed changes to include specific criteria for determining permanence of 

marking information, the Sector agreed to make only the following changes. The Sector did not accept any 

other changes recommended in the original proposal; the original proposal is included in Appendix B to 

this summary for reference. Under Section 1. General, Code Reference G-S.1. Identification, delete the 

second and third paragraphs that currently appear after the example for “Vehicle Tank Meters” as follows: 

Vehicle Tank Meters

• Serial number is required on the meter; it is a major component of the system since it is required 

for the system to operate.

• Serial number is required on the indicating elements.

Equipment must be marked on a surface that is an integral part of the device, and the marking must be 

visible after installation. If the required information is not positioned in a visible location after installation, 

a duplicate, permanent identification badge must be located in a visible location after installation. A 

removable cover is an acceptable location for the required information only if a permanent ID badge is 

located elsewhere on the device.

The information may be on a metal or plastic plate that is attached with pop rivets, adhesive, or 

other means, but removable bolts or screws are not permitted. A foil or vinyl badge may be used 

provided that it is able to survive wear and tear, remains legible, and is difficult to remove. The 

printing on a foil badge must be easily readable and not easily obliterated by rubbing with a 

relatively soft object (e.g., the wood of a pencil.)

Location of the information: 

• Add the following heading and text after the heading of “Required Markings” prior current checklist item 

1.1:

Required Markings:

Permanence of Marking Information:

“Permanent” markings address two aspects: (1) if the markings are on a plate or badge, then 

the marking badge must be “permanently” attached to the device, and (2) the printed 

information will withstand wear and cleaning. 

The identification marking must be permanent, able to survive normal wear and tear, and 

remain legible. If located on a metal or plastic plate or badge, it must be attached with pop 

rivets or adhesive, or equivalent permanent means; removable bolts or screws are not permitted. 

A foil badge is permitted provided that it is durable, is able to survive wear and tear, remains 

legible, is difficult to remove, and exhibits obvious evidence of an attempt to remove the marking 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D8 

or badge. The printing on a foil badge must be easily readable and not easily obliterated by 

rubbing with a relatively soft object (e.g., the wood of a pencil).

Location of the information: 

Permanence of Lettering:

The following test procedure shall be used to determine the permanence of the identification 

markings. The lettering for the markings is subjected to the following tests to simulated 

accelerated wear. The markings are then compared with a typical set of labels exhibiting various 

degrees of wear, graded from minimal effect (7) to excessive unacceptable wear (1).

Attempts are made to remove the marked information whether on a badge (plate) or on the 

device itself, using the following means.

• Rub over one letter of the marking at least 20 times using an ink eraser in the same manner 

and force as one would normally exert while erasing an inscription written with a ball point 

pen.

• Note: For consistency of application, all NTEP labs are to use Eberhard Faber ink eraser type 

#110 (no longer commercially available); the Papermate Black Pearl; or the Papermate Union 

110.

• Clean the marking or badge with the following cleaners presumed to be “readily available.” 

Marking information remains legible after following the above procedures using:

1.1 Disinfecting cleaning liquid and a damp cloth. Yes No N/A

1.2 “Soft” household cleaning powder and a damp cloth. Yes No N/A

1.3 Window cleaning fluids and a damp cloth. Yes No N/A

Note: For consistency of application, NTEP labs use “409,” Bon Ami, and Windex brands of products for 

tests in parts 1.1, 1.2, and 1.3 respectively.

All equipment shall be clearly and permanently marked on an exterior surface 

that is visible after installation with the following information (prefix lettering 

may be initial capitals, all capitals, or all lower case):

1.4 The name, initials, or trademark of the manufacturer or distributor. Yes No N/A

[Renumber subsequent paragraphs.]

3. N.4.2.4. Wholesale Devices, 2013 NCWM S&T Committee Item 330-3 

Source: 

NCWM S&T Committee

Recommendation: 

At the 2013 NCWM Annual Meeting, the S&T Committee requested assistance and input from the NTEP 

Measuring Sector on a proposal recommending changes to the requirements for special tests of wholesale meters. 

The Sector is asked to consider the proposals currently under consideration by the S&T Committee and to provide 

suggestions on how the Committee might best address the concerns expressed. Appendix C to this summary

includes an excerpt from the 2013 S&T Committee’s Annual Report with full details of the item. An abbreviated 

synopsis of the item is included below in the “Background” information.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D9 

Background: 

At the 2013 NCWM Interim and Annual Meetings, the S&T Committee considered a proposal under Item 330-3 on 

its agenda to modify the requirements for special tests of wholesale meters. The purpose of the proposal is to better 

align the special test requirements in NIST Handbook 44 with the current testing procedures, measuring practices, 

and technology changes while maintaining the integrity of the special test.

The “Item Under Consideration” as currently shown on S&T Committee’s agenda is as follows:

Amend paragraph N.4.2.4. as follows:

N.4.2.4. Wholesale Devices. – “Special” tests shall be made to develop the operating characteristics of a 

measuring system and any special associated or attached elements and accessories.

N.4.2.4.1. Special Test, Type Evaluation. – “Special” tests shall be made during type evaluation

include a test at the slower of the following rates:

(a) 20 % of the marked maximum discharge rate; or

(b) The minimum discharge rate marked on the device. 

Add a new paragraph N.4.2.4.2. as follows:

N.4.2.4.2. Special Test, Field Evaluation. – “Special” tests shall be made during field tests at or 

near the minimum discharge flow rate developed under the conditions of installation, but not 

less than the minimum discharge rate marked on the device. 

In its deliberations of this item, the S&T Committee heard from the submitter, Mr. Constantine Cotsoradis (Flint 

Hills Resources) who noted that the current language in NIST Handbook 44 is very restrictive. Even in systems 

where the flow can be reduced, it is difficult to set the flow and maintain it at the target flow rate over the course of 

an entire test.

During the 2013 NCWM Interim Meeting, the S&T Committee heard comments expressing concern that, without a 

test conducted near the minimum flow rate marked on the device, an official or device owner cannot adequately 

assess the condition of the meter and determine if the device is being properly maintained. The official also needs to 

be able to verify performance at other flow rates within the range of the meter. 

At the 2013 NCWM Annual Meeting, the Committee heard similar comments along with comments from NIST, 

OWM regarding the purpose of the special test. The Committee heard additional comments suggesting that details 

of testing might be better addressed in the NIST Examination Procedure Outlines. The Committee heard additional 

comments suggesting that details of testing might best be addressed in the NIST Examination Procedure Outlines. 

Mr. Karimov, speaking on behalf of the MMA, expressed concern about testing at flow rates which create pressures 

exceeding the rated pressure of the meter.

The Committee received the following alternate proposal from Mr. Randy Jennings (Tennessee) through the NCWM 

Online Comment Forum:

N.4.2.4.1. Special Test, Type Evaluation. – “Special” tests shall include a test at the slower of the 

following rates:

(a) Approximately 20 % of the marked maximum discharge rate; or

(b) The approximate minimum discharge rate marked on the device.

At the 2013 Annual Meeting, the Committee received the following alternate proposal from the submitter of the 

item; this proposal was also supported by Mr. Jennings. 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D10

N.4.2.4.2. Special Test, Field Evaluation. – A “Special” test shall be made during field tests at 

or near the minimum discharge flow rate developed under the conditions of installation, but not 

less than the minimum discharge rate marked on the device. Additional “Special” tests may be 

conducted at flow rates down to and including the maximum discharge rate marked on the 

device.

Given the wide range of questions and concerns raised about the most appropriate way to address this issue, 

Mr. Michael Keilty (Endress + Hauser), chairman of the NTEP Measuring Sector, recommended that the item be 

moved to an information status. He suggested asking the Sector to review this issue and provide suggestions to the 

Committee on how to best address special tests on wholesale devices. This suggestion was supported by several 

other NCWM members as well as the S&T Committee.

Discussion: 

Mr. Karimov , speaking on behalf of the MMA, summarized the item as presented by the submitter of the item. He 

noted that the design of many loading-rack metering systems is such that flow rate is automatically controlled; the 

user is not able to adjust the flow rate to the minimum flow rate marked on the meter. He also noted that the MMA 

has concerns that, if additional back pressure is created by artificially reducing the flow rate, system pressures may 

exceed the pressure ratings of the meter. Mr. Keilty noted that the Vehicle-Tank Meters Code and the LiquidMeasuring Devices Code both have “special test” tolerances which would apply to tests conducted at lower flow 

rates; the Mass Flow Meters Code does not have “special test” tolerances.

Mr. Dennis Beattie (Measurement Canada) commented that their officials require the owner to reprogram the system 

to deliver at lower flow rates so that performance can be verified at lower flow rates during official testing of the 

meter. Several commented that this might be difficult to do for smaller metering systems such as retail motor-fuel 

dispensers. The group also discussed how this requirement might apply to retail devices and how it would apply to 

wholesale devices.

The Sector also discussed the alternate proposal presented by Mr. Randy Jennings (Tennessee). Some members 

were concerned about the use of the word “maximum” and questioned whether or not this was intended to refer to a 

“miminum.” Concern was also expressed that the use of the word “approximate” could be problematic and may 

lead to inconsistent application.

Mr. Oppermann noted that weights and measures officials and service companies need to be able to conduct tests at 

lower flow rates as a means to assess the condition of the meter. This allows officials to ensure that the meter is 

being maintained properly and allows service personnel to assess how best to service equipment. Mr. Allen 

Katalinic (North Carolina) provided a specific example in which an operator was consistently operating the system 

at lower flow rates, emphasizing the need to test the system at lower flow rates.

Mr. Oppermann noted that the proposed language does not appear to require any test at lower flow rates and the 

group concurred with his interpretation. Given the importance of conducting tests over a range of flow rates, 

including tests at lower flow rates, Mr. Oppermann suggested the Sector advise the S&T Committee that the Sector 

does not support the proposal. This motion was seconded by Mr. Jerry Butler (North Carolina) and supported by the 

Sector.

Decision: 

The Sector considered the proposals presented to the S&T Committee under its 2013 Agenda Item 330-3 for 

modifying the requirements under LMD Code Paragraph N.4.2.4. Wholesale Devices that apply to “Special Tests.” 

The Sector recognized the need to conduct tests at lower flow rates as a means to verify performance of the meter 

across its flow range and ensure proper maintenance by the device owner. The Sector does not concur with the 

language in either proposal being considered by the S&T Committee and agreed to forward this position to the S&T 

Committee.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D11

4. Corrections/Editorial for 2014 NCWM Publication 14

Source:

NTEP Administrator

Background and Discussion: 

Several changes that were recommended by the 2013 Measuring Sector and approved by the NCWM NTEP 

Committee were not correctly implemented in the 2013 NCWM Publication 14. These proposed changes are 

outlined in the following subitems. During the Sector meeting, NTEP Director, Mr. Truex, noted that these items 

were recommended and approved by the NTEP Committee and the proposed agenda items are an accurate 

description of those changes. He also noted that Appendices D, E, F, and G did not get posted with the meeting 

agenda and he circulated a copy of the first day of the Sector meeting.

a. Product Families Table, NTEP Technical Policy C – Units Correction

Recommendation: 

Modify Technical Policy C. Product Categories and Families for Meters to correct the viscosity units for 

turbine meters as shown in Appendix D to this summary. 

Background: 

At its 2012 meeting, the Sector agreed to make changes correcting the unit labeling of all references to 

kinematic viscosity under the turbine meter columns of the Product Families Table in Technical Policy C 

to centistokes (cSt). Several changes that were recommended by the 2013 Measuring Sector and 

approved by the NCWM NTEP Committee were not correctly implemented in the 2013 NCWM 

Publication 14. This item is included to correct these inadvertent omissions.

Discussion/Decision: 

The Sector reviewed the proposed changes in Appendix D and accepted the changes by consensus 

without additional comments.

b. LMD Checklist References for Card Activated Retail Motor-Fuel Dispensers

Recommendation: 

Consolidate references to “credit- or debit-card activated” retail motor-fuel dispensers in the “Checklist 

and Test Procedures for Retail Motor-Fuel Dispensers” and correct references to printed receipt 

requirements to reflect NIST Handbook 44 language by making the following modifications: 

• Delete Sections 7.18 through 7.21 and move this text (with some minor modifications to reflect 

current NIST Handbook 44 language) to “LMD – Additional Checklists and Test Procedures for 

Card-Activated Retail Motor-Fuel Dispensers” Section 40. Card-Activated Retail Motor-Fuel 

Dispensers.

o Move the preamble to Sections 7.18 through 7.21. to the beginning of the “NTEP LMD 

Additional Checklists and Test Procedures for Card-Activated Retail Motor-Fuel Dispensers.”

o Create a new “Code Reference G-S.5.1. Indicating and Recording Elements” under “NTEP 

LMD Additional Checklists and Test Procedures for Card-Activated Retail Motor-Fuel 

Dispensers,” and move the text currently in Sections 7.20 and 7.21 to this new code reference.

o Create a new Code Reference heading for LMD Code paragraphs S.1.6.7. Recorded 

Representation and S.1.6.8. Recorded Representations for Transactions Where a PostDelivery Discount(s) is Provided and insert text from 7.18 through 7.19., modified to reflect 

current NIST Handbook 44 language in this new reference.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D12

• Delete Section 15. Card Activated Retail Motor-Fuel Dispensers, which is redundant to “LMD – 

Additional Checklists and Test Procedures for Card-Activated Retail Motor-Fuel Dispensers” 

Section 40.1 through 40.4. 

• Delete Section 16. Test Methods for Card-Activated Retail Motor-Fuel Dispensers, which is 

redundant to“LMD – Additional Checklists and Test Procedures for Card-Activated Retail MotorFuel Dispensers” Section 41. Test Methods. 

Attachment E to the Sector’s agenda outlined specific proposed changes to the checklist.

Discussion: 

The Sector reviewed proposed changes in Attachment E to the Sector’s agenda. The Sector discussed 

changes in checklist item Section 40 in detail.

Decision: 

The Sector concurred with the proposed changes in the document, with the exception to the proposed 

checklist item 40.8; the Sector also noted duplication in the paragraph numbering with two items being 

numbered 40.8. The Sector was concerned with inclusion of the “Yes,” “No,” and “N/A” checkboxes. 

The Sector agreed to strike the first item numbered “40.8;” however, the Sector agreed to retain the text

in that item asking for a designation of the option(s) available for providing a receipt and incorporate that 

text into the previous Checklist item 40.7.

Appendix E to this meeting summary shows the final version of the proposed changes, including the 

revisions described above in section 40 that were adopted by the Sector.

c. LMD Checklist – Checklist and Test Procedures for Cash-Activated RMFDs

Recommendation: 

Add the following new section at the end of Publication 14 LMD Checklist, Checklist and Test 

Procedures for Cash-Activated RMFDs to include references to receipt requirements for LMD Code 

paragraph S.1.6.7. as shown in Attachment F to the Sector’s meeting agenda. 

Background: 

In reviewing the references to printed receipt requirements in the LMD and associated checklists, the 

technical advisor noted that there are no references to the requirements for printed receipts in the section 

of the Checklist addressing Cash-Activated Dispensers. The proposed changes will make this section 

consistent with the sections on card-activated RMFDs and for ECRs interfaced with RMFDs.

Discussion: 

The Sector reviewed proposed changes in Attachment F to the Sector’s agenda. The Sector discussed 

changes in checklist item Section 17 in detail.

Decision: 

The Sector concurred with all changes except for the proposed Checklist item 17.11 which asked for a 

designation of the type(s) of receipts provided, similar to the item described in agenda item (c) above. 

The Sector was concerned with inclusion of the “Yes,” “No,” and “N/A” checkboxes. The Sector agreed 

to retain the text asking for a designation of the option(s) available for providing a receipt by moving this 

text to item 17.10. The Sector agreed to strike the remainder of item 17.11 and renumber subsequent 

checklist items.

Appendix F to this meeting summary shows the final version of the proposed changes adopted by the 

Sector, including the revisions to Section 17 described above.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D13

d. LMD Checklist – Post-Delivery Discounts – Formatting Change

Recommendation: 

Modify Publication 14 LMD Checklist Code Reference S.1.6.8. as follows to create separate checklist 

items for each piece of information required on the receipt and to include specific checklist line items for 

systems that are capable of providing electronic receipts.

Code Reference: S.1.6.8. Recorded Representations for Transactions Where a Post-Delivery 

Discount(s) is Provided

7.44. Except for fleet sales and other price contract sales, wWhere a 

post-delivery discount(s) is(are) applied, the sales receipt must 

provide:

the total quantity, unit price, and total computed price that 

were displayed on the dispenser at the end of the delivery 

prior to any post-delivery discount(s);an itemization of the 

post-delivery discounts to the unit price; and the final total 

price of each fuel sale after all post-delivery discounts are 

applied

Yes No N/A

7.44.1. the product identity by name, symbol, abbreviation, or 

code number;

7.44.12. the total quantity, unit price, and total computed price 

that were displayed on the dispenser at the end of the 

delivery prior to any post-delivery discount(s);

Yes No N/A

7.44.23. an itemization of the post-delivery discounts to the unit 

price; and

Yes No N/A

7.44.34. the final total price of each fuel sale after all postdelivery discounts are applied.Yes No N/A

7.44.5. For systems that are capable of generating electronic 

receipts, the customer must be given the alternative 

option of receiving a hard copy receipt in lieu of or in 

addition to the electronic receipt.

Indicate the option(s) available:

 Hard-copy or Electronic

 Hard-copy and Electronic

Yes No N/A

Background: 

The proposed change would assist NTEP laboratories in identify specific areas to be evaluated as part of 

reviewing the requirements for a receipt specified in NIST Handbook 44 LMD Code paragraph S.1.6.8. 

These changes also make this checklist item consistent with LMD Checklist item 7.19.2.

Discussion: 

The Sector reviewed the recommendation above and concurred with all but Section 7.44.5., which asked 

for a designation of the type(s) of receipts provided, similar to the item described in agenda items (b) and 

(c) above. The Sector was concerned with inclusion of the “Yes,” “No,” and “N/A” checkboxes. The 

Sector agreed to retain the text asking for a designation of the option(s) available for providing a receipt 

by moving this text to immediately follow item 7.44.4. The Sector agreed to strike the remainder of 

Item 7.44.5.

Decision: 

The Sector agreed to recommend the following changes for inclusion in NCWM Publication 14:
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D14

Code Reference: S.1.6.8. Recorded Representations for Transactions Where a Post-Delivery 

Discount(s) is Provided

7.44. Except for fleet sales and other price contract sales, wWhere a 

post-delivery discount(s) is(are) applied, the sales receipt must 

provide:

the total quantity, unit price, and total computed price that 

were displayed on the dispenser at the end of the delivery 

prior to any post-delivery discount(s); an itemization of the 

post-delivery discounts to the unit price; and the final total 

price of each fuel sale after all post-delivery discounts are 

applied

Yes No N/A

7.44.1. the product identity by name, symbol, abbreviation, or 

code number; 

7.44.12. the total quantity, unit price, and total computed price 

that were displayed on the dispenser at the end of the 

delivery prior to any post-delivery discount(s);

Yes No N/A

7.44.23. an itemization of the post-delivery discounts to the unit 

price; and

Yes No N/A

7.44.34. the final total price of each fuel sale after all postdelivery discounts are applied.Yes No N/A

Indicate the option(s) available for providing a receipt: 

 Hard Copy or Electronic

 Hard Copy and Electronic

e. ECRs Interfaced with RMFDs Checklist, Section 3. Recorded Representations

Recommendation: 

Modify the ECRs Interfaced with RMFDs checklist to:

• Make changes to the preamble and other text to be consistent with corresponding 

requirements for card- and cash-activated RMFDs;

• Add specific references to receipt requirements specified by LMD Code paragraph S.1.6.7, 

including the option of an electronic receipt;

• Create individual numbered checklist items for each of the three sub-bullets under the 

requirements for post-delivery discount receipts as specified in LMD Code paragraph 

S.1.6.8.; and

• Reorganize the order of items by moving the references to paragraph S.1.6.8. to follow those 

for S.1.6.7.

Specific proposed changes are outlined in Attachment G. 

Background: 

The proposed changes are to ensure consistency with corresponding changes in corresponding sections of 

the LMD checklist for RMFDs.

Discussion: 

The Sector reviewed proposed changes in Attachment G to the Sector’s agenda. The Sector discussed 

changes in Checklist item Section 3.2 in detail.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D15

Decision: 

The Sector concurred with all changes except for the proposed Checklist item 3.2, which asked for a 

designation of the type(s) of receipts provided, similar to the item described in agenda items (b), (c), and 

(d) above. The Sector was concerned with inclusion of the “Yes,” “No,” and “N/A” checkboxes. The 

Sector agreed to retain the text asking for a designation of the option(s) available for providing a receipt 

by moving this text to item 3.1. The Sector agreed to strike the remainder of item 3.2 and renumber 

subsequent checklist items.

Appendix G to this meeting summary shows the final version of the proposed changes adopted by the 

Sector, including the revisions to section 3 described above.

5. Product Families Table Addition - Dimethylether (DME) 

Source: 

Mr. John Roach (California NTEP Laboratory)

Background: 

NTEP has received requests to evaluate metering systems for Dimethylether (DME), which is not currently 

referenced in the Product Families Table of NCWM Publication 14. The California NTEP laboratory reports the 

following regarding this product:

• DME seems to have similar characteristics of propane. 

• CA has one client that has an LPG (propane) RMFD which is approved for several different PD meters. 

PD meters are viscosity sensitive in cP centipoise.

• NCWM Publication 14 states that Propane is 0.098 cP at 60 °F. 

• DME is not currently referenced in the Pub 14 and it should be added. 

• This product may be very popular.

• CA DMS chemists note that DME is being used in other counties for fuel and cooking. You can fill a 

propane container just like propane with DME.

• The submitting manufacturer provided the following data regarding DME along with relative values for 

Commercial Propane:

o Liquid specific gravity at 60 ° = 0.66 Propane = 0.510

o Vapor specific gravity at 60 °F = 1.59 Propane = 1.5

o Centipose viscosity at 60 °F = 0.15 Propane = 0.11

Because this is the first NTEP evaluation of this product and this will set a precedent for how to address this product 

with regard to any resulting Certificate and its associated coverage, the California NTEP laboratory wants to ensure 

that adequate testing is conducted. The California Laboratory has informed the applicant that testing will need to be 

conducted with DME as well as LPG product unless the Measuring Sector and NTEP Committee determine 

otherwise. However, the question has been posed of whether or not the testing with both products is necessary.

Recommendation: 

The California NTEP laboratory has asked that the Measuring Sector review the properties of this product; 

determine where it best fits within the Product Families Table of NCWM Publication 14; identify required testing 

parameters; and provide any additional guidelines for evaluating laboratories and manufacturers regarding the NTEP 

evaluation of meters used in this application.

Discussion: 

Mr. John Roach (California) introduced the item and summarized the intent of the recommendation, noting that he is 

attempting to get clarification on the criteria based upon questions raised by a dispenser manufacturer. Mr. Jim 

Truex (NTEP Director) noted that the NTEP laboratories are not comfortable with adding DME to the “compressed 

gases” category since this would allow the product to be included on a Certificate that covers this category without 

testing the meter with DME. Mr. Dennis Beattie (Measurement Canada) noted that compatibility of materials is a 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D16

concern and Mr. Mike Keilty (Endress + Hauser) and Mr. Dmitri Karimov (Liquid Controls) gave examples of 

materials that are and are not compatible with DME.

Mr. Roach asked the Sector to consider whether a test is needed on a meter delivering DME in addition to testing 

with another product(s) in the compressed gases category. He also asked whether testing could be run on the same 

meter with a different meter factor. He noted that he believes a permanence test should be conducted.

Though acknowledging that the chemical properties of DME appear similar to propane, Sector members present did 

not have in-depth experience with DME nor specific data to illustrate similarity of meter performance with the two 

products.

Mr. Henry Oppermann (Weights & Measures Consulting) noted that there are three facets of this issue that need to 

be addressed and the Sector agreed with this analysis of the issues to be addressed: 

(1) Conducting type evaluation on a dispenser metering DME to gain a type approval for DME only. 

(2) Conducting tests on a dispenser using DME and then using propane to obtain type approval on both 

products. Submitting this data to the Measuring Sector in an effort to possibly obtain broader coverage 

of different types of meters by getting a change to the product families criteria.

(3) Considering the need to re-open the discussion to further define the product families criteria by 

identifying the important product characteristics that defines the product category for each meter type.

The material compatibility of the meters should not be a W&M issue; the manufacturer must ensure that 

the materials are appropriate for each product measured by the meter.

Decision: 

The Sector considered whether or not DME can be added to a Certificate that has been issued to a meter based on 

testing conducted with commercial propane. The Sector acknowledged that the properties of DME may be similar 

to that of commercial propane; however, the Sector agreed that, if a Certificate has been issued based on testing with 

propane, additional testing is needed with DME in order to add DME to the Certificate. If a meter is only tested 

with DME, then the resulting Certificate will apply only to DME. If data is provided from NTEP testing of a meter 

using both propane and DME, the Sector is amenable to further considering whether or not it might be appropriate to 

include the chemical DME in the “Compressed Liquids” category of the Product Families Table. However, the 

Sector does not plan to undertake an effort to collect such data.

Additional Items as Time Allows:

If time permits, the NCWM S&T Committee and the NTEP Software Sector would appreciate input from the 

Measuring Sector on the measuring-related issues that are outlined in the remaining agenda items below. A copy of 

any regional association modifications or positions will be provided to the Sector when these are made available by 

the regions.

6. Appendix D – Definitions: Remote Configuration Capability, NCWM S&T Committee Item 360-7 

Source:

2013 NCWM S&T Committee (2012 Grain Analyzer Sector Meeting Summary)

Background/Discussion:

At its 2012 meeting, the Grain Analyzer Sector agreed to forward a proposal to amend the definition of “remote 

configuration capability” in NIST Handbook 44 to the S&T Committee for consideration. The following changes 

were proposed:
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D17

remote configuration capability. – The ability to adjust a weighing or measuring device or change its sealable 

parameters from or through some other device that is not may or may not itself be necessary to the operation 

of the weighing or measuring device or is not may or may not be a permanent part of that device. [2.20, 2.21, 

2.24, 3.30, 3.37, 5.56(a)]

(Added 1993, Amended 20XX) 

The Sector noted in their proposal that removable digital storage devices containing the latest grain calibrations can 

be used in grain moisture meters (GMMs) as either data transfer devices that are not necessary to the operation of 

the GMM or as data storage devices which are necessary to the operation of the GMM. If removable data storage 

devices are necessary to the operation of the device, they are not covered by the current definition of remote 

configuration capability. 

A USB flash drive is most likely to be used as a data transfer device. In a typical data transfer application, the USB 

flash drive is first connected to a computer with access to the GMM manufacturer’s web site to download the latest 

grain calibrations that are then stored in the USB flash drive. The USB flash drive is removed from the computer 

and plugged into a USB port on the GMM. The GMM is put into remote configuration mode to copy the new grain 

calibration data into the GMM’s internal memory. When the GMM has been returned to normal operating 

(measuring) mode, the USB flash drive can be removed from the GMM.

Although a Secure Digital (SD) memory card could also be used as a data transfer device, it is more likely to be used 

as a data storage device. In a typical “data storage device” application, the SD memory card stores the grain 

calibrations used on the GMM. The SD memory card must be plugged into an SD memory card connector on a 

GMM circuit card for the GMM to operate in measuring mode. To install new grain calibrations the GMM must be 

turned “off” or put into a mode in which the SD memory card can be safely removed. Either the SD memory card 

can be replaced with an SD memory card that has been programmed with the new grain calibrations, or the original 

SD memory card can be re-programmed with the new grain calibrations in much the same way as that described in 

the preceding paragraph to copy new grain calibrations into a USB flash drive. In either case, the SD memory card 

containing the new calibrations must be installed in the GMM for the GMM to operate in measuring mode. In that 

regard, the SD memory card (although removable) can be considered a permanent part of the GMM in that the 

GMM cannot operate without it.

Note: In the above example SD memory card could be any removable flash memory card such as the Secure Digital 

Standard-Capacity, the Secure Digital High-Capacity, the Secure Digital Extended-Capacity, and the Secure Digital 

Input/Output, which combines input/output functions with data storage. These come in three form factors: the 

original size, the mini size, and the micro size. A Memory Stick is a removable flash memory card format launched 

by Sony in 1998, and is also used in general to describe the whole family of Memory Sticks. In addition to the 

original Memory Stick, this family includes the Memory Stick PRO, the Memory Stick Duo, the Memory Stick PRO 

Duo, the Memory Stick Micro, and the Memory Stick PRO-HG.

During its Open Hearings at the 2013 NCWM Interim Meeting, the Committee heard comments from Ms. Juana 

Williams (NIST, OWM). OWM suggested the Committee consider this item as a Developing item to allow other 

Sectors to discuss how a change to the definition may affect other device types of similar design and to consider 

changes if needed. OWM recognizes that the current definition for “remote configuration capability” may not

address those grain moisture meters (GMMs) which can only be operated with a removable data storage device, 

containing, among other things, the grain calibrations intended for use with the GMM, inserted in the device (as was 

described by the Grain Analyzer Sector). As such, OWM noted that current sealing requirements were developed at 

a time when such technology likely didn’t exist, nor could be envisioned, and are based on the current definition of 

remote configuration capability. Because the current definition was never intended to apply to this “next 

generation” technology, OWM suggested that those charged with further development of this item may wish to 

revisit the five philosophies of sealing and consider whether a new paragraph, completely separate from current 

sealing requirements, might be appropriate and a better option, than the one currently proposed. The five 

philosophies of sealing are included in the 1992 Report of the 77th National Conference on Weights and Measures

(Report of the Specifications and Tolerances Committee). Another option, preferred over the changes currently 

proposed, would be to add a separate statement to the current definition of “remote configuration capability” to 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D18

address removable storage devices. For example, the following sentence might be considered as an addition to the 

current definition for “remote configuration capability:”

Devices which are programmed using removable media (such as SD cards, flash drives, etc.) that may or 

may not be required to remain with the device during normal operation are also considered to be 

remotely configured devices. 

The Committee also heard comments from Mr. Karimov (Liquid Controls), speaking on behalf of the MMA, who 

made two points: (1) flow computers may already have these capabilities, thus it may be more appropriate to 

consider adding requirements to the General Code so that the requirements will be uniformly applied to all device 

types; and (2) the Committee should look ahead and consider other capabilities that may or already have emerged 

such as wireless communication and configuration.

The Committee acknowledged the comments indicating that the current definition of “remote configuration 

capability” was developed at a time when certain technologies, such as blue tooth, SD storage devices, flash drives, 

etc., didn’t exist. The Committee recognized that it may be difficult to modify the existing definition and associated 

requirements to be flexible enough to address emerging and future technologies without having a significant (and 

possibly detrimental impact) on existing devices. Consequently, rather than modifying the current definition, the 

Committee concluded that a better approach might be to develop an entirely separate set of security requirements 

that would apply to emerging technologies. The Committee believes that additional work is needed to develop 

proposed definition(s) and associated requirements and decided to designate the item as Developmental. The 

Committee requests other Sectors review the Grain Sector’s proposed modification to the definition as well as 

OWM’s suggestions and provide input.

During the 2013 NTEP Laboratory Meeting, the NTEP evaluators were asked if they were aware of or had observed 

during any of their evaluations of a weighing or measuring device, one which required some form of memory card 

or data storage device be installed in order for the device to be operational in the measuring or weighing mode. A 

weighing representative from Measurement Canada reported that he had observed scales having flash drives (some 

of which were micro in size) that are sealed via physical seal that contain calibration information and possibly even 

the operating system stored on a card, which must remain in the device in order for the device to be operational. 

The U.S. NTEP evaluators (i.e., on both the weighing and measuring side) reported they had no knowledge of such 

technology being used in devices they had evaluated, but they also acknowledged that it could have been present 

without them noticing it during the evaluation process. 

At the 2013 NCWM Annual Meeting, OWM reiterated comments it made at the 2013 Interim Meeting suggesting it 

may be appropriate to develop separate requirements to address new and future technologies that can be remotely 

configured with removable media. OWM indicated it plans to develop draft language and request input from the 

various Sectors at their upcoming meetings. Two additional comments were made in support of possibly including 

requirements in the General Code of NIST Handbook 44 to address newer and emerging technologies. 

Additional background information relative to this item can be found in 2013 NCWM Publication 16 at: 

http://www.ncwm.net/resources/dyn/files/1025938z8fff0401/_fn/2013_ST_Pub16.pdf

Recommendation: 

The Sector is asked to identify the various types of removable storage media (e.g., USB flash drives, SD memory 

cards, etc.) currently in use with measuring equipment and explain the functionality of that media. OWM 

anticipates possibly using the information provided by the Sector to develop some draft proposals to amend NIST 

Handbook 44 to adequately address the security of the metrological significant parameters of devices using such 

media. Members of the Sector may wish to review NCWM Publication 14 LMD Technical Policy, Checklists, and 

Technical Procedures, Appendix B Requirements for Metrological Audit Trails prior to the Sector meeting to refresh 

their understanding of the various acceptable means of providing security.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D19

Discussion: 

Sector Chairman, Mr. Keilty (Endress + Hauser) introduced the item and described Endress + Hauser’s process for 

storing significant parameters in removable media which is part of the device and under physical security. The 

ensuing discussion centered largely on the definitions of the various types of devices and how removable media 

might be used with them. Mr. John Roach (California) noted that a removable memory stick or memory card is 

covered by the current definition of “remote configuration” and NTEP Director, Mr. Truex, noted that this view is 

consistent with that of NIST, OWM. The Sector agrees that the current language in NIST Handbook 44 addresses 

devices that can be adjusted using these types of removable media.

Decision: 

The Sector does not support the language “may or may not be necessary” because this phrase changes the category 

of what is considered “remote configuration capability.” The Sector agreed that, if the card (or other removable 

device) needs to be a part of the measuring device for normal operation, then the card is effectively part of the 

device; in that case, the measuring device is a Category 1. If the card is only used for configuration or calibration 

and is not necessary for the operation of the measuring device, the measuring device is a Category 2. The Sector 

discussed whether or not additional guidance might be needed on what is covered by each sealing category; 

however, concluded that the definitions are adequate as currently written.

7. Identification of Certified Software

Source: 

NTEP Software Sector

Background: This item originated as an attempt to answer the question “How does the field inspector know that 

the software running in the device is the same software evaluated and approved by the lab?” In previous meetings it 

was shown that the international community has addressed this issue (both WELMEC and OIML). 

At the 2012 NTETC Software Sector Meeting, there was some discussion as to where the terminology regarding 

inextricably linking the software version or revision to the software itself belonged. The Sector recommended 

adding the following to NCWM Publication 14 and forward to NTETC Weighing, Measuring, and Grain Analyzer 

Sectors for feedback:

Identification of Certified Software:

Note: Manufacturers may choose to separate metrologically significant software from non-metrologically 

significant software. Separation would allow the revision of the non-metrological portion without the need for 

further evaluation. In addition, non-metrologically significant software may be updated on devices without breaking

a seal, if so designed. Separation of software requires that all software modules (programs, subroutines, objects etc.) 

that perform metrologically significant functions or that contain metrologically significant data domains form the 

metrologically significant software part of a measuring instrument (device or sub-assembly). If the separation of the 

software is not possible or needed, then the software is metrologically significant as a whole. The conformity 

requirement applies to all parts and parts shall be marked according to Section G-S-X.X.

The manufacturer must describe and possibly demonstrate how the version or revision identifier is directly and 

inseparably linked to the metrologically significant software. Where the version revision identifier is comprised 

of more than one part, the manufacturer shall describe which portion represents the metrological significant 

software and which does not.

Recommendation: 

The Software Sector is requesting feedback on the following language developed by the Software Sector in 2012 for 

possible future inclusion into NCWM Publication 14 Weighing Devices, DES pages 22-23, Section 3. Additional 

Marking Requirements – Not Built-for-Purpose Software-Based Devices: 

Identification of Certified Software:

Note: Manufacturers may choose to separate metrologically significant software from non-metrologically 

significant software. Separation would allow the revision of the non-metrological portion without the need for 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D20

further evaluation. In addition, non-metrologically significant software may be updated on devices without breaking 

a seal, if so designed. Separation of software requires that all software modules (programs, subroutines, objects etc.) 

that perform metrologically significant functions or that contain metrologically significant data domains form the 

metrologically significant software part of a measuring instrument (device or sub-assembly). If the separation of the 

software is not possible or needed, then the software is metrologically significant as a whole. The conformity 

requirement applies to all parts and parts shall be marked according to Section G-S-X.X.

The manufacturer must describe and possibly demonstrate how the version or revision identifier is directly and 

inseparably linked to the metrologically significant software. Where the version revision identifier is comprised of 

more than one part, the manufacturer shall describe which portion represents the metrological significant software 

and which does not.

Discussion: 

Sector Chairman, Mr. Mike Keilty (Endress + Hauser), introduced the item and NTEP Director, Mr. Jim Truex, and 

he provided additional details on the item. Mr. Truex noted that the Grain Analyzers Sector looked at the proposal 

and agreed to consider the proposal at greater length. Grain analyzer manufacturers also agreed to take the item to 

their software experts for additional input band bring any recommendations back to the Sector. Mr. Truex reported 

that the Weighing Sector proposed adding the two paragraphs, with the exception of the last sentence of paragraph 

one. Mr. Truex noted that, in the LMD checklist, the language might be considered for addition to checklist item 

1.6. He also commented that questions have been raised by inspectors about how to find software that has a newer 

revision number that the software found in the device that the inspector is examining. While the Software Sector 

includes representatives from four state weights and measures programs, there are no field inspectors on the Sector.

Mr. Keilty noted that the first paragraph in the recommendation appears permissive, whereas the second appears to 

be a requirement. He also stated that he would like the opportunity to further consider the proposed language and to 

take it to his company’s software engineers for review and input. Mr. Paul Glowacki (Murray Equipment) indicated 

he would like to do the same. Mr. Gordon Johnson (Gilbarco) commented that Gilbarco’s software is not written in 

this way and some commented that there may be differences in firmware versus software.

Mr. Dennis Beattie (Measurement Canada) commented that it is difficult for the Software Sector to anticipate future 

devices given the approaches used in developing software today. He noted there is a need for the Sector to focus on 

future and cutting edge technology rather than be overly concerned about how potential changes might affect 

existing equipment. He reported that the WELMEC standards requires manufacturers to explain the numbering 

schemes used in their equipment, and the numbering scheme is to be identified on the type approval certificate.

Decision: 

After considerable discussion of the proposed changes, the Measuring Sector rejected the recommendation to 

include the proposed changes in NCWM Publication 14. Measuring Sector manufacturers asked for additional time 

to consider the proposal and carry it back to their respective companies’ software engineers for input. The Sector 

agreed to carry this item over to its next meeting to allow the manufacturers time to study this issue and bring back 

alternative(s) to consider.

8. Software Protection/Security

Source:

NTEP Software Sector

Background

The Sector agreed that NIST Handbook 44 already has audit trail and physical seal, but these may need to be 

enhanced.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D21

From the WELMEC Document:

Protection against accidental or unintentional changes: 

Metrologically significant software and measurement data shall be protected against accidental or unintentional 

changes.

Specifying Notes:

Possible reasons for accidental changes and faults are: unpredictable physical influences, effects caused by user 

functions and residual defects of the software even though state of the art of development techniques have been 

applied. 

This requirement includes consideration of:

a) Physical influences: stored measurement data shall be protected against corruption or deletion when a fault 

occurs or, alternatively, the fault shall be detectable.

b) User functions: confirmation shall be demanded before deleting or changing data.

c) Software defects: appropriate measures shall be taken to protect data from unintentional changes that could 

occur through incorrect program design or programming errors (e.g., plausibility checks). 

Required Documentation:

The documentation should show the measures that have been taken to protect the software and data against 

unintentional changes.

Example of an Acceptable Solution:

• The accidental modification of software and measurement data may be checked by calculating a checksum 

over the relevant parts, comparing it with the nominal value and stopping if anything has been modified.

• Measurement data are not deleted without prior authorization (e.g., a dialogue statement or window asking 

for confirmation of deletion). 

• For fault detection see also Extension I.

The Sector continued to develop a proposed checklist for NCWM Publication 14. The numbering will still need to 

be added. This is based roughly on R 76-2 checklist and discussions beginning as early as the October 2007 NTETC 

Software Sector Meeting. The information requested by this checklist is currently voluntary; however, it is 

recommended that applicants comply with these requests or provide specific information as to why they may not be 

able to comply. Based on this information, the checklist may be amended to better fit with NTEP's need for 

information and the applicant's ability to comply.

The California, Maryland, and Ohio laboratories agreed to use this check list on one of the next devices they have in 

the lab and report back to the Sector on what the problems may be. In February 2011, the North Carolina laboratory 

was also given a copy of the check list to try.

1. Devices with Embedded Software TYPE P (aka built-for-purpose)

 1.1. Declaration of the manufacturer that the software is used in a fixed hardware 

and software environment. AND

Yes No N/A

 1.2. Cannot be modified or uploaded by any means after securing/verification. Yes No N/A

Note: It is acceptable to break the "seal" and load new software, audit trail is 

also a sufficient seal.

1.3 The software documentation contains:

1.3.1. Description of all functions, designating those that are considered 

metrologically significant.

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D22

1.3.2. Description of the securing means (evidence of an intervention). Yes No N/A

1.3.3. Software Identification, including version/revision Yes No N/A

1.3.4. Description how to check the actual software identification. Yes No N/A

1.4. The software identification is:

1.4.1. Clearly assigned to the metrologically significant software and functions. Yes No N/A

1.4.2. Description how to check the actual software identification. Yes No N/A

1.4.3. Provided by the device as documented. Yes No N/A

1.4.4. Directly linked to the software itself. Yes No N/A

2. Personal Computers, Instruments with PC Components, and Other Instruments, Devices, Modules, and 

Elements with Programmable or Loadable Metrologically Significant Software TYPE U (aka not builtfor-purpose)

2.1. The metrologically significant software is:

2.1.1. Documented with all relevant information. (see below for list of 

documents)

Yes No N/A

2.1.2. Protected against accidental or intentional changes. Yes No N/A

2.2. Evidence of intervention (such as, changes, uploads, circumvention) is 

available until the next verification / inspection (e.g., physical seal, Checksum, 

Cyclical Redundancy Check (CRC), audit trail, etc. means of security).

Yes No N/A

3. Software with Closed Shell (no access to the operating system and/or programs possible for the user) 

3.1. Check whether there is a complete set of commands (e.g., function keys or 

commands via external interfaces) supplied and accompanied by short 

descriptions.

Yes No N/A

3.2. Check whether the manufacturer has submitted a written declaration of the 

completeness of the set of commands.

Yes No N/A

4. Operating System and/or Program(s) Accessible for the User

4.1. Check whether a checksum or equivalent signature is generated over the 

machine code of the metrologically significant software (program module(s) 

subject to legal control Weights and Measures jurisdiction and type-specific 

parameters).

Yes No N/A

4.2. Check whether the metrologically significant software will detect and act upon 

any unauthorized alteration of the metrologically significant software using 

simple software tools (e.g., text editor).

Yes No N/A

5. Software Interface(s)

5.1.Verify the manufacturer has documented:

5.1.1. The program modules of the metrologically significant software are 

defined and separated.

Yes No N/A

5.1.2. The protective software interface itself is part of the metrologically 

significant software.

Yes No N/A

5.1.3. The functions of the metrologically significant software that can be 

accessed via the protective software interface.

Yes No N/A

5.1.4. The parameters that may be exchanged via the protective software Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D23

interface are defined.

5.1.5. The description of the functions and parameters are conclusive and 

complete.

Yes No N/A

5.1.6. There are software interface instructions for the third-party (external) 

application programmer.

Yes No N/A

The Maryland laboratory had particular questions regarding 3.1. and 5.1. The information for 3.1. could be acquired 

from an operator’s manual, a training video, or in-person training. The items in 5.1. were confusing to the 

evaluators. The terminology is familiar to software developers, but not necessarily others. It was indicated that 

manufacturers were typically quick to return the filled out questionnaire, but he didn’t know how his laboratory was 

supposed to verify that it was true. Generally, the laboratories wouldn’t be expected to verify things to that level. 

For example, if the manufacturer states that a checksum is used to ensure integrity, the laboratories wouldn’t be 

expected to evaluate the algorithm used.

The intent was to see whether the manufacturer had at least considered these issues, not for evaluators to become 

software engineers. Perhaps a glossary or descriptive paragraphs might be added to assist the evaluators for if the 

manufacturer has questions for the evaluators.

OIML makes use of supplementary documents to explain the checklist they use. Below are links:

http://www.oiml.org/publications/D/D031-e08.pdf

http://www.welmec.org/latest/guides/72.html

http://www.welmec.org/fileadmin/user_files/publications/2-3.pdf

WELMEC Document 2.3 is the original source for our checklist, but it’s been significantly revised and simplified. 

Mr. Payne (Maryland Department of Agriculture) is going to review the other documents and come up with some 

suggestions for the checklist. Mr. Roach (California Division of Measurement Standards) is going to begin using 

the checklist. The international viewpoint is that any device running an operating system is considered to be 

Type U. Mr. Roach mentioned that they’re having lots of problems with “skimmers” stealing PINs. Is there some 

way they can detect this?

Mr. Lewis (Rice Lake Weighing Systems, Inc.) mentioned he liked Measurement Canada’s website. When 

answering similar questions, different pages would appear, based on answers to those questions: 

http://www.ic.gc.ca/eic/site/mc-mc.nsf/eng/lm00573.html. 

At the 2011 NTETC Software Sector Meeting, the laboratories were polled to obtain any feedback on the use of the 

checklist. Maryland attempted to use this checklist a few times. They had some difficulty obtaining answers from 

the manufacturers because the individual(s) interacting with the Maryland evaluator didn’t always have the required 

information on hand. More experience in using the checklist will help determine what needs to be revised. It was 

suggested that the checklist could be sent to manufacturers for their feedback as well, with the stipulation that it a 

completely voluntary exercise and purely informational at this point. The laboratories will coordinate with willing 

manufacturers to obtain feedback.

Work is ongoing on this item with the intent that it eventually will be incorporated as a checklist in NCWM 

Publication 14; again the laboratories are requested to try utilizing this checklist for any evaluations on softwarebased electronic devices.

The checklist has been reviewed with an eye to making its terminology clearer to laboratories. Some examples and 

clarifications have been added as shown in the discussion section of this item. The revised checklist will be 

distributed to the laboratories for additional review. Maryland and California laboratories agreed to use the checklist 

on a trial basis.

Over the past year, attempts to use the current checklist did not meet with many difficulties. The checklists were 

given to the manufacturers to fill out, and that seemed to work rather well. Minor modifications (in red above) were 

made to clarify certain confusing areas or eliminate redundancy. 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D24

Recommendation: 

The Software Sector is recommending that each NTETC Sector consider adding the proposed software checklist 

(shown in the table above) to their respective and appropriate NCWM Publication 14 device checklists. Thus, the 

MS was asked to consider whether or not it is appropriate to add the proposed software checklist to NCWM 

Publication 14, and if so, to which of the checklists within NCWM Publication 14 Liquid Measuring Devices it is be 

included (for example, LMD General, RMFD, ECR-LMD, etc.). 

Discussion: 

Mr. Truex (NTEP Director) introduced the item and noted that the Software Sector made this recommendation in 

March 2013. He reported that the Grain Analyzer Sector rejected the proposal as did the Weighing Sector. A 

concern on the part of the other Sectors was that these criteria could not be applied to older devices and the issue of 

establishing non-retroactive requirements needs to be addressed. The Sectors also noted that the proposed language 

is not supported by corresponding requirements in NIST Handbook 44. A question was raised about Checklist Item 

1.2., which implies that it is not permissible to load any metrological or non-metrological software without breaking 

a seal. Additionally, some terms such as “fixed software” and “software environment” were not defined and there 

was confusion about other terminology. There was general lack of understanding of the proposed requirements and 

many present were unable to see the direction in which the proposed changes were heading.

Mr. Gordon Johnson (Gilbarco) questioned whether or not there are concerns about the need for evaluator training. 

Mr. Dennis Beattie (Measurement Canada) pointed out that these requirements are a very small subset of the 

WELMEC requirements referenced. He also suggested that the issue of retroactivity be addressed first; he noted 

that Measurement Canada is working on a non-retroactive bulletin that will be based on WELMEC 7.2 and the 

manufacturer will be required to demonstrate that the device minimizes the ability for fraud. Mr. Truex stated that 

NTEP does not plan to go forward with software testing and evaluation directly.

Mr. John Roach (California Division of Measurement Standards) and Mr. Allen Katalinic (North Carolina) 

suggested that the Sector consider taking a small step of putting something into NCWM Publication 14 as a starting 

point. Although the Sector discussed this item at length, the Sector was unable to reach agreement on any proposed 

language and noted that many present did not feel they had the expertise to speak on the issue of software attributes. 

Decision: 

After considerable discussion and debate on the proposed changes, the Measuring Sector rejected the 

recommendation to include the proposed changes in NCWM Publication 14. Measuring Sector manufacturers were 

unable to add any contributions during the meeting that would lead to agreement to include the proposed changes in 

NCWM Publication 14, citing a lack of expertise to make an informed proposal or decision. However, the 

manufacturers committed to the task of taking this issue to their companies’ software engineers to flesh out the 

proposal. The Sector agreed to carry this item over to its next meeting to allow the manufacturers time to study this 

issue and bring back alternative(s) to consider.

9. Software Maintenance and Reconfiguration

Source:

NTEP Software Sector

Background: 

After the software is completed, what do the manufacturers use to secure their software? The following items were 

reviewed by the Sector. Note: Agenda Item 3 also contains information on Verified and Traced updates and 

Software Log.

1. Verify that the update process is documented. (OK)

2. For traced updates, installed Software is authenticated and checked for integrity. 

Technical means shall be employed to guarantee the authenticity of the loaded software (i.e., that it originates 

from the owner of the type approval certificate). This can be accomplished (e.g., by cryptographic means like 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D25

signing). The signature is checked during loading. If the loaded software fails this test, the instrument shall 

discard it and either use the previous version of the software or become inoperative. 

Technical means shall be employed to guarantee the integrity of the loaded software (i.e., that it has not been 

inadmissibly changed before loading). This can be accomplished for example, by adding a checksum or hash 

code of the loaded software and verifying it during the loading procedure. If the loaded software fails this test, 

the instrument shall discard it and either use the previous version of the software or become inoperative. 

Examples are not limiting or exclusive.

3. Verify that the sealing requirements are met. 

The Sector asked, “What sealing requirements are we talking about?” 

This item is only addressing the software update, it can be either verified or traced. It is possible that there are 

two different security means, one for protecting software updates (software log) and one for protecting the other 

metrological parameters (Category I, II, or III method of sealing). Some examples provided by the Sector 

members include but are not limited to:

• Physical seal, software log

• Category III method of sealing can contain both means of security

4. Verify that if the upgrade process fails, the device is inoperable or the original software is restored. 

The question before the group is, “Can this be made mandatory?” 

The manufacturer shall ensure by appropriate technical means (e.g., an audit trail) that traced updates of 

metrologically significant software are adequately traceable within the instrument for subsequent verification 

and surveillance or inspection. This requirement enables inspection authorities, which are responsible for the 

metrological surveillance of legally controlled instruments, to back-trace traced updates of metrologically 

significant software over an adequate period of time (that depends on national legislation). The statement in 

italics will need to be reworded to comply with U.S. weights and measures requirements. 

The Sector agreed that the two definitions below for Verified update and Traced update were acceptable.

Verified Update

A verified update is the process of installing new software where the security is broken and the device must be 

re-verified. Checking for authenticity and integrity is the responsibility of the owner/user.

Traced Update

A traced update is the process of installing new software where the software is automatically checked for 

authenticity and integrity, and the update is recorded in a software update log or audit trail.

Note: It’s possible that the Philosophy of Sealing section of NCWM Publication 14 may already address the above 

IF the definitions of Verified and Traced Updates (and the statement below) were to be added. The contrary 

argument was that it may be better to be explicit).

Use of a Category 3 audit trail is required for a Traced Update. A log entry representing a traced 

software update shall include the software identification of the newly installed version.

The Sector recommended consolidating the definitions with the above statement thus:

Verified Update

A verified update is the process of installing new software where the security is broken and the device must be 

re-verified. Checking for authenticity and integrity is the responsibility of the owner/user.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D26

Traced Update

A traced update is the process of installing new software where the software is automatically checked for 

authenticity and integrity, and the update is recorded in a software update log or Category 3 audit trail. The 

audit trail entry shall include the software identification of the newly installed version.

In 2012, the Sector recommended that as a first step, the following be added to NCWM Publication 14: 

The updating of metrologically significant software, including software that checks the authenticity and 

integrity of the updates, shall be considered a sealable event.

Mr. Truex (NTEP Administrator) indicated his opinion that the above sentence is unnecessary since it’s self-evident. 

It was agreed by the group, however, to ask the other Sectors for feedback on the value of this addition. Though the 

Sector is currently considering only the single sentence be incorporated into NCWM Publication 14 for the time 

being, ultimately, the Sector may wish to advance the remaining language of the original item submission.

Discussion:

The Sector had no information indicating that the other Sectors had yet been approached for feedback on the value 

of the addition of the proposed sentence.

Recommendation:

The Software Sector is requesting each of the NTETC Sectors review and provide feedback on the following draft 

language it developed for consideration of adding it to NCWM Publication 14: 

The updating of metrologically significant software, including software that checks the authenticity and 

integrity of the updates, shall be considered a sealable event.

Should the MS agree this language is appropriate, it might then consider where within NCWM Publication 14 

Liquid-Measuring Devices this sentence should be inserted. The Sector might consider including it in the 

appropriate sealing sections of Publication 14 relating to auditing trails. For example:

• LMD Checklist:

o General, Section 2. Graduations, Indications and Recorded Representations, Code Reference G-S.8.

o RMFDs, Section 9. Measuring Elements, Code Reference S.2.2. Provision for Sealing and Code 

Reference: S.2.2.1. Multiple Measuring Devices with a Single Provision for Sealing

o Wholesale and Loading Rack Meters, Section 19. Measuring Elements, Code Reference 

S.2.2. Provision for Sealing and Code Reference: S.2.7.3. Provision for Sealing - Automatic 

Temperature Compensation

o Vehicle-Tank Meters, Section 26. Measuring Elements, Code Reference S.2.2. Provision for Sealing 

and Code Reference: S.2.6.2. Provision for Sealing

o LPG and NH3 Meters, Section 31. Measuring Elements, Code Reference S.2.2. Provision for Sealing 

o Mass Flow Meters, Section 36. Measuring Elements, Code Reference: S.3.5. Provision for Sealing

o Water Meters Checklist, Section 45 Measuring Elements, Code Reference: S.2.1. Provision for Sealing

o Hydrogen Gas Measuring Devices, Section 51. Design of Measuring Elements and Measuring 

Systems, Code Reference: S.3.3. Provision for Sealing

o LMD Checklist Appendix B Requirements for Metrological Audit Trails

• ECR-LMD Checklist

o Section 4. Provisions for Sealing, Code Reference: G-S.8. Provision for Sealing Electronic 

Adjustable Components

The Software Sector is also requesting feedback from the other NTETC Sectors regarding whether or not additional 

language such as the following is needed in NCWM Publication 14 to make clear that an existing audit trail should 

be protected during a software update. In the background information provided for this item, it was noted that the 

Software Sector noted that this does already seem to be addressed in the Requirements for Metrological Audit 

Trails. 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D27

1. The audit trail data shall be:

3.5.1.1.1. Stored in non-volatile memory and shall be retained for at least 30 days if power is removed 

from the device. AND

3.5.1.1.2. Protected from unauthorized erasure, substitution, or modification.

Discussion: 

Mr. Truex (NTEP Director) described feedback from the Weighing Sector and Grain Sectors in their discussions of 

this item. Mr. Beattie (Measurement Canada) noted that the software described in the recommendation policies the 

authenticity of the existing software in an electronic weighing or measuring system. This software would be 

separate from audit trail information and the event of a change in software would be considered a metrologically 

significant event. In discussing this item, some members noted that there are no NIST Handbook 44 requirements to 

support the language proposed for inclusion in NCWM Publication 14. 

Decision: 

The Measuring Sector rejected the recommendation to include the proposed changes in NCWM Publication 14. 

Measuring Sector manufacturers were unable to add any contributions during the meeting that would lead to 

agreement to include the proposed changes in NCWM Publication 14; however, they committed to the task of taking 

this issue to their companies’ software engineers to flesh out the proposal. The Sector agreed to carry this item over 

to its next meeting to allow the manufacturers time to study this issue and bring back alternative(s) to consider.

10. LNG Metering Applications

Source: 

Michael Keilty, Endress + Hauser, Chairman, NTEP Measuring Sector

Background: 

The number of LNG dispensing applications is growing in the United States NIST Handbook 44 does not 

specifically address this application and many questions have come up regarding the requirements for metering 

devices at both retail level and also for large capacity and wholesale applications. Likewise, there are many 

questions about the appropriate testing procedures and criteria for these applications. Questions about this 

application have arisen within OIML R 117 discussions and Canada has a draft regulation for dispensing LNG

already developed. NIST has begun reviewing proposed approaches for addressing LNG within NIST 

Handbook 44; however, does not have any specific proposals for consideration at this point.

Recommendation: 

While there is no specific recommendation for the Sector to consider, the Sector is asked to provide input on how to 

best address this product in NIST Handbook 44 and NCWM Publication 14 as well as for suggestions on proposed 

testing criteria. Additional information may be provided by Mr. Keilty at the Sector Meeting.

Discussion: 

Mr. Keilty introduced this item and noted related work taking place as part of an OIML project on OIML R 117-2. 

Mr. Beattie described some changes that Canada plans to propose to R 117-1 relative to LNG, although he noted that 

these changes will not be considered until R 117-1 is open for revision. Mr. Beattie described examples of a 

dispensing system for LNG and the group discussed various aspects of these measuring systems, including the use 

of vapor return lines as opposed to venting. Mr. John Roach (California Division of Measurement Standards) 

reported some challenges in selecting an appropriate reference scale for use in testing these systems, noting that 

platform scales are not generally practical and hanging scales have seemed to work best. Mr. Roach also noted that, 

of the LNG systems tested under NTEP, LNG was used as the test produce in one of the systems where a vapor 

recovery system was used; the other three used liquid nitrogen and the liquid nitrogen was vented. He reported that 

draft sizes were varied and a tolerance of 1.5 % was applied. He also noted that one manufacturer wanted to use a 

turbine meter in the testing; in this case, he believes testing needs to be conducted at additional flow rates.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

NTEP - D28

Decision: 

This item was included on the Sector’s agenda for information purposes only to allow the Sector to discuss some 

aspects of testing LNG systems. Consequently, the Sector made no decisions on this item.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1) 

NTEP - D / A1 

Appendix D/Sub-Appendix A

National Type Evaluation Program

Checklist for Testing Electronic Digital Indicators with Simulated Inputs

(Agenda Item 1) 

April 18, 2013

This checklist is used for Technical Policy U. Evaluating electronic digital indicators submitted separate from 

a measuring element. This section is intended for lab testing only. Is permanence necessary? If new 

evaluation (yes) if updating existing CC (no). 

Code Reference: G-S.1. Identification

All equipment shall be clearly and permanently marked on an exterior visible surface after installation. It must 

contain the following information (prefix lettering may be initial capitals, all capitals, or all lower case):

1.1. Name, initials, or trademark of the manufacturer. Yes  No  N/A 

1.2. A model designation that positively identifies the pattern or design. The Model 

designation shall be prefaced by the word “Model”, “Type”, or “Pattern.” 

These terms may be followed by the term “Number” or an abbreviation of that 

word. The abbreviation for the word "Number" shall, at a minimum, begin with 

the letter “N” (e.g., No or No.) The abbreviation for the word “Model” shall be 

“Mod” or “Mod.”

Yes  No  N/A 

1.3. Except for not built-for-purpose, software-based devices, a nonrepetitive serial 

number. The serial number shall be prefaced by words, an abbreviation, or a 

symbol, that clearly identifies the number as the required serial number. 

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.).

Yes  No  N/A 

1.4. For not built-for-purpose, software-based devices the current software version 

or revision designation. The version or revision identifier shall be prefaced by 

the word “Version” or “Revision” as appropriate and either word may be 

followed by the word “Number.” The abbreviations for the word “Version” 

shall, as a minimum, begin with the letter “V.” The abbreviation for the word 

“Number” shall, as a minimum, begin with the letter “N” (e.g., No or No.).

Yes  No  N/A 

Code Reference G-S.1. (e).
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1)

NTEP - D / A2 

1.5. The NTEP Certificate of Conformance (CC) Number or a corresponding CC 

addendum number for devices that have a CC. The number shall be prefaced 

by the terms “NTEP CC,” “CC,” or “Approval.” These terms may be followed 

by the word “Number” or an abbreviation for the Word “Number.” The 

abbreviation shall as a minimum begin with the letter “N” (e.g., No or No.).

The device must have an area, either on the identification plate or on the device 

itself, suitable for the application of the Certificate of Conformance Number. If 

the area for the CC Number is not part of an identification plate, then note its 

intended location below and how it will be applied. Ex. May be part of W&M 

display screen, using the requirements of section 1.6.2

Location of CC Number if not located with the identification:

Yes  No  N/A 

Code Reference: G-S.1.1. Location of Marking Information for Not Built-forPurpose, Software-Based Devices Not Built-for-Purpose Devices, Software-Based

1.6. For not built-for-purpose, software-based devices the following shall apply:

1.6.1. The required information in G-S.1. Identification. (a), (b), (d), and (e) 

shall be permanently marked or continuously displayed on the 

device; or

1.6.2. The Certificate of Conformance (CC) Number shall be:

• permanently marked on the device; or

• continuously displayed; or

• accessible through an easily recognized menu and, if 

necessary, a submenu. Examples of menu and submenu 

identification include, but are not limited to “Help,” 

“System Identification,” “G-S.1. Identification,” or 

“Weights and Measures Identification.”

Note: For (1.6.2.), clear instructions for accessing the information required in G-S.1. (a), (b), and (d) shall be 

listed on the CC, including information necessary to identify that the software in the device is the same type that 

was evaluated.

AK - This is not a lab issue, this is a field requirement due to the fact that the 

equipment is being lab evaluated, the evaluator will not see the end use installation.

Code Reference: G-S.2. Facilitation of Fraud

This applies to all metering system indicators installed at a fixed location or vehicle tank meter applications and 

controlled remotely or within the device itself. 

This requirement addresses the process of changing the unit price or unit prices set in a metering system.

Other item fall under facilitation of fraud, needs more input

Example if Cat 3 device verify passwords and audit trail is correct....
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1) 

NTEP - D / A3 

1.9. The system shall prevent a change of unit price during a delivery. Yes  No  N/A 

AK – This is not a lab issue, this is a field requirement due to the fact that the 

equipment is being lab evaluated, the evaluator will not see the end use installation.

Code Reference: G-S.4. Interchange or Reversal of Parts

If a metering system has parts that may be interchanged or reversed in normal field assembly, the system shall either 

be constructed so that reversal will not affect the accuracy of the system or the parts must be marked to indicate 

their proper position. For most metering devices, this applies only to the reversal of connectors of cables to 

peripheral devices. 

If a metering system has any parts that may be interchanged or reversed in normal field assembly, the parts must 

either be:

1.13. Constructed so that reversal will not affect performance, Yes  No  N/A 

1.14 Marked or keyed to indicate their proper positions. May have multiple cable 

connections but not interchangeable due to different plug styles, or;

Yes  No  N/A 

1.15. Cables are connected but are not removable without breaking a seal and 

opening housing. (Note: may need NIST Handbook 44 requirement to 

cover this)

Yes  No  N/A 

2. Indications, and Recorded Representations Look at different codes

Code Reference: G-S.5.1. Indicating and Recording Elements

Several general requirements facilitate the reading and interpretation of displayed values. Each display for quantity 

or total price must be appropriate in design and have sufficient capacity for particular applications to be suitable for 

the application. Metering devices must be capable of indicating the maximum quantity and money values that can 

normally be expected in a particular application.

2.1. Minimum quantity value indications.

2.1.1. Display is capable of 1 Yes  No  N/A 

2.1.2. Display is capable of 0.1 Yes  No  N/A 

2.1.3. Display is capable of 0.01 Yes  No  N/A 

2.1.4. Display is capable of 0.001 Yes  No  N/A 

2.1.5. Display is capable of other (fill 

in blank): needs comment 

section

2.2. Money value display. .

2.2.1. a. Money value is properly displayed and verify rounding

b. Verify the presents of currency symbol i.e. dollar sign “$” 

or “Dollars” Yes  No  N/A 

Yes  No  N/A 

3.2. The indications must be clear, definite, and accurate.

2.2.1. Values must be clear, definite, and accurate Yes  No  N/A 

2.2.2. Unit of measure is programmable Gallon, Liter, Pound Yes  No  N/A 

2.2.2. Unit of measure is applied by permanent marking on indicator 

housing

Yes  No  N/A 

2.3. The indications must be easily read under normal operating conditions. Yes  No  N/A 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1)

NTEP - D / A4 

2.4. Symbols for decimal points shall clearly identify the decimal position. 

(Generally acceptable symbols are dots, small commas, or x.)

Yes  No  N/A 

2.5. The zero indication must consist of at least the following minimum 

indications as appropriate:

2.5.1. One digit to the left and all digits to the right of a decimal point. Yes  No  N/A 

2.5.2. If a decimal point is not used, at least one active decade must be 

displayed.

Yes  No  N/A 

2.6. Totalizer values must be accurate to the nearest minimum interval with decimal 

points displayed or subordinate digits adequately differentiated from others, if 

applicable.

Yes  No  N/A 

Code Reference: G-S.5.2.2. Digital Indication and Representation

Basic operating requirements for devices:

2.7. All digital values of like value in a system shall agree with one another. Yes  No  N/A 

2.8. A digital value coincides with its associated analog value to the nearest 

minimum graduation.

Yes  No  N/A 

2.9. Digital values shall round off to the nearest minimum unit that can be indicated 

or recorded.

Yes  No  N/A 

2.10. When a digital zero display is provided, the zero indication shall consist of at 

least one digit to the left and all digits to the right of the decimal point.

Yes  No  N/A 

Agreement of indications shall be checked for several deliveries. The totalizer shall be checked for accuracy 

and agreement with individual deliveries and with other totalizers in the system. 

2.11. All digital values of like value in a system agree with one another. Yes  No  N/A 

2.12. Digital values coincide with associated analog values to the nearest minimum 

graduation. 

Yes  No  N/A 

2.13. Digital values “round off” to the nearest minimum unit that can be indicated or 

recorded.

Yes  No  N/A 

2.14. The device totalizer shall agree with the total of the individual deliveries and 

with other totalizers in the system.

Yes  No  N/A 

Code Reference: G-S.5.2.3. Size and Character

Digits used for comparable values must be uniform in size and character, but subordinate values may be displayed 

in different and less prominent digits than more significant values. The latter more likely occurs on analog devices. 

In digital indications, the digits are usually of uniform size throughout a particular display. The size of digits may 

differ for different quantities, for example, the quantity and unit price digits may be smaller than the total price 

digits.

2.15. Yes  No  N/A 

2.16. Indications and recorded representations shall be appropriately portrayed or 

designated.

Yes  No  N/A 

Code Reference: G-S.5.2.4. Values Defined

2.17. Values shall be adequately defined by a sufficient number of figures, words, 

symbols, or combinations, which are uniformly placed so that they do not 

interfere with the accuracy of the reading.

Yes  No  N/A 

Code Reference: G-S.5.2.5. Permanence

2.18. Indications, or recorded representations and their defining figures, words, and 

symbols shall be of such character that they will not tend to easily become 

obliterated or illegible. What permanence quantities should be verified for 

electronic devices with graphical displays?

Yes  No  N/A 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1) 

NTEP - D / A5 

Code Reference: G-S.5.3., G-S.5.3.1. Values of Graduated Intervals or Increments

2.19. Digital indications, and recorded representations shall be uniform in size, 

character, and value throughout any series. Quantity values shall be defined by 

the specific unit of measure in use.

Yes  No  N/A 

2.20. Indications shall be uniform throughout any series. Yes  No  N/A 

2.21. Quantity values shall be identified by the unit of measure. Yes  No  N/A 

Code Reference: G-S.5.4. Repeatability of Indications

The quantity measured by a device shall be repeatable within tolerance for the same indication. One condition that 

may create a problem is that the value of the quantity division may be large relative to the tolerance. A delivery 

must be within tolerance wherever the delivery is stopped within the nominal indication of the test draft. Meters 

that may be at the tolerance limit may be out of tolerance at an extreme limit of the nominal quantity indication.

2.22. When a digital indicator is tested, the delivered quantity shall be within 

tolerance at any point within the quantity-value division for the test draft.

Yes  No  N/A 

Code Reference: G-S.5.6. Recorded Representations

2.23. All recorded values shall be digital. (See also G-UR.3.3.) Yes  No  N/A 

Code Reference: G-S.5.7. Magnified Graduations and Indications

2.24. Magnified indications shall conform to all requirements for graduations

and indications.

Code Reference: G-S.6. Marking, Operational Controls, Indications, and Features

All operational controls, indications, and features shall be clearly and definitely identified. Nonfunctional keys and 

annunciators shall not be marked because their marking implies that the key or annunciator is functional and should 

be inspected or tested by the enforcement official. Keys and operator controls that are visible to a customer in a 

direct sale transaction shall be marked with words or symbols to the extent that they can be understood by the 

customer and aid in understanding the transaction. Keys that are visible only to the console operator need to be 

marked only to the extent that a trained operator can understand the function of each key.

2.25. All operational controls, indications, and features including switches, lights, 

displays, and push buttons shall be clearly and definitely identified.

Yes  No  N/A 

2.26. All dual function (multi-function) keys or controls shall be marked to clearly 

identify all functions.

Yes  No  N/A 

2.27. Non-functional controls and annunciators shall not be marked (in the graphical 

display example they would be dimmed etc.)

Yes  No  N/A 

Code Reference: G-S.7. Lettering, Readability

2.28. Required markings and instructions shall be permanent and easily read. Yes  No  N/A 

Code Reference: G-S.8. Sealing Electronic Adjustable Components, and Provision for Sealing of Adjustable 

Components or Audit Trial

2.29. Electronic adjustable components that affect the performance of a device shall 

provide for an approved means of security (e.g. data change audit trail) or for 

physically applying a security seal. These components include the following: 

(1) mechanical adjustment mechanism for meters, (2) the electronic calibration 

factor and automatic temperature compensator for electronic meter registers, 

(3) selection of pressure for density correction capability and correction values, 

and 

Yes  No  N/A 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1)

NTEP - D / A6 

The following philosophy and list of sealable parameters applies to provision for sealing all liquid-measuring 

devices.

 

An electronic data audit trail is a means of allowing a weights and measures inspector to review how many times 

any electronic adjustment, which affects the accuracy of a volume measurement has been changed. The information 

contained in the audit trail shall consist of a cumulative and non-destructible number (even if a power failure 

occurs) which increments each time any of the adjustments required to be sealed have been changed. The electronic 

data audit trail information shall be capable of being recalled by the official on the main display of the device.

As a minimum, devices which use an audit trail to provide security for sealable parameters shall satisfy the 

following criteria and shall use the format set forth in Appendix A of the checklist for Liquid-Measuring 

Devices.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1) 

NTEP - D / A7 

Philosophy for Sealing

Typical Features to be Sealed

Principles for Determining Features to be Sealed

The need to seal some features depends upon:

• The ease with which the feature or the selection of the feature can be used to facilitate fraud; and

• The likelihood that the use of the feature will result in fraud not being detected.

Features or functions which the operator routinely uses as part of device operation, such as setting the unit prices on 

dispensers and maintaining unit prices in price look-up codes stored in memory, are not sealable parameters and 

shall not be sealed.

If a parameter (or set of parameters) selection would result in performance that would be obviously in error, such as 

the selection of parameters for different countries, then it is not necessary to seal the selection of these features.

If individual device characteristics are selectable from a “menu” or a series of programming steps, then access to the 

“programming mode” must be sealable. (Note: If an audit trail is the only means of security, then the audit trail 

shall update only after at least one sealable parameter has been changed; simply accessing the sealable parameters 

via a menu shall not update the audit trail.)

If a physical act, such as cutting a wire is required to change a parameter setting and physically repairing the cut is 

required to reactivate the parameter, then this physical repair process would be considered an acceptable way to 

select parameters without requiring a physical seal or an audit trail.

Typical Features and Parameters to be Sealed

The following provides examples of configuration and calibration parameters that are to be sealed. The examples 

are provided for guidance and are not intended to cover all possible parameters. 

Calibration Parameters: Calibration parameters are those parameters whose values are expected to change as a 

result of accuracy adjustments. Examples include the following.

1. Measuring element adjustments where linearity corrections are used (e.g., flow rate 1 and meter factor 1, flow 

rate 2 and meter factor 2, etc.).

2. Mass flow meter adjustments for zero adjustments (not simply setting the display to zero) and span settings.

Configuration Parameters: Configuration parameters are those parameters whose values are expected to be 

entered only once and not changed after all initial installation settings are made. Examples include the 

following.

1. Octane or other blend setting ratios 

2. Temperature, pressure, density, and other sensor settings for zero, span, and offset values

3. Measurement units 

4. Temperature compensation table, liquid coefficient of expansion, or compressibility factors or tables

5. Liquid density setting and allowable liquid density input range
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1)

NTEP - D / A8 

6. Vapor pressures of liquids if used in calculations to establish the quantity

7. Meter or sensor temperature compensation factors

8. On/off status of automatic temperature, pressure, or density correction

10. Automatic or manual data input for sensors

11. Filtering constants

Liquid-Measuring Device Features and Parameters

Typical Features or Parameters to be Sealed Typical Features or Parameters Not 

Required to be Sealed

Measuring element adjustment (both mechanical 

and electronic)

Analog-to-digital converters

Linearity correction values Quantity division value (display resolution)

Measurement units (e.g., gallons to liters) Double pulse counting

Octane blend setting for retail motor-fuel 

dispensers

Communications

Any tables or settings accessed by the software or 

manually entered to establish the quantity (e.g., 

specific gravity, pressure, etc.)

Density ranges

Pulsers

Signal pick-up (magnetic or reluctance)

Temperature probes and temperature offsets in 

software (S.2.5.4 VT)

Pressure and density sensors and transducers

Flow control setting (e.g., flow rates for slowflow start, quantity for slow-flow start and 

stop)

Temperature compensating systems (on/off)

Differential pressure valves

As a point of clarification, the flow control 

settings referenced above are those controls 

typically incorporated into the installations of 

large-capacity meters (wholesale meters). The 

reference does not include the point at which retail 

motor-fuel dispensers slow product flow during a 

prepaid transaction to enable the dispenser to stop 

at the preset amount.

Note: The above examples of adjustments, parameters, and features to be sealed are to be considered "typical" or 

“normal” This list may not be all inclusive. Some parameters other than those listed, which affect the metrological 

performance of the device, must be sealed. If listed parameters or other parameters, which may affect the 

metrological function of the device, are not sealed, the manufacturer must demonstrate that all settings comply with 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1) 

NTEP - D / A9 

the most stringent requirements for the application of the device (i.e., the parameter does not affect compliance with 

Handbook 44).

Category 1 Devices (Devices with No Remote Configuration Capability):

• The device is sealed with a physical seal or it has an audit trail with two event 

counters (one for calibration, the second for configuration).

Yes  No  N/A 

• A physical seal must be applied without exposing electronics. Yes  No  N/A 

• Event counters are non-resettable and have a capacity of at least 000 to 999. Yes  No  N/A 

• Event counters increment appropriately. Yes  No  N/A 

• The audit trail information must be capable of being retained in memory for at 

least 30 days while the device is without power.

Yes  No  N/A 

• Accessing the audit trail information for review shall be separate from the 

calibration mode.

Yes  No  N/A 

• Accessing the audit trail information must not affect the normal operation of the 

device.

Yes  No  N/A 

• Accessing the audit trail information shall not require removal of any additional 

parts other than normal requirements to inspect the integrity of a 

physical security seal. (e.g., a key to open a locked panel may be required).

Yes  No  N/A 

Category 2 Devices (Devices with Remote Configuration Capability but Controlled by 

Hardware):

• The physical hardware enabling access for remote communication must be onsite.

Yes  No  N/A 

• The physical hardware must be sealable with a security seal or Yes  No  N/A 

• The device must be equipped with at least two event counters: one for calibration, 

the second for configuration parameters

 - calibration parameters event counter

- configuration parameters event counter

Yes  No  N/A 

• Verify that all metrological relevant parameters are logged to Event Counter 

(S.2.2)

• Adequate provision must be made to apply a physical seal without exposing 

electronics.

Yes  No  N/A 

Yes  No  N/A 

• Event counters are non-resettable and have a capacity of at least 000 to 999. Yes  No  N/A 

• Event counters increment appropriately. Yes  No  N/A 

• Event counters may be located either: 

 - at the individual measuring device or

- at the system controller

Yes  No  N/A 

• If the counters are located at the system controller rather than at the individual 

device, means must be provided to generate a hard copy of the information 

through an on-site device. 

Yes  No  N/A 

• An adequate number (see table below) of event counters must be available to 

monitor the calibration and configuration parameters of each individual device.

Yes  No  N/A 

• The device must either:

 - clearly indicate when it is in the remote configuration mode or

- the device shall not operate while in the remote configuration mode.

Yes  No  N/A 

• If capable of printing in the calibration mode, it must print a message that it is in 

the calibration mode.

Yes  No  N/A 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1)

NTEP - D / A10

• The audit trail information must be capable of being retained in memory for at 

least 30 days while the device is without power.

Yes  No  N/A 

• The audit trail information must be readily accessible and easily read. Yes  No  N/A 

Minimum Number of Counters Required

Minimum Counters Required for 

Devices Equipped with Event 

Counters

Minimum Event Counter(s) 

at System Controller

Only one type of parameter 

accessible (calibration or 

configuration)

One (1) event counter One (1) event counter for each 

separately controlled device, or 

one (1) event counter, if changes 

are made simultaneously.

Both calibration and 

configuration parameters 

accessible

Two (2) event counters Two (2) event counters for each 

separately controlled device, or 

two (2) or more event counters if 

changes are made to all 

controlled devices 

simultaneously.

Category 3 Devices (Devices with Unlimited Remote Configuration Capability):

Category 3 devices have virtually unlimited access to sealable parameters or access is controlled though a password.

• the device must either:

- Clearly indicate when it is in the remote configuration mode, or 

- The device shall not operate while in the remote configuration mode

Yes  No  N/A 

• The device is equipped with an event logger Yes  No  N/A 

• Verify that all metrological relevant parameters are logged to Audit trail (S.2.2)

• The event logger automatically retains the identification of the parameter 

changed, the date and time of the change, and the new value of the parameter.

Yes  No  N/A 

Yes  No  N/A 

• Event counters are nonresettable and have a capacity of at least 000 to 999. Yes  No  N/A 

• The system is designed to attach a printer, or other communications device (i.e. 

Ethernet, Serial Communications, USB, Wi-Fi, Bluetooth etc) which will allow 

an interface to a printer or allow for the creation of a digital copy (file) for future 

reference 

Yes  No  N/A 

• The audit trail information must be capable of being retained in memory for at 

least 30 days while the device is without power.

Yes  No  N/A 

• The event logger must have a capacity to retain records equal to ten times the 

number of sealable parameters in the device, but not more than 1000 records are 

required.

Yes  No  N/A 

• The event logger drops the oldest event when the memory capacity is full and a 

new entry is saved.

Yes  No  N/A 

• Describe the method used to seal the device or access the audit trail information.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1) 

NTEP - D / A11

Code Reference: G-UR.1.1. Suitability of Equipment

A register / indicator must be properly designed and have sufficient capacity to be suitable to use in a particular 

application. A register / indicator must measure the appropriate characteristics of a commodity to accurately 

determine the quantity, , have sufficient capacity to indicate the quantity measured and the associated total price if it 

is a computing device. The register/ indicator must have the proper capacity to operate over the actual frequency 

range for the application, and the device must have a quantity division appropriate for the application. 

2.24. The equipment is suitable for its intended application. Remove? Yes  No  N/A 

. Compliance to this requirement is determined by the permanence test. Unless 

specific tests are developed this has no meaning! AK_ RM - Agreed

2.26. Simulator tests: All tests shall have a minimum of 10,000 pulses applied to the device for 

each test. Test with a minimum of two API/Density settings. Is this appropriate for all 

indicator technologies PD, Mass, Mag, etc? AK RM – Yes as this is a check list for a register / 

indicator it shall be compatible for all measurement technologies.

Notes, items that need to be added to table / Checklist:

a. Information needs to be added to capture different K-Factor values 

b. All API tables to be included on certificate shall be verified

c. Verify extreme endpoints and a center point of each table

Product: Meter Factor: K Factor:

1 Test with liquid temperature between 55 °F to

65 °F at the manufactures rated maximum 

frequency/pulse rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 

2 Test with liquid temperature between 55 °F to 

65 °F at manufactures rated minimum 

frequency/pulse rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 

3 Test with liquid temperature below 35 °F at 

manufactures rated maximum frequency/pulse 

rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 

4 Test with liquid temperature below 35 °F at 

manufactures rated minimum frequency/pulse 

rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 

5 Test with liquid temperature above 100 °F at 

manufactures rated maximum frequency/pulse 

rate.

API Gravity: 

Temperature: 

Yes  No  N/A 

6 Test with liquid temperature above 100 °F at 

manufactures rated minimum frequency/pulse 

rate.

API Gravity: This way or

Temperature: 

Yes  No  N/A 

7 Test with liquid temperature between 55 °F to

65 °F at the manufactures rated maximum 

frequency/pulse rate.

API Gravity/Density: This 

way 

Temperature: 

Yes  No  N/A 

8 Test with liquid temperature between 55 °F to 

65 °F at manufactures rated minimum 

frequency/pulse rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix A – Checklist for Testing Electronic Digital Indicators w/Simulated Inputs (Agenda Item 1)

NTEP - D / A12

9 Test with liquid temperature below 35 °F at 

manufactures rated maximum frequency/pulse 

rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 

10 Test with liquid temperature below 35 °F at 

manufactures rated minimum frequency/pulse 

rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 

11 Test with liquid temperature above 100 °F at 

manufactures rated maximum frequency/pulse 

rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 

12 Test with liquid temperature above 100 °F at 

manufactures rated minimum frequency/pulse 

rate.

API Gravity/Density: 

Temperature: 

Yes  No  N/A 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix B – Permanence of Markings, LMD Checklist (Agenda Item 2)

NTEP - D / B1 

Appendix D/Sub-Appendix B 

National Type Evaluation Program

Permanence of Markings, LMD Checklist

(Agenda Item 2) 

1. General

Code Reference: G-S.1. Identification

Virtually all weighing and measuring equipment must be clearly and permanently marked with, or display, the 

manufacturer's name or trademark, model designation, and serial number. Service station dispensers, 

consoles, cash registers interfaced with dispensers, retrofit computing registers, and customer card-activated 

terminals must all have these markings.

Marking of Serial Number:

As a practical matter, some equipment need not have a serial number. "Satellite" modules in a modular system 

(e.g., keyboard module and cash drawer) need not have serial numbers because they do not have any 

“intelligence.” A serial number is required in the following circumstances:

Separate Device

A device is capable of operating as a weighing or measuring device without interfacing with or connecting to 

other components.

Separate Main Element

Primary indicating elements must be marked. The device is a major element in the weighing or measuring 

system, which means, it is metrologically significant to the operation and/or performance of the system and 

interfaces with different compatible main elements. Examples include the following: indicating elements, 

weighing elements, meter registers, meter measuring elements (vehicle tank meters and loading rack meters.)

Component

The device is a component in a system, may be used in different models of devices, and is sufficiently 

complex to warrant a separate evaluation and a separate CC (e.g., load cells and vapor recovery nozzles.) 

Such a device may or may not be placed into an enclosure with other components of the system. When 

installed in an enclosure, the complete device must be marked with a serial number, and the one serial number 

will suffice for the entire collection of components. If not placed in an enclosure with other components, the 

component must be marked with a serial number.

The following are examples of the application of these criteria:

Retail Motor Fuel Dispensers:

• Whole unit requires a serial number.

• Indicating elements do not require a separate serial number.

• Measuring element does not require a separate serial number.

• The measuring element is metrologically significant because it affects the operation of the system as a 

whole; however, it is always enclosed in a housing, which has a S/N for the whole device.

Note: A conventional nozzle on a retail motor fuel dispenser is not a sufficiently complex device to warrant a 

special type evaluation or a serial number. The nozzle does not affect the accuracy of the delivery. A separate 

requirement addresses the anti-drain valve. A vapor recovery nozzle does warrant a separate evaluation 

because it is a complex device, and it does have the potential to affect the accuracy of the device during the 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix B – Permanence of Markings, LMD Checklist (Agenda Item 2)

NTEP - D / B2 

normal operation of the device. One model of vapor recovery nozzle can be used on many models of 

dispensers. The proper operation of a vapor recovery nozzle and system is "important" as defined by federal 

regulations. Thus, it is reasonable to require a vapor recovery nozzle to be marked with a serial number.

Vehicle Tank Meters

• Serial number is required on the meter; it is a major component of the system since it is required for the 

system to operate.

• Serial number is required on the indicating elements.

Equipment must be marked on a surface that is an integral part of the device, and the marking must be visible 

after installation. If the required information is not positioned in a visible location after installation, a 

duplicate, permanent identification badge must be located in a visible location after installation. A removable 

cover is an acceptable location for the required information only if a permanent ID badge is located elsewhere 

on the device.

The information may be on a metal or plastic plate that is attached with pop rivets, adhesive, or other means, 

but removable bolts or screws are not permitted. A foil or vinyl badge may be used provided that it is able to 

survive wear and tear, remains legible, and is difficult to remove. The printing on a foil badge must be easily 

readable and not easily obliterated by rubbing with a relatively soft object (e.g., the wood of a pencil.)

Location of the information: 

Required Markings:

All equipment shall be clearly and permanently marked on an exterior surface 

that is visible after installation with the following information (prefix lettering 

may be initial capitals, all capitals, or all lower case):

1.1. The name, initials, or trademark of the manufacturer or distributor. Yes No N/A

1.2. A model identifier that positively identifies the pattern or design of the 

device. The model identifier shall be prefaced by the word “Model,” 

“Type,” or “Pattern.” These terms may be followed by the word 

“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.” Prefix 

lettering may be initial capitals, all capitals, or all lower case.

Yes No N/A

1.3. Except for equipment with no moving or electronic component parts and not 

built for purpose, software-based devices, a non-repetitive serial number. 

The serial number shall be prefaced by the words “Serial Number” or an 

abbreviation, or a symbol, that clearly identifies the number as the required 

serial number. 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.)

Yes No N/A

1.4. For not built-for-purpose, software based devices the current software 

version designation. The version or revision identifier shall be prefaced by 

the word “Version” or “Revision” as appropriate and either word may be 

followed by the word “Number.” The abbreviations for the word 

“Version” shall, as a minimum, begin with the letter “V.” Abbreviations 

for the word “Revision” shall, as a minimum, begin with the letter “R.” 

The abbreviations for the word “Number” shall, as a minimum, begin with 

the letter “N” (e.g., No or No.)

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix B – Permanence of Markings, LMD Checklist (Agenda Item 2)

NTEP - D / B3 

Location and Visibility of Marking Information: 

Required information shall be clearly and permanently marked on an exterior surface that is visible after 

installation as follows:

1.5. Equipment must be marked on a surface that is an integral part of the 

device. 

Location of Marking Information:________________________________

Yes No N/A

1.6. Markings must be visible after installation. If the required information is 

not positioned in a visible location after installation, a duplicate, 

permanent identification badge must be located in a visible location after 

installation. A removable cover is an acceptable location for the required 

information only if a permanent ID badge is located elsewhere on the 

device.

Yes No N/A

Permanence of Marking Information:

“Permanent” markings address two aspects: (1) if the markings are on a plate or badge, then the 

marking badge must be “permanently” attached to the device, and (2) the printed information will 

withstand wear and cleaning. 

The identification marking must be permanent, able to survive normal wear and tear, and remain 

legible. If located on a metal or plastic plate or badge, it must be attached with pop rivets or 

adhesive, or equivalent permanent means; removable bolts or screws are not permitted. A foil 

badge is permitted provided that it is durable, is able to survive wear and tear, remains legible, is 

difficult to remove, and exhibits obvious evidence of an attempt to remove the marking or badge. 

The printing on a foil badge must be easily readable and not easily obliterated by rubbing with a 

relatively soft object (e.g., the wood of a pencil).

Permanence of Attachment of Badge:

1.7. Attempt to remove the badge by pulling it off or prying off a metal badge 

that is attached using only adhesive; removal must be "difficult" at all 

temperatures. If the badge can be removed, it must show obvious evidence 

that the badge was removed. Acceptable indications are destruction of the 

badge by tearing, permanent and extensive wrinkling, or repeated 

exposure of the word "VOID" upon removal of the badge.

If required markings are behind a door or panel, the manufacturer is 

encouraged to put a label on the outside of the device that explains where 

the ID information is located. 

Yes No N/A

1.8. If the information required by G-S.1. is placed on a badge or plate, the 

badge or plate must be permanently attached to the device. See 

criteria above for permanence of Attachment of Badge.

Yes No N/A

1.9. If the markings for other than device identification required by G-S.1. 

is placed on badge or decal, then the badge or decal must be durable 

(difficult to remove at all temperatures.)

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix B – Permanence of Markings, LMD Checklist (Agenda Item 2)

NTEP - D / B4 

Permanence of Lettering:

The following test procedure shall be used to determine the permanence of the identification 

markings. The lettering for the markings is subjected to the following tests to simulated 

accelerated wear. The markings are then compared with a typical set of labels exhibiting various 

degrees of wear, graded from minimal effect (7) to excessive unacceptable wear (1).

Attempts are made to remove the marked information whether on a badge (plate) or on the device 

itself, using the following means.

• Rub over one letter of the marking at least 20 times using an ink eraser in the same 

manner and force as one would normally exert while erasing an inscription written with a 

ball point pen.

• Note: For consistency of application, all NTEP labs use Eberhard Faber ink eraser type #110

• Clean the marking or badge with the following cleaners presumed to be “readily 

available.” 

Marking information remains legible after following the above procedures using:

1.10. Disinfecting cleaning liquid and a damp cloth. Yes No N/A

1.11. “Soft” household cleaning powder and a damp cloth. Yes No N/A

1.12. Window cleaning fluids and a damp cloth. Yes No N/A

Note: For consistency of application, NTEP labs use “409,” Bon Ami, and Windex brands of products for 

tests in parts 1.8, 1.9, and 1.10 respectively.

Code Reference: G-S.1. (e)

1.13. An NTEP Certificate of Conformance (CC) Number or a corresponding CC 

addendum number for devices that have (or will have) a CC. The number 

shall be prefaced by the terms “NTEP CC,” “CC,” or “Approval.” These 

terms may be followed by the word “Number” or an abbreviation for the 

word “Number.” The abbreviation for the word “Number” shall as a 

minimum begin with the letter “N” (e.g., No or No.)

Yes No N/A

The device must have an area, either on the identification plate or on the 

device itself, suitable for the application of the Certificate of 

Conformance Number. If the area for the CC number is not part of an 

identification plate, then note its intended location below and how it will 

be applied.

1.13.1. Location of CC Number if not located with the identification 

information: 

 

Code Reference: G-S.1.1. Location of Marking Information for Not Builtfor-Purpose, Software-Based Devices

1.14. For not built-for-purpose, software-based devices the following shall apply:

1.14.1. The required information in G-S.1 Identification. (a), (b), (d), and 

(e) shall be permanently marked or continuously displayed on 

the device. OR

Yes No N/A

1.14.2. The Certificate of Conformance Number shall be:
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix B – Permanence of Markings, LMD Checklist (Agenda Item 2)

NTEP - D / B5 

1.14.2.1. Permanently marked on the device. OR Yes No N/A

1.14.2.2. Continuously displayed. OR Yes No N/A

1.14.2.3. Accessible through an easily recognized menu and, if 

necessary, a submenu. Examples of menu and 

submenu identification include, but are not limited to 

“Help,” “System Identification,” “G S.1. 

Identification,” or “Weights and Measures 

Identification.” 

Yes No N/A

Note: For (1.6.2.), clear instructions for accessing the information required in 

G-S.1. (a), (b), and (d) shall be listed on the CC, including information 

necessary to identify that the software in the device is the same type that was 

evaluated.

1.15. The identification badge must be visible after installation. Yes No N/A

1.16. The identification badge must be permanent. Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix B – Permanence of Markings, LMD Checklist (Agenda Item 2)

NTEP - D / B6 

THIS PAGE INTENTIONALLY LEFT BLANK
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix C – Excerpt from NCWM S&T Committee 2013 Annual Report (Agenda Item 3)

NTEP - D / C1 

Appendix D/Sub-Appendix C 

National Type Evaluation Program 

Excerpt from NCWM Specifications and Tolerances Committee

2013 Annual Report 

(Agenda Item 3) 

330-3 I N.4.2.4. Wholesale Devices

(The status of this item was changed from Voting to Informational.) 

Source: 

Flint Hills Resources (2013)

Purpose: 

To better align wholesale meter testing with current testing procedures, measuring practices and technology changes 

while maintaining the integrity of the special test.

Item Under Consideration: 

Amend paragraph N.4.2.4. as follows:

N.4.2.4. Wholesale Devices. – “Special” tests shall be made to develop the operating characteristics of a 

measuring system and any special associated or attached elements and accessories.

N.4.2.4.1. Special Test, Type Evaluation. – “Special” tests shall be made during type evaluation

include a test at the slower of the following rates:

(a) 20 % of the marked maximum discharge rate; or

(b) The minimum discharge rate marked on the device. 

Add a new paragraph N.4.2.4.2. as follows:

N.4.2.4.2. Special Test, Field Evaluation. – “Special” tests shall be made during field tests at or 

near the minimum discharge flow rate developed under the conditions of installation, but not less 

than the minimum discharge rate marked on the device. 

Background/Discussion: 

This proposal is intended to clarify that conducting a slow flow test to the marked minimum discharge rate is 

required for type evaluation and testing to the minimum discharge flow rate developed under the conditions of 

installation for routine field inspections is appropriate. It would:

1) Remove the rigidity of the current language and provide for flexibility and efficiency while maintaining the 

requirement to test at different flow rates to determine the accuracy of a measuring system;

2) Differentiate between testing for type evaluation and field verification;

3) Reflect changes in field testing procedures, technology, and industry practices; and

4) Improve meter performance by establishing a meter factor for the slowest preset flow rate. 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-appendix C – Excerpt from NCWM S&T Committee 2013 Annual Report (Agenda Item 3)

NTEP - D / C2 

The current language is very rigid and does not take field installation conditions into consideration. It may not be 

possible or practicable to achieve the marked minimum discharge rate during field tests without changes to upstream 

equipment (valves, pumps, etc.), changing the flow computer programmed presets, or changing the idling of other 

fueling bays during testing. 

The Code does not allow for any deviation from the “shall” test at the marked minimum discharge rate. Current 

loading rack systems generally do not have a discharge nozzle or other physical means downstream of the meter to 

control or restrict the flow rate. Today, most rely on pumps and valves upstream of the meter and preprogrammed 

flow rates for specific products with an assigned meter factor for each flow rate and product. The proposed change 

would still allow for testing at the marked minimum discharge rate when there is a discharge nozzle or other 

physical means in use downstream of the meter to restrict flow, but would recognize the need to vary from the 

marked minimum discharge rate for systems not so equipped. 

The submitter notes that it is more productive to verify that the system is operating properly when used in its 

intended manner and set-up rather than alter the system for test-purposes and then return it to its “as-used 

condition.” Adjusting the system to flow at the marked minimum discharge rate by making changes to the system 

when that flow rate is not used introduces variables into the system not normally seen and adds little to no value. 

Even if the system can achieve the marked minimum discharge rate (for example, through the use of a discharge 

nozzle), it is not always practical or possible to hit it exactly when testing. The variables involved with proving 

while multiple bays are operating at a loading rack can make achieving the target flow rate difficult. It is not really 

necessary to test exactly at the marked minimum flow rate to develop the operating characteristics of a meter. 

However, NIST Handbook 44 offers no room for deviation. Today, a wholesale meter tested “near,” but not exactly 

“at,” the marked minimum discharge rate is not being tested in accordance with the requirements of NIST 

Handbook 44. This problem may never be an issue, but it might (the history regarding the change to NIST 

Handbook 44 Introduction section illustrates why the language in the handbook must match the application of it in 

the field). Amending the current language as proposed will remove this risk, however, slight.

In the LMD Code, retail motor-fuel devices with a marked minimum flow rate are tested “at or near the marked 

minimum flow rate,” but are not required to be tested at exactly the marked minimum. If this is acceptable for a

retail motor-fuel dispenser then it should be acceptable for a wholesale meter. The proposal would make testing 

more uniform and consistent among different, but similar device types.

The purpose of this proposal is not to do away with a special test, but to make the test more reasonable. The 

proposal would allow the integrity of the test process to be maintained while providing both industry technicians and 

weights and measures officials the flexibility to test the meter in a manner that is more reflective of actual field 

testing and device use. It is designed to test meters not at the design flow rate, but at the flow rate at which they are 

actually used. It does not preclude a weights and measures inspector from testing at the marked minimum flow rate; 

it just removes the mandate to conduct it at that flow rate

The submitter points out the following supporting arguments: 

• The marked minimum and maximum discharge rates are design parameters, not operational parameters.

• The Mass Flow Meters Code does not require testing at the marked minimum discharge rate. It requires, at 

a minimum, that one test be conducted at the minimum flow rate of the installation.

• The principle of testing as used and not to the design parameters is present in other codes and testing. It 

exists for scales since scales are not required to be tested to their design parameters; they are only tested as 

set up and used. A scale may be rated at a capacity range of 100 000 lb to 200 000 lb and a scale division of 

20 lb or 50 lb, but it will only be tested based on its conditions of installation regardless of how it could be 

used.

• NIST Handbook 44 does not require that a measuring system be tested at the marked maximum discharge 

rate because it recognizes the measuring system may not be able to achieve the marked maximum 

discharge rate due to the conditions of installation. 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix C – Excerpt from NCWM S&T Committee 2013 Annual Report (Agenda Item 3)

NTEP - D / C3 

• There is no regulation requiring a meter to be able to discharge at its marked minimum discharge flow rate; 

the marked minimum discharge flow rate is a design parameter not a use requirement.

• Not all tests in the test notes section are required to be conducted in the field as is noted in NIST 

Handbook 44 Introduction Section S. Using the Handbook, which states: “Since some sections are 

designed to be applied to tests performed under laboratory conditions, it would be impractical or unrealistic 

to apply them to field tests. Not all tests described in the “Notes” section of the handbook are required to 

be performed in the field as an official test.” Based on this section, it could be argued that a “special” test 

is not even required; however, the submitter believes that the special test has value and is not seeking to 

eliminate the test entirely.

The proposal doesn’t specify the exact flow rate, but requires a test at the minimum flow rate based on the system 

and the establishment of a meter factor at that flow rate. The added flexibility and establishment of a meter factor 

during the test is important for both industry technicians and weights and measures officials.

The proposed change is similar to the recommended tests described in API Manual of Petroleum Measurement 

Standards (MPMS) Chapter 6.2 Loading Rack Metering Systems - “When using electronic presets with multiple 

flow rate configurations, the establishment of multiple meter factors may be required. This is particularly true when 

low flow start-up and shutdown sequences are employed to prevent system shock and static electricity generation 

(see API RP 2003).”

A potential argument in opposition to the proposal is that, even if the system is not being used at the marked 

minimum discharge rate at the time of test, it could be used later; thus, it is important to not only test as found, but as 

it could be used. While there is some merit to this argument, it is not consistently applied since many systems are 

tested as found, not as they could be used. There is also no incentive for a fuel terminal to not test their system as 

used. Further, the current practice is to set a calibration factor for all flow rates, so it is unlikely that the system 

would be changed after testing without additional testing and establishment of a calibration factor.

Based on comments received at its 2012 Interim Meeting, the CWMA amended the original proposal to reflect 

language that was applicable to field practices and current with technology. The language was also amended to 

maintain special tests as a requirement during type evaluation, but optional for other examinations. CWMA 

supported the item as amended and forwarded the item to NCWM, recommending it as a Voting Item. The proposal 

submitted by the CWMA is as follows:

N.4.2.4. Wholesale Devices. – “Special” tests shall be made during type evaluation to develop the 

operating characteristics of a measuring system and any special associated or attached elements and accessories. 

“Special” tests shall include a test at the slower of the following rates:

(a) 20 % of the marked maximum discharge rate; or

(b) The minimum discharge rate marked on the device. 

N.4.2.5. Wholesale Devices; Other Tests. – Other tests may be made during field tests at or near the 

minimum discharge flow rate developed under the conditions of installation for all wholesale devices. 

(a) For devices equipped with electronic preset flow rates, tests may be conducted at any electronic 

preset flow rate used, including the slowest flow rate, when multiple flow rate configurations 

are used to deliver product.

(b) “Normal” applicable tolerances shall apply to tests conducted.

U.R.3.6.4. Wholesale Devices; Electronic Preset Flow Rates – A meter factor shall be established for all 

electronic preset flow rates used to deliver product.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-appendix C – Excerpt from NCWM S&T Committee 2013 Annual Report (Agenda Item 3)

NTEP - D / C4 

At the 2013 NCWM Interim Meeting, the Committee heard comments from Mr. Ross Andersen (retired New York) 

who suggested that, if the concern is that there is not enough flexibility in the reference to “20 % of the marked 

maximum,” the focus should be placed on modifying this reference rather than making other proposed changes. He 

provided alternative language for the Committee to consider. The Committee also received written and verbal 

comments from NIST, OWM noting that the proposed language would not consider any test conducted at lower 

flow rates to be “normal” tests and, therefore, such tests would be required to meet “normal” test tolerances. 

OWM commented that it is important to verify the performance of a meter over the range of flow rates for which it 

is designed to operate. The “normal” test (as described in N.4.1. Normal Tests.) combined with a “slow flow” test 

(as described in N.4.2.4. Wholesale Devices) allows an inspector or serviceperson to verify the performance of a 

meter over the range in which it is typically used under the conditions of its installation. For positive displacement 

meters with single point calibration, the results of both tests can be used to determine whether or not a particular 

meter is providing accurate measurement over the complete range of operating speeds associated with its installation 

and whether the meter is in good operating condition. Product discharge rates are affected by installation 

particulars, (e.g., the diameter of the piping, pump speed, etc.) and these can be changed after installation, thus, 

affecting meter performance. For these reasons, NIST, OWM recommends the slow flow test remain a required part 

of an official test as was originally intended by the original submitter of this item. As a general rule, NIST, OWM 

recommends that test procedures considered part of an official examination of a commercial weighing or measuring 

device not be made elective because, as such, they create the potential for inconsistent enforcement of legal 

requirements amongst weights and measures jurisdictions. 

The proposed new paragraph N.4.2.5. Wholesale Devices; Other Tests. allows for a test at the minimum discharge 

rate marked on the device but would have the effect of eliminating the application of the “Special Test” tolerance, 

which currently applies to the results of a test conducted at flow rates below a certain point. Since the test would no 

longer be considered a “Special Test,” basic tolerances (i.e., 0.3 % maintenance and 0.2 % acceptance) would apply 

and these tolerances are more stringent than the current “Special Test” tolerance of 0.5 % specified in NIST 

Handbook 44. NIST, OWM is concerned about the impact this change may have on existing in-service wholesale 

equipment that might currently be able to comply with the “Special Test” tolerance, but may not be able to comply if 

that tolerance were tightened. For example, in instances where the minimum discharge flow rate developed under 

the conditions of installation (i.e., the test condition specified in proposed new paragraph N.4.2.5.Wholesale 

Devices; Other Tests.) for a wholesale device already in service, is equivalent to the lesser of the two rates specified 

in N.4.2.4., the flow rate for the test, whether applying proposed paragraph N.4.2.5. or existing paragraph N.4.2.4., 

would be the same, yet a more stringent tolerance would apply under proposed paragraph N.4.2.5. 

An additional concern is that if the parameters of the test were changed from those currently specified in (a) and (b) 

of paragraph N.4.2.4. to the proposed “at or near the minimum discharge flow rate developed under the conditions 

of installation” the change would provide device owners the latitude of being able to try and extend the service life 

of a meter by compensating for badly worn or otherwise defective parts simply by increasing the minimum flow rate 

of product through it. Although such action would constitute a violation of G-UR.4.3. Use of Adjustments, it might 

be very difficult for officials to recognize and enforce. 

For these reasons, NIST, OWM proposed alternate language (which combines elements of the original proposal and 

the CWMA alternative) as a means to provide more flexibility in conducting special tests, while retaining the 

original intent of the special test as a tool for verifying the condition of the meter.

NIST, OWM also commented that additional work is needed to develop minimum testing requirements for 

equipment with multi-point calibration capability to ensure consistency in inspection and testing of these systems.

Mr. Henry Oppermann (Weights and Measures Consulting) echoed NIST, OWM’s concerns regarding the need to 

conduct special tests as a means to assess the condition of the meter. He acknowledged that the current language in

NIST Handbook 44 may not provide the same flexibility that is provided for other meter types (for which tests can 

be “at or near” the marked minimum); however, he expressed concern about backing off of a proper test for what 

appears to be primarily convenience. Mr. Constantine Cotsoradis (Flint Hills Resources) pointed out that with many 

current systems; there frequently is not a way to restrict the flow rate. Mr. Richard Suiter (Richard Suiter 

Consulting) further commented that the location where flow is restricted (e.g., before vs. after the meter) during 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix C – Excerpt from NCWM S&T Committee 2013 Annual Report (Agenda Item 3)

NTEP - D / C5 

special tests can also affect the results of testing, and this should be considered in constructing the final language 

(and associated test procedures) for any proposed change.

Mr. Dmitri Karimov (Liquid Controls Corporation, LLC), speaking on behalf of the MMA, noted that the proposal 

has the effect of (1) providing some flexibility in establishing a flow rate near the marked minimum flow rate rather 

than at the minimum; (2) changing the tolerances that would apply to tests conducted at slower flow rates; and (3) 

specifying the establishment of meter factors for preset flow rates. Of these three facets, MMA only supports the 

first. He noted that some registers may use different types of calibration factors and addressing these variations in a 

single paragraph would be difficult. He further noted that, if changes are made to the test conditions in the LMD 

Code, similar changes should be made to other measuring codes as needed to ensure consistency.

Ms. Julie Quinn (Minnesota) noted that Minnesota believes that it is necessary to conduct testing at every flow rate 

where the device is configured; however, the factors at these various points do not need to be different.

The Committee acknowledged the comments in support of maintaining the requirement for conducting special tests 

during routine field inspections, but modifying paragraph N.4.2.4. to provide for some flexibility in the rate at which 

a special test is conducted. In recognition of limitations which may prevent some systems from being tested exactly 

at the marked minimum flow rate, the Committee agreed that modification to the language to be more consistent 

with other measuring devices is appropriate. Based on the support heard for the language proposed by NIST, OWM 

with respect to N.4.2.4.1. Special Test, Type Evaluation and N.4.2.4.2.Special Tests, Field Evaluation, the 

Committee agreed to recommend this alternative language as shown in the Item Under Consideration above for a 

Vote.

In reviewing the remaining portion of the proposed changes, the Committee noted the considerable debate regarding 

the inclusion of the User Requirement regarding the establishment of meter factors for preset flow rates. Based on 

this opposition, the Committee considered splitting this proposal into two items: one item to address the proposed 

changes to the Notes and a second item to address the proposed changes to the User Requirements. However, there 

was very limited support for the proposed changes to the User Requirement. Thus, the Committee decided to 

eliminate the proposed paragraph U.R.3.6.4 Wholesale Devices; Electronic Preset Flow Rates from the Item Under 

Consideration.

At their 2013 Annual Meetings, NEWMA and the CWMA supported the item as a Voting Item and commented that 

they believe the concerns stated by NIST, OWM and others at the NCWM Interim meeting have been sufficiently 

addressed by the NCWM S&T Committee.

Two Government representatives indicated a position of support on the NCWM Online Position Forum. Another 

Government representative, Mr. Randy Jennings (Tennessee) indicated opposition to the proposal and, noting that 

the item appeared on only one regional weights and measures association agenda, expressed concern that the item 

requires more vetting. Mr. Jennings expressed concern about the phrase “developed under the conditions of the 

installation,” and noted that this may be interpreted to mean that, if a system can be installed to run at maximum 

flow rates other than “start-up” and “shut-down,” then an official cannot request that the system be “chocked” to 

reduce the flow. He further commented that the reduced flow test has always been effective in detecting and 

diagnosing wear in the meter. He also noted that Tennessee has a valve on its prover that can be used to reduce the 

flow rate during a slow flow test. Mr. Jennings proposed the following alternative changes to paragraph 

N.4.2.4.1. Special Test, Type Evaluation which would make the current requirement less restrictive, yet achieve a 

compromise to help all stakeholders:

N.4.2.4.1. Special Test, Type Evaluation. – “Special” tests shall include a test at the slower of the 

following rates:

(a) Approximately 20 % of the marked maximum discharge rate; or

(b) The approximate minimum discharge rate marked on the device.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-appendix C – Excerpt from NCWM S&T Committee 2013 Annual Report (Agenda Item 3)

NTEP - D / C6 

During its Open Hearings at the 2013 Annual Meeting, the Committee received a proposed modification to the Item 

Under Consideration by the original submitter Mr. Cotsoradis. In addition to the other changes proposed in the Item 

Under Consideration, Mr. Cotsoradis proposed replacing the new paragraph N.4.2.4.2. with the following:

N.4.2.4.2. Special Test, Field Evaluation. – A “Special” test shall be made during field tests at or near 

the minimum discharge flow rate developed under the conditions of installation, but not less than the 

minimum discharge rate marked on the device. Additional “Special” tests may be conducted at flow 

rates down to and including the maximum discharge rate marked on the device.

Mr. Jennings supported this proposed modification by Mr. Cotsoradis.

Mr. Cotsoradis further noted that the current language in NIST Handbook 44 is very restrictive. Even in systems 

where the flow can be reduced, it is difficult to set the flow and maintain it at the target flow rate over the course of 

an entire test.

NIST, OWM noted that, according to the 1949 NCWM S&T Committee Report, requirements to conduct “Special 

Tests” were established in 1949. The report states that “Special” tests are not defined in detail except that such tests 

shall include tests at specified minimum discharge rates; other details of “Special” tests are left to the judgment of

the official. The primary purpose of the “Special” test is to determine the condition of the meter and determine 

whether or not the user is maintaining the equipment in proper operating condition. As noted in comments during 

the 2013 Interim Meeting, the results of a “Special” test, conducted at a slow flow rate, when compared with the 

result of a “Normal” test can indicate the condition of the meter. In general, the greater the difference between 

meter errors observed for the “Normal” and “Special” test, the stronger the indication that the meter is in need of 

reconditioning. It is questionable whether or not two tests conducted at flow rates that are not appreciably different 

will provide adequate information about the condition of a meter. If the features of a particular installation do not 

permit testing at the slower rates as currently required in paragraph N.4.2.4.Wholesale Devices, paragraph 

G-UR.4.4. Assistance in Testing Operations may be applied to facilitate a proper test. OWM also pointed out that 

when this requirement was first added the dominant meter technology was positive displacement meters. Since that 

time a number of different technologies have been developed and it may be necessary to reassess what minimum 

testing is necessary. OWM also noted that in training provided by NIST on testing of these systems, NIST, OWM 

recommends running tests at slightly above the targeted flow rate; this helps to prevent the flow rate from dropping 

below the meter’s marked minimum flow rate and, thus, helps to ensure a fair test of the metering system. NIST, 

OWM also reiterated comments it made during the 2013 Interim Meeting concerning the need to develop testing 

requirements for equipment with multi-point calibration capability.

Mr. Andersen suggested that the specifics of what testing is required would best be addressed in the NIST EPOs. 

Mr. Karimov expressed concern about testing at flow rates which create pressures exceeding the rated pressure of 

the meter. The Committee heard additional comments from conference members expressing confusion over what 

minimum testing should be required.

Mr. Michael Keilty (Endress + Hauser), chairman of the NTEP Measuring Sector, recommended that the item be 

moved to an information status. He suggested asking the Sector to review this issue and provide suggestions to the 

Committee on how to best address special tests on wholesale devices. This suggestion was supported by several 

other NCWM members.

The Committee agreed to ask the Measuring Sector to review and provide suggestions on this issue. Consequently, 

it changed the status of this item from “Voting” to “Information” to allow for additional input from the Sector and 

other interested parties.

Additional letters, presentations and data may have been part of the Committee’s consideration. 
NTEP - D / D1

Appendix D/Sub-Appendix D 

National Type Evaluation Program

Product Families Table, NTEP Technical Policy C – Units Correction

(Agenda Item 4a) 

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Test B

To cover a range of the following products, 

test with one product having a low specific 

gravity and test with a second product having 

a high specific gravity. The Certificate of 

Conformance will cover all products in all 

product categories listed in the table under 

Test B within the specific gravity range 

tested.

• Test B does not apply to product categories of 

liquefied gases, compressed liquids, cryogenic 

liquids or heated products.

Test F

To cover a range of the following products, test 

with one product having a specified 

conductivity. The Certificate of Conformance 

will cover all products with conductivity equal 

to or above the conductivity of the tested liquid.

• Test F does not apply to product categories of 

potable water, non-potable water, tap water, 

water mixes of alcohols and glycols, 

fertilizers, suspension fertilizers, liquid feeds, 

clear liquid fertilizers, chemicals or crop 

chemicals A, B, C, or D.

• Test F does not apply to product categories of 

liquefied gases, or compressed liquids.

Test C

To cover a range of products within each product 

category, test with one product having a low 

viscosity and test with a second product having a 

high viscosity within each category. The 

Certificate of Conformance will cover all 

products in the product category within the 

viscosity range tested.

Test E

To cover a range of products within each 

product category, test with one product having 

a low kinematic viscosity and test with a 

second product having a high kinematic 

viscosity within each category. The Certificate 

of Conformance will cover all products in the 

product category within the kinematic viscosity 

range tested.1

Note: Product categories under Test B were 

formerly referred to collectively as “Normal 

Liquids.”

Product Category:

Alcohols, Glycols and Water Mixes Thereof (Alc 

Gly)

Product Category:

Alcohols, Glycols and Water Mixes Thereof 

(Alc Gly)

Typical

Products

Specific 

Gravity2

(60 °F)

Product 

Category

Typical

Products

Conductivity

(microsiemens/centime

ter)

Product 

Categor

y 

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Typical

Products

Reference Kinematic 

Viscosity1

(60 °F) centistokes (cSt) 

Butanol 0.81 Alc Gly Butanol Alc Gly Butanol 3.34 Butanol 4.13

Ethanol 0.79 Alc Gly Ethanol 0.0013 Alc Gly Ethanol 1.29 Ethanol 1.64

Ethylene 1.19 Alc Gly Ethylene Alc Gly Ethylene Glycol 25.5 Ethylene Glycol 21.5

 1 Viscosity (dynamic) is measured in centipoise. Kinematic viscosity is measured in centistokes. Source for some of the viscosity value information is the Industry Canada – 

Measurement Canada "Liquid Products Group, Bulletin V-16-E (rev.1), August 3, 1999."

 centistokes (10-6 m2

/s) = centipoise (10-3 kg/m·s) ÷ density (kg/m3) OR centistokes (cSt) = 1.002 × centipoise (cP) ÷ density (SG) 2 The specific gravity of a liquid is the ratio of its density to that of water at standard conditions, usually 4 °C (or 40 °F) and 1 atmosphere. The density of water at standard 

conditions is approximately 1000 kg/m3 (or 998 kg/m3

). The specific gravity of a gas is the ratio of its density to that of air at standard conditions, usually 4 °C (or 40 °F) and 

one atmosphere.

NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix D – Product Families Table, NTEP Technical Policy C – Units Correction (Agenda Item 4a)
NTEP - D / D2

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Glycol Glycol

Isobutyl 0.81 Alc Gly Isobutyl 0.02 Alc Gly Isobutyl 4.54 Isobutyl 5.62

Isopropyl 0.79 Alc Gly Isopropyl 3.5 Alc Gly Isopropyl 2.78 Isopropyl 3.53

Methanol 0.80 Alc Gly Methanol 0.44 Alc Gly Methanol 0.64 Methanol 0.80

Propylene 

Glycol 1.04 Alc Gly Propylene Glycol Alc Gly Propylene Glycol 54 Propylene Glycol 52

Banvel 0.7 – 1.2 CC-A 6 Oil (#5, #6) FL&O

Test C

Product Category:

Crop Chemicals (Type A) (CC-A)

Test E

Product Category:

Compressed Liquids, Fuels and Refrigerants 

NH3 (Comp liq)

Herbicides 0.7 – 1.2 CC-A Asphalt FL&O

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Typical

Products

Reference Kinematic 

Viscosity1 

(60 °F) centistokes (cSt)

Paraquat 0.7 – 1.2 CC-A Avgas FL&O Banvel 4 – 400 Anhydrous 

Ammonia 0.31

Typical

Products

Specific 

Gravity2

(60 °F)

Product 

Category

Typical

Products

Conductivity

(microsiemens/centime

ter)

Product 

Categor

y 

Test C

Product Category:

Crop Chemicals (Type A) (CC-A) continued

Test E

Product Category:

Compressed Liquids, Fuels and Refrigerants 

NH3 (Comp liq) continued

Prowl 0.7 – 1.2 CC-A Biodiesel 

above B20 FL&O

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Typical

Products

Reference Kinematic 

Viscosity1

(60 °F) centistokes (cSt)

Round-up 0.7 – 1.2 CC-A Bunker Oil FL&O Herbicides 4 – 400 Butane 0.32

Touchdown 0.7 – 1.2 CC-A Cooking Oils FL&O Paraquat 4 – 400 Ethane

Treflan 0.7 – 1.2 CC-A Corn Oil FL&O Prowl 4 – 400 Freon 11 0.21

Adjuvants 0.7 – 1.2 CC-B Crude Oil FL&O Round-up 4 – 400 Freon 12 0.27

Fumigants 0.7 – 1.2 CC-B Diesel Fuel3 FL&O Touchdown 4 – 400 Freon 22 1.46

Fungicides 0.7 – 1.2 CC-B Fuel Oil

(#1, #2, #3, #4) 0 FL&O Treflan 4 – 400 Propane 0.195

Insecticides 0.7 – 1.2 CC-B Gasoline4 FL&O

Test C

Product Category:

Crop Chemicals (Type B) (CC-B)

Test E

Product Category:

Fuels, Lubricants, Industrial and Food Grade 

Liquid oils (FL&O)

Fungicides 1 – 1.2 CC-C Jet A FL&O

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Typical

Products

Reference Kinematic 

Viscosity1

(60 °F) centistokes (cSt)

Micronutrients 0.9 – 1.65 CC-D Jet A-1 FL&O Adjuvants 0.7 – 100 6 Oil (#5, #6) 73 – 14,500

Hydrochloric 

Acid 1.1 Chem Jet B FL&O Fumigants 0.7 – 100 Asphalt

 3 Diesel fuel blends (biodiesel with up to 20 % vegetable or animal fat/oil.) 4 Gasoline includes oxygenated fuel blends with up to 15 % oxygenate. 

NTEP Committee 2014 Final ReportAppendix D – 2013 Measuring Sector SummarySub-Appendix D 

– Product Families Table, NTEP Technical Policy C 

– Units Correction (Agenda Item 4a)
NTEP - D / D3

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Phosphoric 

Acid 1.87 Chem JP4 FL&O Fungicides 0.7 – 100 Avgas

Sulfuric Acid 1.83 Chem JP5 FL&O Insecticides 0.7 – 100 Biodiesel above 

B20 11.8

3-10-30 0.9 – 1.65 Fert JP7 and JP8 FL&O

Test C

Product Category:

Crop Chemicals (Type C) (CC-C)

Bunker Oil 11,300

4-4-27 0.9 – 1.65 Fert Kerosene FL&O Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Cooking Oils 10.8

9-18-9 1.32 Fert Light Oil FL&O Fungicides 20 – 900 Corn Oil 4.4

10-34-0 1.39 Fert Lubricating 

Oils FL&O

Test C

Product Category:

Crop Chemicals (Type D) (CC-D)

Crude Oil 3 – 2260

20 %

Aqua-Ammonia 0.89 Fert Olive Oil FL&O Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Diesel Fuel3 12

28 %, 30 % or 

32 %

1.28 –

1.32 Fert Peanut Oil FL&O Micronutrients 20 – 1000 Fuel Oil (#1, #2, #3, #4) 9 – 98

Typical

Products

Specific 

Gravity2

(60 °F)

Product 

Category

Typical

Products

Conductivity

(microsiemens/centime

ter)

Product 

Categor

y 

Test C

Product Category:

Chemicals (Chem)

Test E

Product Category:

Fuels, Lubricants, Industrial and Food Grade 

Liquid oils (FL&O) continued

Ammonia 

Nitrate

1.16 – 

1.37 Fert SAE Grades FL&O

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Typical

Products

Reference Kinematic 

Viscosity1

(60 °F) centistokes (cSt)

Clear Liquid 

Fertilizer

1.17 –

1.44 Fert Soy Oil 0 FL&O Hydrochloric Acid 0.80 – 1. 0 Gasoline4 0.39

Nitrogen 

Solution

1.17 –

1.44 Fert Spindle Oil FL&O Phosphoric Acid 161 Jet A

N-P-K 

Solutions 1.2 – 1.4 Fert Sunflower Oil FL&O Sulfuric Acid 1.49 Jet A-1 1.8

Urea 1.89 Fert Vegetable Oil 0 FL&O

Test C

Product Category:

Compressed Liquids, Fuels and Refrigerants 

(Comp liq)

Jet B

6 Oil (#5, #6) 0.9 FL&O Asphalt Heated Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) JP4 1.34

Asphalt FL&O Bunker C Heated Anhydrous 

Ammonia 0.188 JP5 2.56

Avgas FL&O Carbon TetraChloride Solv Cl Butane 0.19 JP7 and JP8 2.4

Biodiesel

above B20 0.86 FL&O MethyleneChloride Solv Cl Ethane Kerosene 2.6

Bunker Oil 0.99 FL&O PerchloroEthylene Solv Cl Freon 11 0.313 Light Oil 15.7

NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix D 

– Product Families Table, NTEP Technical Policy C 

– Units Correction (Agenda Item 4a)
NTEP - D / D4

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Cooking Oils 0.92 FL&O TrichloroEthylene Solv Cl Freon 12 0.359 Lubricating Oils 22 – 1250

Corn Oil 0.91 FL&O Acetates Solv 

Gen Freon 22 1.99 Olive Oil 127

Crude Oil 0.79 –

0.97 FL&O Acetone .02 Solv Gen Propane 0.098 Peanut Oil 11 – 122

Diesel Fuel3 0.84 FL&O Ethylacetate 0.00001 Solv 

Gen

Test C

Product Category:

Clear Liquid Fertilizers (Fert)

SAE Grades 214 – 4037

Fuel Oil

(#1, #2, #3, #4) 0.9 FL&O Hexane 0 Solv Gen

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Soy Oil 97.6

Gasoline4 0.72 FL&O MEK 0.1 Solv 

Gen 9-18-0 Spindle Oil

Jet A FL&O Toluene 0 Solv 

Gen 10-34-0 48 Sunflower Oil 97.1

Jet A-1 0.76 FL&O Xylene 0 Solv 

Gen

20 % AquaAmmonia 1.1 – 1.3 Vegetable Oil 145

Jet B FL&O Deionized Water 28 %, 30 % or 32 % 31 – 110

Test E

Product Category:

Solvents General (Solv Gen)

JP4 0.76 FL&O Demineralized Water Ammonia Nitrate 11.22

Typical

Products

Reference Kinematic 

Viscosity1

(60 °F) centistokes (cSt)

JP5 0.76 FL&O Clear Liquid 

Fertilizer 31 – 110 Acetates 0.47

JP7 and JP8 0.76 FL&O Nitrogen Solution 31 – 110 Acetone 0.43

Typical

Products

Specific 

Gravity2

(60 °F)

Product 

Category

Test D

To obtain coverage for a product category, test 

with one product in the product category. The 

Certificate of Conformance will cover all 

products in the category.

• Test D does not apply to product categories of 

pure alcohols, pure glycol, pure water, 

solvents chlorinated, solvents general, fuels, 

lubricants, industrial and food grade liquid 

oils.

• Test D does not apply to product categories of 

liquefied gases, compressed liquids or heated 

products.

Test C

Product Category:

Clear Liquid Fertilizers (Fert) continued

Test E

Product Category:

Solvents General (Solv Gen) continued

Appendix D NTEP Committee 2014 Final Report

– 2013 Measuring Sector Summary

Sub-Appendix D 

– Product Families Table, NTEP Technical Policy C 

– Units Correction (Agenda Item 4a)
NTEP - D / D5

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Kerosene 0.75 FL&O

Typical

Products

Conductivity

(micro-siemens/

centimeter)

Product 

Categor

y

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Typical

Products

Reference Kinematic 

Viscosity1

(60 °F) centistokes (cSt)

Light Oil 0.86 FL&O

Water 

Mixes of 

Alcohols 

and Glycols

Alc Gly N-P-K Solution Ethylacetate 1.42

Lubricating Oils 0.80 –

0.90 FL&O Banvel CC-A Urea 1 Hexane 0.52

Olive Oil 0.92 FL&O Herbicides CC-A 

Test C

Product Category:

Fuels, Lubricants, Industrial and Food Grade 

Liquid Oils (FL&O)

MEK 0.56

Peanut Oil 0.9 – 1.0 FL&O Paraquat CC-A Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Toluene 0.71

SAE Grades 0.9 FL&O Prowl CC-A 6 Oil (#5, #6) 66 – 13,000 Xylene 0.97

Soy Oil 0.93 FL&O Round-up CC-A Asphalt 100 – 5000

Test A

The following products must be individually 

tested and noted on the Certificate of 

Conformance.

Spindle Oil FL&O Touchdown CC-A Avgas 1.5 – 6 Typical

Products

Product

Category

Sunflower Oil 0.93 FL&O Treflan CC-A Biodiesel above B20 10.12 Banvel CC-A

Vegetable Oil 0.92 FL&O Adjuvants CC-B Bunker Oil 11,200 Herbicides CC-A

Liquid 

Molasses 1.25 Liq Feed Fumigants CC-B Cooking Oils 9.93 Paraquat CC-A 

Molasses Plus 

Phos Acid 

and/or Urea 

(TreaChle)

1.1 – 1.3 Liq Feed Fungicides CC-B Corn Oil 4 Prowl CC-A 

Carbon TetraChloride 1.6 Solv Cl Insecticides CC-B Crude Oil 3-1783 Round-up CC-A 

MethyleneChloride 1.34 Solv Cl Fungicides CC-C Diesel Fuel3 10 Touchdown CC-A 

PerchloroEthylene 1.6 Solv Cl Micronutrie

nts CC-D Fuel Oil (#1, #2, #3, #4) 8 to 88 Treflan CC-A 

TrichloroEthylene 1.47 Solv Cl Hydrochlor

ic Acid 395000 Chem Gasoline4 0.28 Adjuvants CC-B 

Acetates 0.93 Solv Gen Phosphoric 

Acid 56600 Chem Jet A 1.5 – 6 Fumigants CC-B 

NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix D 

– Product Families Table, NTEP Technical Policy 

– Units Correction (Agenda Item 4a)
NTEP - D / D6

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Typical

Products

Specific 

Gravity2

(60 °F)

Product 

Category

Typical

Products

Conductivity

(micro-siemens/

centimeter)

Product 

Categor

y 

Test C

Product Category:

Fuels, Lubricants, Industrial and Food Grade 

Liquid Oils (FL&O) continued

Typical

Products

Product

Category

Acetone 0.8 Solv Gen Sulfuric 

Acid 209000 Chem Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Fungicides CC-C 

Ethylacetate 0.96 Solv Gen 9-18-0 Fert Jet A-1 1.36 Insecticides CC-B

Hexane 0.66 Solv Gen 10-34-0 Fert Jet B 1.5 – 6 Fungicides CC-C

MEK 0.81 Solv Gen 20 % AquaAmmonia Fert JP4 1.02 Micronutrients CC-D 

Toluene 0.87 Solv Gen 28 %, 30 %

or 32 % Fert JP5 1.94 Hydrochloric Acid

Chem

Xylene 0.89 Solv Gen Ammonia 

Nitrate Fert JP7 and JP8 1.82 Phosphoric Acid Chem

Beverages 1.0 Water

Clear 

Liquid 

Fertilizer

Fert Kerosene 1.94 Sulfuric Acid Chem

Deionized 1.0 Water Nitrogen 

Solution Fert Light Oil 13.47 NH3 Comp Liq

Demineralized 1.0 Water N-P-K 

Solutions Fert Lubricating Oils 20 – 1000 20 % AquaAmmonia Fert

Juices 1.0 Water Urea 5000 Fert Olive Oil 116.8 28 %, 30 % or 

32 % Fert

Milk 1.0 Water Liquid 

Molasses 300 Liq Feed Peanut Oil 11 – 110 9-18-0 Fert

Nonpotable 1.0 Water

Molasses 

Plus Phos 

Acid and/or 

Urea 

(TreaChle)

Liq Feed SAE Grades 192 – 3626 10-34-0 Fert

Potable 1.0 Water 3-10-30 Sus Fert Spindle Oil Ammonia Nitrate Fert

Tap Water 1.0 Water 4-4-27 Sus Fert Soy Oil 90.6 Clear Liquid 

Fertilizer Fert

Appendix D NTEP Committee 2014 Final Report

– 2013 Measuring Sector Summary

Sub-Appendix D 

– Product Families Table, NTEP Technical Policy C 

– Units Correction (Agenda Item 4a)
NTEP - D / D7

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Test D

To obtain coverage for each of the following 

product categories, test with one product in 

each product category. The Certificate of 

Conformance will cover the products in the 

product category in which a product was 

tested.

Beverages Water Sunflower Oil 90.1 Nitrogen Solution Fert

Typical

Products

Specific 

Gravity2

(60 °F)

Product 

Category Juices Water Vegetable Oil 133 N-P-K Solutions Fert

Compressed 

Natural Gas 

(CNG)

0.6 – 0.8 

(1=Air) Comp gas Nonpotable 725 Water Urea Fert

Anhydrous 

Ammonia 0.61 Comp liq Potable 725 Water Bicep Flow

Butane 0.595 Comp liq Tap Water 725 Water Broadstrike Flow

Typical

Products

Specific 

Gravity2

(60 °F)

Product 

Category

Test C

Product Category:

Flowables (Flow)

Typical

Products

Product

Category

Ethane Comp liq Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Doubleplay Flow

Freon 11 1.49 Comp liq Bicep 20 – 900 Dual Flow

Freon 12 1.33 Comp liq Broadstrike 20 – 900 Guardsman Flow

Freon 22 1.37 Comp liq Doubleplay 20 – 900 Harness Flow

Propane 0.504 Comp liq Dual 20 – 900 Marksman Flow

Liquefied 

Natural Gas Cryo LNG Guardsman 20 – 900 Topnotch Flow

Liquefied 

Oxygen 0.66 Cryo LNG Harness 20 – 900 Asphalt Heated

Nitrogen 0.31 Cryo LNG Marksman 20 – 900 Bunker C Heated

Asphalt Heated Topnotch 20 – 900 Liquid Molasses Liq Feed

Bunker C 1.1 Heated

Test C

Product Category:

Heated (Heated)

Molasses plus 

Phos Acid and/or 

Urea (TreaChle)

Liq Feed

 5 This data point is suspected to be lower than that of normal tap water supplied for residential consumption.

NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-appendix D 

– Product Families Table, NTEP Technical Policy C 

– Units Correction (Agenda Item 4a)
NTEP - D / D8

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Test A

The following products must be individually 

tested and noted on the Certificate of 

Conformance.

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Carbon TetraChloride

Solv Cl

Typical 

Products

Specific 

Gravity2

(60 °F)

Product 

Category Asphalt 100 – 5000 MethyleneChloride Solv Cl

Compressed 

Hydrogen Gas 

(H or H2)

0.07 

(1=Air) Comp H2 Bunker C 11,200 PerchloroEthylene Solv Cl

Liquid Carbon 

Dioxide

1.12

(-40 °F) Liq CO2

Test C

Product Category:

Liquid Feed (Liq Feed)

TrichloroEthylene Solv Cl

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) 3-10-30 Sus Fert

Liquid Molasses 8640 4-4-27 Sus Fert

Molasses Plus Phos 

Acid and/or Urea 

(TreaChle)

2882

Compressed 

Hydrogen Gas (H 

or H2)

Comp H2

Liquid Carbon 

Dioxide Liq CO2

Test C

Product Category:

Solvents Chlorinated (Solv Cl)

Test D

To obtain coverage for a product category, test 

with one product in the product category. The 

Certificate of Conformance will cover all 

products in the category.

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Typical

Products

Product

Category

Carbon TetraChloride 0.99 Liquefied Natural 

Gas Cryo LNG

Test C

Product Category:

Solvents Chlorinated (Solv Cl) continued

Liquefied Oxygen Cryo LNG

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Nitrogen Cry LNG

Methylene-Chloride 0.46 Beverages Water

Perchloro-Ethylene 1 Deionized Water

Trichloro-Ethylene 0.6 Demineralized Water

Appendix D NTEP Committee 2014 Final Report

– 2013 Measuring Sector Summary

Sub-Appendix D 

– Product Families Table, NTEP Technical Policy C 

– Units Correction (Agenda Item 4a)
NTEP - D / D9

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Test C

Product Category:

Solvents General (Solv Gen)

Juices Water

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP) Milk Water

Acetates 0.44 Nonpotable Water

Acetone 0.34 Potable Water

Ethylacetate 1.36 Tap Water Water

Hexane 0.34

MEK 0.45

Toluene 0.62

Xylene 0.86

Test C

Product Category:

Suspension Fertilizers (Sus Fert)

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

3-10-30 100 – 1000

4-4-27 20 – 215

Test D

To obtain coverage for a product category, test 

with one product in the product category. The 

Certificate of Conformance will cover all 

products in the category.

Product Category:

Water (Water)

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Beverages 1.0

Deionized 1.0

Demineralized 1.0

Juices 1.0

Milk 1.0

Nonpotable 1.0

Potable 1.0

Test D

Product Category:

Water (Water) continued

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Tap Water 1.0

NTEP Committee 2014 Final Report

Appendix – 2013 Measuring Sector Summary

Sub-Appendix D – Product Families Table, NTEP Technical Policy C – Units Correction (Agenda Item 4a)
NTEP - D / D10

Mass Meter

Product Category and Test Requirements

Magnetic Flow Meter

Product Category and Test Requirements

Positive Displacement Flow Meter Product 

Category and Test Requirements

Turbine Flow Meter

Product Category and Test Requirements

Test A

The following products must be individually 

tested and noted on the Certificate of 

Conformance.

Product Category:

Cryogenic Liquids and Liquefied Natural Gas 

(Cryo LNG)

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Liquefied Natural 

Gas

Liquefied Oxygen 0.038

Nitrogen 1.07

Test A

The following products must be individually 

tested and noted on the Certificate of 

Conformance.

Product Category:

Compressed Hydrogen Gas (Comp H2)

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Compressed 

Hydrogen Gas (H or 

H2)

0.0097

Test A

The following products must be individually 

tested and noted on the Certificate of 

Conformance.

Product Category:

Liquid Carbon Dioxide (Liq CO2)

Typical

Products

Reference Viscosity1

(60 °F) centipoise (cP)

Liquid Carbon 

Dioxide 0.194

Appendix NTEP Committee 2014 Final Report

D 

– 2013 Measuring Sector Summary

Sub-Appendix D – Product Families Table, NTEP Technical Policy C – Units Correction (Agenda Item 4a)
NTEP - D / D11

Product Category Table – Category Abbreviations

Abbreviation Product Category Abbreviation Product Category

Alc Gly Alcohols, Glycols and Water Mixes Thereof Fert Fertilizers

CC-A Crop Chemicals (Type A) FL&O Fuels, Lubricants, Industrial and Food Grade Liquid Oils

CC-B Crop Chemicals (Type B) Flow Flowables

CC-C Crop Chemicals (Type C) Heated Heated Products (Above 50 °C)

CC-D Crop Chemicals (Type D) Liq Feed Liquid Feeds

Chem Chemicals Liq CO2 Liquid Carbon Dioxide

Comp gas Compressed Gases Solv Chl Solvents Chlorinated

Comp H2 Compressed Hydrogen Gas Solv Gen Solvents General

Comp liq Compressed Liquids (Fuels and Refrigerants, NH3) Sus Fert Suspension Fertilizers

Cryo LNG Cryogenic Liquids and Liquefied Natural Gas Water Water

Note: The Typical Products listed in this table are not limiting or all-inclusive; there may be other products and product trade names, which fall into a 

product family. Water and a product such as stoddard solvent or mineral spirits may be used as test products in the fuels, lubricants, industrial, and foodgrade liquid oils product family.

NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix D 

– Product Families Table, NTEP Technical Policy C 

– Units Correction (Agenda Item 4a)
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-appendix D – Product Families Table, NTEP Technical Policy C – Units Correction (Agenda Item 4a)

NTEP - D / D12

THIS PAGE INTENTIONALLY LEFT BLANK
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP – D / E1 

Appendix D/Sub-Appendix E 

National Type Evaluation Program

Permanence of Markings, LMD Checklist

(Agenda Item 4b) 

LMD Checklists and Test Procedures for Retail Motor-Fuel Dispensers – Card-Activated 

RMFDs: 

• Delete the following text associated with Sections 7.18 through 7.21: 

Credit Card- or Debit Card-Activated Retail Motor Fuel Dispenser

On card-activated retail motor fuel dispensers, the customer authorizes the dispenser by inserting the 

card or swiping the card through a slot. On credit card transactions, the customer is typically billed 

through the same methods as have been used for credit transactions handled through a station 

attendant. On debit card transactions, payment is made directly from the purchaser's account by 

electronic funds transfer.

7.18 A receipt must be available to the customer at the completion of the 

transaction. The issuance of the receipt may be initiated at the option 

of the customer.

Yes No N/A

7.19 The customer receipt must contain the following information:

7.19.1 The identity (codes may be used) of the product purchased, 

the quantity purchased, the unit price, and the total price.

Yes No N/A

7.19.2 Where a post-delivery discount(s) is applied, the sales receipt 

must provide:

7.19.2.1 the total quantity, unit price, and total computed price 

that were displayed on the dispenser at the end of the 

delivery prior to any post-delivery discount(s);

Yes No N/A

7.19.2.2 an itemization of the post-delivery discounts to the unit 

price; and

Yes No N/A

7.19.2.3 the final total price of each fuel sale after all postdelivery discounts are applied. See LMD Code S.1.6.8.Yes No N/A

7.20 Cash Value Card - A cash value card that is initially encoded with the 

purchase price, authorizing a customer to purchase products up to the 

current cash value of the card. The value of the card is decreased in 

amounts equal to individual transactions.

Yes No N/A

Means shall be provided to the customer to determine the initial cash 

value of the card and the remaining cash value prior to and after each 

transaction.

7.21 Invoice Billing - Invoice billing is a process in which customers are 

billed for one or more transactions at the end of a billing period.

7.21.1 For computing systems, the date, quantity, unit price, and

total price shall be recorded and shall agree with the 

indications on the dispenser.

Yes No N/A

7.21.2 When non-computing analog dispensers are used and the 

billing is on the basis of individual quantities for each 

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP - D / E2 

transaction (non-cumulative), the value of the smallest unit of 

displayed quantity for each transaction shall be not greater 

than 0.1 gallon providing the “pulser” and the recorded 

quantity used for billing are each equal to or less than 0.01 

gallon.

7.21.3 All displayed transaction information must be shown for at 

least 30 seconds after completing a delivery or starting the 

next transaction. The delivery is considered complete after the 

“handle” is off or after the nozzle has been returned to its 

designed hanging position.

Yes No N/A

• Delete Section 15. Card Activated Retail Motor-Fuel Dispensers:

Note: This text is redundant to that in current checklist Sections 40.1 through 40.4. 

15. Card-Activated Retail Motor Fuel Dispensers

Code Reference: G-S.2. Facilitation of Fraud

Accidental or intentional fraud causes great concern when customers use card-activated systems 

in service stations, bank-card-activated systems directly access bank accounts. The following 

criteria and test procedures apply to card-activated retail motor fuel dispensers.

A card-activated system shall authorize the dispensing of product for not more than three 

minutes for the time between authorization and “handle on” at the dispenser. It shall properly 

record transactions on the appropriate card account.

When a card-activated system is subjected to power loss of greater than 10 seconds, the 

dispenser shall de-authorize. Because systems may be installed with separate power lines to the 

console, card reader, and dispenser, tests should be run with power failures to different parts of 

the system to evaluate the potential for accidental or intentional errors. The appropriate device 

response depends when the power loss occurs during the delivery sequence.

15.1 The dispenser must de-authorize in not more than three 

minutes if the pump “handle” is not turned on.

Yes No N/A

15.2 If the time limit to deactivate a dispenser is programmable, it 

shall not accept an entry greater than three minutes.

Yes No N/A

15.3 When a power loss greater than 10 seconds occurs after the 

pump “handle” is on, the dispenser must de-authorize.

Yes No N/A

15.4 When there is a loss of power, but the pump “handle” is not on, 

the dispenser must de-authorize in not more than three 

minutes.

Yes No N/A

• Delete Section 16. Test Methods for Card-Activated Retail Motor-Fuel Dispensers:

Note: This text is redundant to that in current checklist Section 41.

16. Test Methods for Card-Activated Retail Motor Fuel Dispensers

16.1 Authorize the dispenser and, with the pump “handle” on, 

interrupt power to any part (or all) of the system. The pump 

should deauthorize immediately. Specifically: 

16.1.1. Authorize with a card and turn the “handle” on. Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP – D / E3 

Power down briefly, then restore power. Try to 

dispense product: the dispenser must not dispense 

because the power failure should have de-authorized 

the dispenser.

16.2 Authorize the dispenser using a card (leaving handle off); wait 

more than three minutes, and try to start the dispenser. It 

should not start because the authorization should have timed 

out. Specifically:

16.2.1. Authorize with a card, but do not turn the “handle” 

on. Power down for more than three minutes, and 

then restore power. Try to dispense product; the 

dispenser should have “timed-out” and not dispense.

Yes No N/A

16.2.2. Authorize and dispense with card #1. Allow the 

system to time out and de-authorize (if it does). Do not 

turn off the “handle.” Authorize and dispense with 

card #2. The transactions shall be properly recorded 

for each card.

Yes No N/A

Note: A mechanical register may accumulate the two deliveries, but the 

printed record must not have accumulated values.

16.2.3. Authorize with card #1. Turn the “handle” on, then 

off. Authorize with card #2. Dispense product and 

complete the delivery. Check the printed receipt to 

verify that the delivery has been properly charged to 

card #2.

Yes No N/A

16.2.4. Turn the dispenser “handle” on, and use a card to 

authorize the dispenser. Turn the “handle” off. After 

a period of 15 seconds, turn the “handle” on. Try to 

deliver product; the dispenser must not dispense.

Yes No N/A

16.2.5. Authorize with card #1 (do not turn the “handle” on) 

and interrupt power for at least 10 seconds. This 

should de-authorize the dispenser. Resupply power; 

turn the “handle” on; try to dispense. The dispenser 

shall not deliver product.

Yes No N/A

Note: The term “handle” generically refers to the handle, flapper, start 

button, on/off switch, or other mechanism used to activate or deactivate 

the dispenser.

16.2.6. Authorize with card #1; turn the “handle” on, and 

then interrupt power. This should de-authorize the 

dispenser. Resupply power and authorize the 

dispenser with card #2. Then, complete a delivery. 

Verify that the transaction is charged to card #2.

Yes No N/A

Note: This test is not required if the device under test complies with paragraph 16.1.

16.2.7. Authorize a dispenser with card #1, but do not turn 

the dispenser “handle” on. Try to authorize the same 

dispenser with card #2; it should not be accepted until 

after the 3 minute time-out.

Yes No N/A

16.3. Attempt to override or confuse the card system by varying the 

length of time the card is in the slot, (e.g., vary the “swipe” 

times) and pushing all other keys on the keypad during each 

step of the authorization process.

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP - D / E4 

NTEP LMD Additional Checklists and Test Procedures for Card-Activated Retail MotorFuel Dispensers:

• Move the preamble to Sections 7.18 through 7.21. (shown above) to the beginning of the “NTEP LMD 

Additional Checklists and Test Procedures for Card-Activated Retail Motor-Fuel Dispensers.”

• Create a new “Code Reference G-S.5.1. Indicating and Recording Elements” under “NTEP LMD 

Additional Checklists and Test Procedures for Card-Activated Retail Motor-Fuel Dispensers,” and move 

the text currently in Sections 7.20 and 7.21 (shown above) to this new code reference.

• Create a new Code Reference heading for LMD Code paragraphs S.1.6.7. Recorded Representation and 

S.1.6.8. Recorded Representations for Transactions Where a Post-Delivery Discount(s) is Provided and 

insert text from 7.18 through 7.19., modified to reflect current NIST Handbook 44 language in this new 

reference.

Resulting changes in the “Additional Checklists and Test Procedures for Card-Activated Retail 

Motor-Fuel Dispensers” will appear as follows:

National Type Evaluation Program

Liquid Measuring Devices – Additional Checklists and Test Procedures

for Card-Activated Retail Motor Fuel Dispensers

40. Card-Activated Retail Motor Fuel Dispensers

On card-activated retail motor fuel dispensers, the customer authorizes the dispenser by inserting the 

card or swiping the card through a slot. On credit card transactions, the customer is typically billed 

through the same methods as have been used for credit transactions handled through a station 

attendant. On debit card transactions, payment is made directly from the purchaser's account by 

electronic funds transfer.

Code Reference: G-S.5.1. Indicating and Recording Elements

40.1. Cash Value Card - A cash value card that is initially encoded with the 

purchase price, authorizing a customer to purchase products up to the 

current cash value of the card. The value of the card is decreased in 

amounts equal to individual transactions.

Yes No N/A

Means shall be provided to the customer to determine the initial cash 

value of the card and the remaining cash value prior to and after each 

transaction.

40.2 Invoice Billing - Invoice billing is a process in which customers are 

billed for one or more transactions at the end of a billing period.

40.2.1 For computing systems, the date, quantity, unit price, and total

price shall be recorded and shall agree with the indications on 

the dispenser.

Yes No N/A

40.2.2 When non-computing analog dispensers are used and the 

billing is on the basis of individual quantities for each 

transaction (non-cumulative), the value of the smallest unit of 

displayed quantity for each transaction shall be not greater 

than 0.1 gallon providing the “pulser” and the recorded 

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP – D / E5 

quantity used for billing are each equal to or less than 0.01 

gallon.

40.2.3 All displayed transaction information must be shown for at 

least 30 seconds after completing a delivery or starting the next 

transaction. The delivery is considered complete after the 

“handle” is off or after the nozzle has been returned to its 

designed hanging position.

Yes No N/A

Code Reference: G-S.2. Facilitation of Fraud

There is great concern regarding the potential for accidental or intentional fraud when card-activated systems 

are used in service stations, especially because bank-card-activated systems give direct access to bank 

accounts. The following criteria and test procedures apply to card-activated retail motor fuel 

dispensers. 

A card-activated system shall authorize the dispensing of product for not more than three minutes of the time 

between authorization and “handle on” at the dispenser. It shall properly record transactions on the 

appropriate card account.

When a card-activated system is subjected to power loss of greater than 10 seconds, the dispenser shall 

deauthorize. Because systems may be installed with separate power lines to the console, card reader, and 

dispenser, to different parts of the system should be tested with power failures to evaluate the potential for 

accidental or intentional errors. The appropriate device response depends upon when the power loss occurs 

during the delivery sequence.

40.140.3 The dispenser must de-authorize in not more than three minutes if the 

pump “handle” is not turned on.

Yes No N/A

40.240.4 If the time limit to deactivate a dispenser is programmable, it shall 

not accept an entry greater than three minutes.

Yes No N/A

40.340.5 When a power loss greater than 10 seconds occurs after the pump 

“handle” is on, the dispenser must de-authorize.

Yes No N/A

40.440.6 When there is a loss of power, but the pump “handle” is not on, the 

dispenser must de-authorize in not more than three minutes.

Yes No N/A

Code References: S.1.6.7. Recorded Representations; and S.1.6.8. Recorded Representations for 

Transaction Where a Post-Delivery Discount(s) is Provided.

Except for fleet sales and other price contract sales, for transactions conducted with point-of-sale systems or 

devices activated by credit cards, debit cards, or cash, a printed receipt containing information about the 

transaction shall be available to the customer as outlined in the following items. A printed receipt must 

always be available to the customer upon request and printing of the receipt may be initiated at the 

option of the customer. In addition, some systems may be equipped with the capability to issue an 

electronic receipt; for those systems, the customer may be given the option to receive the receipt 

electronically (e.g., via cell phone, computer, etc.).

40.7 The system must provide a receipt to be made available to the 

customer at the completion of the transaction through either:

40.7.1. a built-in recording element OR Yes No N/A

40.7.2. a separate recording element that is part of the system Yes No N/A

Indicate the option(s) available for providing a receipt:

Hard Copy or Electronic

Hard Copy and Electronic
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP - D / E6 

40.8 Except for transactions where a post-delivery discount is provided, 

the customer receipt must contain the following information:

40.8.1 The total volume of the delivery; Yes No N/A

40.8.2. The unit price; Yes No N/A

40.8.3. The total computed price; and Yes No N/A

40.8.4. The product identity by name, symbol, abbreviation, or code 

number.

Yes No N/A

40.9 Where a post-delivery discount(s) is applied, the sales receipt must 

provide:

40.9.1. The product identity by name, symbol, abbreviation, or code 

number;

40.9.1 the total quantity, unit price, and total computed price that 

were displayed on the dispenser at the end of the delivery 

prior to any post-delivery discount(s);

Yes No N/A

40.9.2. an itemization of the post-delivery discounts to the unit 

price; and

Yes No N/A

40.9.3. the final total price of each fuel sale after all post-delivery 

discounts are applied.

Yes No N/A

41. Test Methods

41.1. Authorize the dispenser and, with the pump “handle” on, interrupt power 

to any part (or all) of the system. The pump should de-authorize 

immediately. Specifically:

41.1.1. Authorize with a card and turn the “handle” on. Power down 

briefly then restore power. Try to dispense product, the dispenser 

must not dispense since the power failure should have deauthorized the dispenser.

Yes No N/A

41.2. Authorize the dispenser using a card (leaving handle off), wait more than 

three minutes, and try to start the dispenser. It should not start because the 

authorization should have timed out. Specifically:

41.2.1. Authorize with a card, but do not turn the “handle” on. Power 

down for more than three minutes, and then restore power. Try to 

dispense product, the dispenser should have “timed-out” and not 

dispense.

Yes No N/A

41.2.2. Authorize and dispense with card #1. Allow the system to time out 

and de-authorize (if it does.) Do not turn off the “handle.” 

Authorize and dispense with card #2. The transactions shall be 

properly recorded for each card.

Yes No N/A

Note: A mechanical register may accumulate the two deliveries, but the printed 

record must not have accumulated values.

41.2.3. Authorize with card #1. Turn the “handle” on, then off. Authorize 

with card #2. Dispense product and complete the delivery. Check 

the printed receipt to verify that the delivery has been properly 

charged to card #2.

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP – D / E7 

41.2.4. Turn the dispenser “handle” on and use a card to authorize the 

dispenser. Turn the “handle” off, then on. Try to deliver product: 

the dispenser must not dispense.

Yes No N/A

For Multi-hose Dispensers:

41.2.5. Turn the dispenser “handle” on and use a card to authorize the 

dispenser. Turn the “handle” off. After a period of 15 seconds, 

turn the “handle” on. Try to deliver product; the dispenser must 

not dispense.

Yes No N/A

41.2.6. Authorize with card #1 (do not turn the “handle” on) and interrupt 

power for at least 10 seconds. This should de-authorize the 

dispenser. Resupply power, turn “handle” on, and try to dispense. 

The dispenser shall not deliver product.

Yes No N/A

41.2.7. Authorize with card #1, turn the “handle” on, and then interrupt 

power. This should de-authorize the dispenser. Resupply power 

and authorize the dispenser with card #2, then complete a 

delivery. Verify that the transaction is charged to card #2.

Yes No N/A

41.2.8. Authorize a dispenser with card #1, but do not turn the dispenser 

“handle” on. Try to authorize the same dispenser with card #2, it 

should not be accepted until after the three minute time-out.

Yes No N/A

41.3. Attempt to override or confuse the card system by: varying the length of 

time the card is in the slot (e.g., vary the “swipe” times, and pushing all 

other keys on the keypad during each step of the authorization process). 

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix E – LMD-Checklist Criteria for Card Activated RMFDs, Rev. 11-23-13 (Agenda Item 4b)

NTEP - D / E8 

THIS PAGE INTENTIONALLY LEFT BLANK
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix F – ECR Interfaced w/RMFDs Checklist Criteria for Recorded Representations, Rev 11-12-13 (Agenda Item 4c)

NTEP - D / F1 

Appendix D/Sub-Appendix F 

National Type Evaluation Program

Proposed Additions to the Additional Checklists and Test Procedures for 

Cash-Activated RMFDs 

(Agenda Item 4b) 

Code References: G-S.5.1. and S.1.6.7

Except for fleet and other price contract sales, a printed receipt showing the quantity, unit price, total 

price, and product identity for each fuel delivery in a transaction is required for cash-activated 

RMFDs. A printed receipt must always be available to the customer upon request and printing of the 

receipt may be initiated at the option of the customer. In addition, some systems may be equipped with 

the capability to issue an electronic receipt for those systems, the customer may be given the option to 

receive the receipt electronically (e.g., via cell phone, computer, etc.).

Various forms (or representations) of sales receipt formats are acceptable provided they are clear and 

understandable. Guidelines are provided to assist manufacturers and weights and measures officials in 

determining the acceptability of formats. Symbols other than those given below may be acceptable, but 

they will be reviewed on a case-by-case basis. More descriptive symbols and terms are acceptable.

17.10 The system must provide a receipt to be made available to the 

customer at the completion of the transaction through either:

Yes No N/A

 a built-in recording element OR

 a separate recording element that is part of the system

Indicate the option(s) available for providing a receipt:

 Hard Copy or Electronic

 Hard Copy and Electronic

17.11 Except for transactions where a post-delivery discount is provided, 

the customer receipt must contain the following information:

17.11.1 The total volume of the delivery; Yes No N/A

17.11.2 The unit price; Yes No N/A

17.11.3 The total computed price; and Yes No N/A

17.11.4 The product identity by name, symbol, abbreviation, or 

code number.

Yes No N/A

17.12 Where a post-delivery discount(s) is applied, the sales receipt must 

provide: 

17.12.1 the total quantity, unit price, and total computed price that 

were displayed on the dispenser at the end of the delivery 

prior to any post-delivery discount(s);

Yes No N/A

17.12.2 an itemization of the post-delivery discounts to the unit 

price; and

Yes No N/A

17.12.3 the final total price of each fuel sale after all post-delivery 

discounts are applied.

Yes No N/A

17.13 The unit of measure shall be clearly defined. Acceptable symbols for 

units are: Gallon Gal, of G for gallons and Liter, l or L for liters. 

Upper or lower case is optional except that a lower case “l” must not 

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix F – ECR Interfaced w/RMFDs Checklist Criteria for Recorded Representations, Rev 11-12-13 (Agenda Item 4c)

NTEP - D / F2 

resemble a “1” (numeral one), (e.g. a script “l” is an acceptable 

symbol for liters.)

The unit of measure may be defined with either the quantity value, 

(e.g., 10 000 GAL) or with the unit price, (e.g., $1.119/Gal), not 

necessarily both.

17.14 Acceptable designations of the unit price are: “@” as a prefix to the

unit price value, an upper or lower case “X” or slash between the 

quantity and unit price, $/G, PPG (price per gallon), PPL (price per 

liter), UP (unit price), P/G, price/Vol, PPU (price per unit), 

DOL/GAL.

17.15 The total fuel price must be clearly distinguished from other 

information in the fuel transaction. To identify the total fuel sale 

price, use one of the following methods:

17.15.1 Decimal point in the proper dollar position, (e.g., XX.XX.) If 

a dollar sign is not used, there must be at least one offset 

column of the least significant digit in recorded information, 

other than the sale price.

Yes No N/A

17.15.2 The words gas, diesel, or other product designation may be 

used with the word “SALE” (e.g., “FUEL SALE” or “GAS 

SALE”) or the product identification followed by the sale 

price, (e.g., GAS 20.00.)

Yes No N/A 
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix G – Proposed Changes to the ECRF Interfaced with RMFDs Checklist, Rev 11-12-13 (Agenda Item 4e) 

NTEP - D / G1 

Appendix D/Sub-Appendix G 

National Type Evaluation Program

Proposed Changes to the ECR Interfaced with RMFDs Checklist 

(Agenda Item 4e) 

3. Recorded Representations

Code Reference: G-S.5.1. S.1.6.7, and S.1.6.8. 

Except for fleet and other price contract sales, aA sales printed receipt showing the quantity, unit price, 

total price, and product identity for each fuel delivery in a transaction is required for point-of-sale systems. A 

printed receipt must always be available to the customer upon request and printing of the receipt may be 

initiated at the option of the customer. In addition, some systems may be equipped with the capability to 

issue an electronic receipt. Tfor those systems, the customer may be given the option to receive the receipt 

electronically (e.g., via cell phone, computer, etc.).

Various forms (or representations) of sales receipt formats are acceptable provided they are clear and 

understandable. Guidelines are provided to assist manufacturers and weights and measures officials in 

determining the acceptability of formats. Symbols other than those given below may be acceptable, but they 

will be reviewed on a case-by-case basis. More descriptive symbols and terms are acceptable.

3.1 The system must provide a receipt to be made available to the 

customer at the completion of the transaction through either:

Yes No N/A

 a built-in recording element OR

 a separate recording element that is part of the system

Indicate the option(s) available for providing a receipt:

 Hard Copy or Electronic

 Hard Copy and Electronic

3.2 Except for transactions where a post-delivery discount is provided, the 

customer receipt must contain the following information:

3.2.1 The total volume of the delivery; Yes No N/A

3.2.2 The unit price; Yes No N/A

3.2.3 The total computed price; and Yes No N/A

3.2.4 The product identity by name, symbol, abbreviation, or code 

number.

Yes No N/A

3.3 Where a post-delivery discount(s) is applied, the sales receipt must 

provide: 

3.3.1 the total quantity, unit price, and total computed price that 

were displayed on the dispenser at the end of the delivery 

prior to any post-delivery discount(s);

Yes No N/A

3.3.2 an itemization of the post-delivery discounts to the unit price; 

and

Yes No N/A

3.3.3 the final total price of each fuel sale after all post-delivery 

discounts are applied.

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix G – Proposed Changes to the ECRF Interfaced with RMFDs Checklist, Rev 11-12-13 (Agenda Item 4e) 

NTEP - D / G2 

3.14 The unit of measure shall be clearly defined. Acceptable symbols for units 

are: Gallon Gal, of G for gallons and Liter, l or L for liters. Upper or lower 

case is optional except that a lower case “l” must not resemble a “1” 

(numeral one), (e.g. a script “l” is an acceptable symbol for liters.)

Yes No N/A

The unit of measure may be defined with either the quantity value, (e.g., 

10 000 GAL) or with the unit price, (e.g., $1.119/Gal), not necessarily 

both.

3.25 Acceptable designations of the unit price are: “@” as a prefix to the unit 

price value, an upper or lower case “X” or slash between the quantity and 

unit price, $/G, PPG (price per gallon), PPL (price per liter), UP (unit 

price), P/G, price/Vol, PPU (price per unit), DOL/GAL.

3.36 The total fuel price must be clearly distinguished from other information in 

the fuel transaction. To identify the total fuel sale price, use one of the 

following methods:

3.36.1 Decimal point in the proper dollar position, (e.g., XX.XX.) If a 

dollar sign is not used, there must be at least one offset column of 

the least significant digit in recorded information, other than the 

sale price.

Yes No N/A

3.36.2 The words gas, diesel, or other product designation may be used 

with the word “SALE” (e.g., “FUEL SALE” or “GAS SALE”) or 

the product identification followed by the sale price, (e.g., GAS 

20.00.)

Yes No N/A

3.47 Each fuel delivery in a transaction for a single customer must be recorded 

separately.

Yes No N/A

3.5 Where a post-delivery discount(s) is applied, the sales receipt must 

provide: - the total quantity, unit price, and total computed price that 

were displayed on the dispenser at the end of the delivery prior to any 

post-delivery discount(s); - an itemization of the post-delivery discounts 

to the unit price; and the final total price of each fuel sale after all postdelivery discounts are applied. See LMD Code S.1.6.8.-: 

Yes No N/A

3.68 The product identity for fuel need only distinguish it from other items. The 

product name, code number (similar to a price look-up code), or hose or 

pump number are acceptable designations of product identify. See LMD 

Code S.1.6.4.

Yes No N/A

Example 1 Example 2

Meat 3.89 Meat 3.89

Soda 2.99 Soda 2.99

Gas 5.080 G @ 1.000 5.08 Gas 4.080 G @ 1.000 4.08

Cig 1.00

Note: NIST Handbook 44 does not require that product identification, 

date, and change due be printed on a ticket or a cash register receipt. 

These requirements apply to recorded representations resulting from a 

final sale, not to deposit slips for prepay transactions, etc.
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix G – Proposed Changes to the ECRF Interfaced with RMFDs Checklist, Rev 11-12-13 (Agenda Item 4e) 

NTEP - D / G3 

3.79 The quantity representation of an item sold by count must be expressed 

in whole units. An expression of count with a decimal point and 

trailing zeroes, (e.g., 2.00 items) is acceptable provided that fractions 

of a whole unit cannot be expressed.

Yes No N/A
NTEP Committee 2014 Final Report

Appendix D – 2013 Measuring Sector Summary

Sub-Appendix G – Proposed Changes to the ECRF Interfaced with RMFDs Checklist, Rev 11-12-13 (Agenda Item 4e) 

NTEP - D / G4 

THIS PAGE INTENTIONALLY LEFT BLANK