Specifications | National Type Evaluation Technical Committee stevenc |
Business section |

Specifications | National Type Evaluation Technical Committee stevenc |
Business section |
Specifications | National Type Evaluation Technical Committee stevenc |
Outline | Table of Contents - Annual Report of the 95th NCMW NTEP 2010 Final Report NTEP 2010 Final Report Appendix C – NTETC Weighing Sector Meeting Summary Load Cell Items 1. Load Cell Creep Recovery 1 (a). Load Cell Creep Recovery (Recommended Changes to Publication 14 Based on Actions at the 2009 NCWM Annual Meeting) 1 (b). Load Cell Creep Recovery (Editorial Suggestions) Next Sector Meeting Appendix A - Recommendations for Amendments to Publication 140F Agenda Item 1.(a). Agenda Item 1.(b). Agenda Item 4. Agenda Item 5. Agenda Item 6. Agenda Item 9. Agenda Item 10. Agenda Item 11. Agenda Item 14 (a). Agenda Item 14 (b). Agenda Item 14 (d). Agenda Item 14 (e). Agenda Item 14 (f). |
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Content | NTEP 2010 Final Report Appendix C – NTETC Weighing Sector NTEP - C19 T.N.4.5.1. Time Dependence: Class II, III, and IIII Non-automatic Weighing Instruments. – A non-automatic weighing instrument of Classes II, III, and IIII shall meet the following requirements at constant test conditions. During type evaluation, this test shall be conducted at 20 °C ± 2 °C (68 °F ± 4 °F): (a) When any load is kept on an instrument, the difference between the indication obtained immediately after placing the load and the indication observed during the following 30 minutes shall not exceed 0.5 e. However, the difference between the indication obtained at 15 minutes and the indication obtained at 30 minutes shall not exceed 0.2 e. (b) If the conditions in (a) are not met, the difference between the indication obtained immediately after placing the load on the instrument and the indication observed during the following 4 hours shall not exceed the absolute value of the maximum permissible error at the load applied. (c) The deviation on returning to zero as soon as the indication has stabilized, after the removal of any load which has remained on the instrument for 30 minutes, shall not exceed 0.5 e. For a multi-interval instrument, the deviation shall not exceed 0.5 e1 (where e1 is the interval of the first partial weighing range or segment of the scale). On a multiple range instrument, the deviation on returning to zero from Maxi (load in the applicable weighing range) shall not exceed 0.5 ei (interval of the weighing segment). Furthermore, after returning to zero from any load greater than Max1 (capacity of the first weighing range) and immediately after switching to the lowest weighing range, the indication near zero shall not vary by more than e1 (interval of the first weighing range) during the following 5 minutes. (Added 2005) (Amended 2006 and 2010) T.N.4.5.2. Time Dependence: Class III L Non-automatic Weighing Instruments. – A non-automatic weighing instrument of Class III L shall meet the following requirements: (a) When any load is kept on an instrument, the difference between the indication obtained immediately after placing the load and the indication observed during the following 30 minutes shall not exceed 1.5 e. However, the difference between the indication obtained at 15 minutes and the indication obtained at 30 minutes shall not exceed 0.6 e. (b) If the conditions in (a) are not met, the difference between the indication obtained immediately after placing the load on the instrument and the indication observed during the following 4 hours shall not exceed the absolute value of the maximum permissible error at the load applied. (c) The deviation on returning to zero as soon as the indication has stabilized, after the removal of any load which has remained on the instrument for 30 minutes, shall not exceed one-half of the absolute value of the applicable tolerance for the applied load for Class III L devices. (Added 2005) (Amended 2010) T.N.4.5.3. Zero Load Return: Non-automatic Weighing Instruments. – A non-automatic weighing instrument shall meet the following requirements at constant test conditions. During type evaluation, this test shall be conducted at 20 °C ± 2 °C (68 °F ± 4 °F). The deviation on returning to zero as soon as the indication has stabilized, after the removal of any load which has remained on the instrument for 30 minutes shall not exceed: (a) 0.5 e for Class I, II, and IIII devices, (b) 0.5 e for Class III devices with 4000 or fewer divisions, (c) 0.83 e for Class III devices with more than 4000 divisions, or |
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Following Datasheets | 10-ntep-app-d-09-annual-final (20 pages) 10-ntep-app-d-11-annual-final (24 pages) 10-ntep-app-d-11-pub15-final (24 pages) 10-ntep-app-d-software-10-annual-final (22 pages) 10-ntep-app-e-09-annual-final (6 pages) 10-ntep-app-e-11-annual-final (6 pages) 10-ntep-app-e-11-pub15-final (6 pages) 10-ntep-app-e-belt-10-annual-final (20 pages) 10-ntep-app-f-10-annual-final (12 pages) 10-ntep-app-f-11-annual-final (6 pages) |
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