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JJF 1940-2021 English PDF

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JJF 1940-2021: Calibration Specification for Electromagnetic Balances
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JJF 1940-2021English489 Add to Cart 4 days [Need to translate] Calibration Specification for Electromagnetic Balances Valid JJF 1940-2021

PDF similar to JJF 1940-2021


Standard similar to JJF 1940-2021

JJF 1943   GB/T 36126   GB/T 1885   JJF 1942   JJF 1938   

Basic data

Standard ID JJF 1940-2021 (JJF1940-2021)
Description (Translated English) Calibration Specification for Electromagnetic Balances
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.060
Word Count Estimation 22,238
Date of Issue 2021-12-08
Date of Implementation 2022-06-08
Issuing agency(ies) State Administration for Market Regulation
Summary This standard applies to the calibration of electromagnetic balances.

JJF 1940-2021: Calibration Specification for Electromagnetic Balances

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National Metrology Technical Specifications of the People's Republic of China Calibration Specifications for Electromagnetic Balances Released on 2021-12-08 2022-06-08 Implementation Released by the State Administration for Market Regulation Calibration Specifications for Electromagnetic Balances Responsible unit: National Mass Density Measurement Technical Committee Main drafting unit:Shandong Provincial Institute of Metrology Jiangsu Institute of Metrology Shenyang Chuangyuan Measuring Instrument Co:, Ltd: Participating in the drafting unit: Zhejiang Institute of Metrology Henan Institute of Metrology Shenyang Institute of Metrology Natural Gas Research Institute of PetroChina Southwest Oil and Gas Field Company This specification entrusts the National Mass Density Measurement Technical Committee to be responsible for interpretation The main drafters of this specification: Shi Li (Shandong Institute of Metrology) Liu Wei (Jiangsu Institute of Metrology) Dong Yang (Shenyang Chuangyuan Measuring Instrument Co:, Ltd:) Participating drafters: Ge Rui (Zhejiang Institute of Metrology) He Kaiyu (Henan Institute of Metrology) Zhao Na (Shenyang Institute of Metrology) Ren Jia (Natural Gas Research Institute of PetroChina Southwest Oil and Gas Field Company)

Table of contents

Introduction (Ⅱ) 1 Scope(1) 2 References(1) 3 Terms and units of measurement(1) 3:1 Terminology(1) 3:2 Units of measurement(1) 4 Overview(2) 5 Metrological characteristics(3) 5:1 Repeatability(3) 5:2 Indication error of electrical measurement range (3) 5:3 Unequal arm error (3) 5:4 Additional performance of multi-range electromagnetic balance (3) 6 Calibration conditions(3) 6:1 Environmental conditions (3) 6:2 Equipment used for calibration(3) 7 Calibration Items and Calibration Methods(4) 7:1 List of Calibration Items(4) 7:2 Calibration method(4) 8 Calibration Results(7) 9 Recalibration interval(8) Appendix A Electromagnetic Balance Calibration Record Format (9) Appendix B Calibration Certificate Inner Page Format (12) Appendix C Example of Measurement Uncertainty Evaluation of Electromagnetic Balance Calibration Results (13)

Introduction

This specification is based on JJF 1071-2010 "National Measurement and Calibration Specification Writing Rules", JJF 1001-2011 "General Metrology Terms and Definitions" and JJF 1059:1-2012 "Assessment and Expression of Measurement Uncertainty" are the basic series of specifications formulate: The measurement characteristics, calibration items and calibration methods of this specification mainly refer to OIMLR76:2006 (E) "Non-automatic weighing Relevant contents of "Electronic Balance" and JJF 1326-2011 "Calibration Specifications for Mass Comparators": This specification is published for the first time: Calibration Specifications for Electromagnetic Balances

1 Scope

This specification applies to the calibration of electromagnetic balances:

2 References

This specification references the following documents: JJG98 mechanical balance JJG99 Weights JJG1036 electronic balance JJF 1001 General Metrology Terms and Definitions JJF 1229 Terms and Definitions of Mass Density Measurement JJF 1326 Mass comparator calibration specification For dated references, only the dated version applies to this specification; for undated references document, its latest version (including all amendments) applies to this specification:

3 Terminology and units of measurement

3:1 Terminology The following terms and definitions defined by JJF 1229 and JJF 1001 apply to this specification: A balance that uses the principle of lever balance and electromagnetic force balance to measure the mass of an object: Note: Including double-disk electromagnetic balance and single-disk electromagnetic balance: Under a certain test load, the electronic system can reach the range of continuous weighing without the help of mechanical balancing device: 3:1:3 Actual division value actualscaleinterval The difference between two adjacent indications expressed in units of mass on an electromagnetic balance: Note: The actual division value should be expressed in the form of 1×10k, 2×10k or 5×10k, and k is a positive integer, a negative integer or zero: 3:2 Units of measurement Mass unit: ---kg,kg; ---mg, mg; --- grams, g; ---t, t:

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