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Basic dataStandard ID: GB/T 4167-2024 (GB/T4167-2024)Description (Translated English): Weights Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: N13 Classification of International Standard: 17.100 Word Count Estimation: 50,532 Date of Issue: 2024-11-28 Date of Implementation: 2025-06-01 Older Standard (superseded by this standard): GB/T 4167-2011 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 4167-2024: Weights---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.ICS 17.100 CCSN13 National Standard of the People's Republic of China Replaces GB/T 4167-2011 Weights Released on 2024-11-28 2025-06-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface V Introduction VI 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Metrological performance requirements 4 4.1 Maximum allowable error 4 4.2 Expanded uncertainty 4 4.3 Agreed Quality 5 4.4 Units of measurement 6 5 Technical Requirements 6 5.1 Shape 6 5.2 Structure 7 5.3 Materials 8 5.4 Magnetism 9 5.5 Density 10 5.6 Surface condition 11 5.7 Surface roughness 12 5.8 Adjustment 12 5.9 Mark 13 5.10 Stability 14 6 Test methods 14 6.1 Test conditions 14 6.2 Test standards 15 6.3 Test method 16 7 Inspection Rules 17 8 Marking, packaging, transportation and storage 18 8.1 Signs 18 8.2 Packaging 18 8.3 Transportation18 8.4 Storage 19 Appendix A (informative) Illustrations of weights of different shapes and sizes 20 A.1 Cylindrical weight 20 A.2 Type 1 parallelepiped weight 21 A.3 Type 2 parallelepiped weight 22 Appendix B (Normative) Magnetic Measurement Method 23 B.1 Magnetization and susceptibility - susceptibility meter method 23 B.2 Measurement of polarization intensity - magnetometer method 25 Appendix C (Normative) Density (Volume) Measurement Method 27 C.1 General requirements 27 C.2 Notes 27 C.3 Measurement method 1 (volume comparison method - weighing two different weights in air) 28 C.4 Measurement method 2 (weighing standard weights in air and in liquid) 30 C.5 Measurement Method 3 (Direct Measurement Method) 31 C.6 Measurement method 4 (acoustic volume meter method) 32 C.7 Measurement Method V (Alloy Composition Method) 33 C.8 Measurement Method VI (Geometric Measurement) 34 Appendix D (Normative) Agreed Quality Measurement Methods 36 D.1 General 36 D.2 Measuring cycle 36 D.3 Cyclic method for comparative measurements 36 D.4 Measurement mode 38 Reference 40 Figure A.1 Example of cylindrical weights 20 Figure A.2 Example of parallelepiped weight type 1 21 Figure A.3 Example of type 2 parallelepiped weights 22 Figure B.1 Schematic diagram of magnetic measurement 23 Figure C.1 Schematic diagram of density (volume) measurement method --- volume comparison method 29 Figure C.2 Schematic diagram of density (volume) measurement method --- direct measurement method 31 Figure C.3 Schematic diagram of density (volume) measurement method --- acoustic volume meter method 32 Figure C.4 Outline of cylindrical weights 35 Table 1 Absolute value of the maximum permissible error of the weight (|MPE|) 4 Table 2 Shapes of weights not exceeding 1g 7 Table 3 Limits of polarization intensity μ0M 9 Table 4 Limits of magnetic susceptibility x10 Table 5 Limit values of density (ρmin, ρmax) 10 Table 6 Surface roughness limit 12 Table 7 Maximum number of tags 14 Table 8 Environmental requirements for testing weights of various accuracy levels 15 Table 9 Technical requirements for meteorological parameter measurement equipment in laboratories 15 Table 10 Stability time after cleaning 16 Table 11 Temperature stabilization time 16 Table 12 Test items for factory inspection 18 Table A.1 Cylindrical weight dimensions 20 Table A.2 Dimensions of Type 1 Parallelepiped Weights 22 Table A.3 Dimensions of Type 2 Parallelepiped Weights 22 Table C.1 Water density under different temperature conditions 27 Table C.2 Most commonly used alloys for weights Table 33 Table D.1 Minimum number of measurement cycles 37 Table D.2 5,2,2·,1 Typical measurement mode 38 Table D.3 5,3,2,1 Typical measurement mode 39 Table D.4 Typical measurement modes for 5, 2, 2·, 1-fold weights 39ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 4167-2011 "Weights". Compared with GB/T 4167-2011, except for structural adjustments and editorial changes, In addition, the main technical changes are as follows. a) Special weights suitable for certain test instruments have been added to the scope (see Chapter 1); b) Change the term “reduced mass” to “agreed mass” (see 3.5, 3.1.3 of the.2011 edition); c) Added the definition of weight set (see 3.4); d) The requirements for weight shape have been changed to accommodate special weights (see 5.1.1.4, 5.1.5, and 5.1.1 of the.2011 edition); e) The structure of the weights has been changed. Weights of F2 class greater than 50 kg may consist of a box composed of several parts (see 5.2.2.2, 5.2.2.2 of the.2011 edition); f) Added the requirements for the parallelepiped weight adjustment cavity (see 5.2.3.3); g) Added the requirement that the weight may have one or more adjustment cavities (see 5.2.3.6); h) Added the requirements for factory marking (see 5.9.3); i) Added the method of measuring the polarization intensity of the weight using the magnetometer method (see B.2) j) In the density (volume) measurement method, the hydrostatic comparison method is changed to the volume comparison method (see Appendix C, C.3,.2011 edition). C.3); k) Density (volume) measurement methods include weighing with standard weights in air and in liquid, direct measurement, and acoustic volume meter. Four methods including measurement method and geometric measurement method (see C.4, C.5, C.6 and C.8); Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by China Light Industry Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Weighing Instruments (SAC/TC97). This document was drafted by. Penglai Shuiling Weight Factory, China Testing Technology Research Institute, Changzhou Fuyue Weight Co., Ltd., China Metrology Science and Technology Co., Ltd. Institute of Metrology, Changshu Jinyang Weight Instrument Co., Ltd., and Zhejiang Institute of Metrology. The main drafters of this document are Yu Shuiling, Wang Jingxuan, Dang Zhengqiang, He Zhimin, Wu Di, Xu Hong and Ge Rui. The previous versions of this document and the documents it replaces are as follows. ---First published as GB/T 4167-1984 in 1984 and first revised in.2011; ---This is the second revision.IntroductionQuality inspection technology plays an increasingly important role in economic development, and weights are widely used measuring instruments in quality inspection. Weights are usually used as standard instruments for measurement verification and calibration of weighing instruments. At present, there are many weight manufacturers at home and abroad, and their technical level is The levels of weights vary. Metrology technical institutions in various provinces and cities, large factories and mines, colleges and universities, and scientific research institutes have different requirements for the use of weights of different levels. At the same time, with the rapid development of various types of weighing instruments in China, verification institutions, third-party calibration laboratories and weighing instruments There is a huge demand for weights among users. On May 21,.2019, the mass unit began to adopt the new definition of the kilogram given by the International Committee for Weights and Measures. using the fixed Planck constant. The value is used as the unit of mass. Various countries are conducting research on miniaturization of mass value reproduction devices and flattening of traceability methods to achieve the The level can be directly traced back to physical constants. As an important carrier for the reproduction of mass values, weights need to be combined with the new form after the mass unit is redefined. We should formulate national standards based on the trend to meet long-term market demand. Weights1 ScopeThis document specifies the classification, metrological requirements, technical requirements, inspection rules and marking, packaging, transportation, storage of weight products, and describes the relevant Appropriate test method. This document applies to weights of grades E1, E2, F1, F2, M1, M1-2, M2, M2-3 and M3 with a nominal mass range of 1 mg to 5000 kg. Special weights (single or in sets) intended for use with measuring instruments are also covered by this document.2 Normative referencesThe contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 2040 Copper and copper alloy plates GB/T 4423 Copper and copper alloy drawn bars GB/T 8163 Seamless steel pipe for conveying fluids GB/T 9439 Grey iron castings GB/T 13384 General technical requirements for packaging of electromechanical products GB/T 14250 Terminology of Weighing Instruments GB/T 20878 Stainless steel grades and chemical compositions JJF1229 Mass density measurement terms and definitions3 Terms and definitionsThe terms and definitions defined in GB/T 14250, JJF1229 and the following apply to this document. 3.1 A specification that specifies the relevant physical and metrological characteristics. shape, size, material, surface condition, density, magnetic properties, nominal mass and maximum permissible mass. A physical measuring tool for measuring mass (of an object) with allowable error. [Source. GB/T 14250-2008, 4.3.4] 3.2 Accuracy level accuracyclasses The name of the grade of weights or weight sets that meet specified metrological requirements and keep the weight value within specified error limits. 3.2.1 E1 grade weight classE1 Traceable to national standards and sub-standards, used for measuring E2 grade weights and scales (balances) of corresponding accuracy levels, and corresponding Weights used with a weighing instrument (balance). ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 4167-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 4167-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 7 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 4167-2024_English with my colleagues?Answer: Yes. 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Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4167-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
