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JJG 444-2023 English PDF

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JJG 444-2023: Standard Rail - Weighbridges
Status: Valid

JJG 444: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 444-2023English399 Add to Cart 4 days [Need to translate] Standard Rail - Weighbridges Valid JJG 444-2023
JJG 444-2005English759 Add to Cart 4 days [Need to translate] Verification Regulation of Standard Rail-weighbridges Obsolete JJG 444-2005
JJG 444-1986English359 Add to Cart 3 days [Need to translate] Verification Regulation of Master Railway Truck Scales Obsolete JJG 444-1986

Standard similar to JJG 444-2023

JJG 134   JJG 249   JJG 443   

Basic data

Standard ID JJG 444-2023 (JJG444-2023)
Description (Translated English) Standard Rail - Weighbridges
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 18,156
Date of Issue 2023-03-15
Date of Implementation 2023-09-15
Issuing agency(ies) State Administration for Market Regulation

JJG 444-2023: Standard Rail - Weighbridges

---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.
National Metrology Verification Regulations of the People's Republic of China JJG 444-2023 Standard Rail Scale Standard Rail - Weighbridges Released on 2023-03-15 2023-09-15 Implementation Released by the State Administration for Market Regulation Standard Rail Scale Verification Regulations Standard Rail - Weighbridges Replace JJG 444-2005 Responsible unit: National Railway Special Measuring Instruments Metrology Technical Committee Railway Special Mechanics Sub-Technical Committee Drafting unit: National Rail Scale Metrology Station Beijing Huaheng New Technology Development Company Institute of Standards and Metrology, China Academy of Railway Sciences Group Co:, Ltd: This regulation entrusts the Railway Special Mechanics Branch of the National Railway Special Measuring Instrument Metrology Technical Committee The technical committee is responsible for explaining The main drafters of this regulation: Li Shilin (National Rail Weighing and Measuring Station) Duan Xiaojun (National Railway Weighing and Measuring Station) Gao Changlu (National Rail Weighing and Measuring Station) Jiang Huizeng (Beijing Huaheng New Technology Development Company) Cui Baoxiang (Institute of Standards and Metrology, China Academy of Railway Sciences Group Co:, Ltd:) Participating drafters: Wu Jun (Institute of Standards and Metrology, China Academy of Railway Sciences Group Co:, Ltd:) Li Xuebao (Institute of Standards and Metrology, China Academy of Railway Sciences Group Co:, Ltd:)

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(1) 5 Metrological performance requirements (2) 5:1 Accuracy classes(2) 5:2 Actual division value(2) 5:3 Zeroing accuracy(2) 5:4 Zero value(2) 5:5 Eccentric load(2) 5:6 Weighing (2) 5:7 Discrimination threshold (2) 5:8 Repeatability(2) 6 General technical requirements (3) 6:1 Appearance(3) 6:2 Installation Requirements(3) 7 Measuring Instrument Control(3) 7:1 Test conditions (3) 7:2 Verification items (4) 7:3 Verification method (4) 7:4 Processing of test data (6) 7:5 Processing of verification results (7) 7:6 Verification period(7) Appendix A Verification Record Format (Recommended) (8) Appendix B Format of the inner page of the verification certificate (recommended) (11) Appendix C Format of the inner page of the test result notification (recommended) (12)

Introduction

This regulation refers to OIMLR76-1:2006 "Non-automatic Weighing Instruments Part 1: Measurement and Technical Requirements-Test" ments-Tests), combined with the actual situation of the development of standard rail scales in my country, the JJG 444-2005 "Standard Rail Scale Balance" has been revised: Compared with JJG 444-2005 "Standard Rail Scale", except for editorial modifications, the main changes in this regulation are as follows: ---Introduction added; --- Updated the verification equipment; --- Increase the follow-up verification method of eccentric load, adjust the number of eccentric load verification; ---The scope of weighing verification is expanded to (18~100)t, the 60t weighing point is deleted, and the 18t and 100t weighing points are added point, adjust the number of checks; --- Increased the verification method with the extended indicator device: The previous releases of this regulation are as follows: ---JJG 444-2005; ---JJG 444-1986: Standard Rail Scale Verification Regulations

1 Scope

This regulation is applicable to the initial verification, subsequent verification and in-use inspection of standard rail scales:

2 References

This procedure references the following documents: JJG 99 Weight Verification Regulations JJF1001 General Metrology Terms and Definitions JJF1181 Weighing Instrument Measurement Terms and Definitions GB/T 2887-2011 General Specifications for Computer Sites OIMLR76-1:2006 Non-automatic Weighing Instruments Part 1: Metrology and Technical Requirements - Test (Non-au- Tests) For dated references, only the dated version applies to this regulation; for undated references document, its latest version (including all amendments) applies to this regulation:

3 Terminology and units of measurement

3:1 Terminology JJF1001 and JJF1181 and the following terms and definitions apply to this regulation: 3:1:1 Standard rail-weighbridge Installed on the railway line in the laboratory, it has electronic devices, digital indication functions and high-accuracy static weighing rail scale: 3:1:2 special vehicle Loading weights are used to test standard rail scales, trolleys with a certain mass value: 3:2 Units of measurement National legal units of measurement are used for quality measurement units: gram (g), kilogram (kg), ton (t):

4 Overview

Principle: Using the principle of leverage, the weighing platform of the standard track scale uses two-stage levers to transfer the weight carried by the weighing platform Transfer to the balance measuring lever, through the logic controller to control the balance measuring lever to automatically reduce weight, weighing sensor and damping The device balances the measuring lever of the balance, and the weighing indication value is multiplied by the total lever ratio and the output quality of the weighing sensor: sum of magnitudes: Structure: consists of foundation, carrier, lever, platform lifting device, damping device, control device, rest device, It is composed of load cell, weighing indicator and other components: Uses: Used to test track scales, check weighing vehicles, etc:

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