Powered by Google-Search & Google-Books www.ChineseStandard.net Database: 169759 (Feb 21, 2021)
HOME   Quotation   Tax   Examples Standard-List   Contact-Us   View-Cart

JJG 46-2018

Chinese Standard: 'JJG 46-2018'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
JJG 46-2018English279 Add to Cart Days<=3 Torsion Balance Valid JJG 46-2018
JJG 46-2018Chinese18 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]  


Standard ID JJG 46-2018 (JJG46-2018)
Description (Translated English) Torsion Balance
Sector / Industry Metrology & Measurement Industry Standard
Word Count Estimation 14,114
Date of Issue 2018-12-25
Date of Implementation 2019-06-25
Older Standard (superseded by this standard) JJG 46-2004
Drafting Organization China Institute of Metrology, Xinjiang Institute of Metrology and Testing
Administrative Organization National Quality Density Measurement Technical Committee
Regulation (derived from) State Administration of Markets, Announcement No. 34 of 2018
Issuing agency(ies) State market supervision and administration

JJG 46-2018
(Torque balance verification procedure)
National Metrology Verification Regulations of the People's Republic
Torque balance
Published on.2018-12-25
2019-06-25 implementation
State Market Supervisory Administration released
Torque balance verification procedure
Replace JJG 46-2004
Focal Point. National Quality Density Measurement Technical Committee
Main drafting unit. China Institute of Metrology
Xinjiang Institute of Metrology and Testing
Participated in drafting unit. Shanghai Institute of Metrology and Testing Technology
This regulation entrusts the National Quality Density Measurement Technical Committee to explain
The main drafters of this procedure.
Yao Hong (China Institute of Metrology)
Xu Qiusha (Xinjiang Metrology and Testing Institute)
Participate in the drafters.
Su Shi (Shanghai Institute of Metrology and Testing Technology)
Jiao Kai (China Institute of Metrology)
table of Contents
Introduction II
1 range 1
2 References 1
3 terms and units of measurement 1
3.1 Term 1
3.2 Unit of measurement 1
4 Overview 1
5 Metrology performance requirements 2
5.1 Basic parameters 2
5.2 Metrology performance 2
6 General technical requirements 3
6.1 Appearance 3
6.2 Structural requirements 3
7 measuring instrument control 3
7.1 Verification conditions 3
7.2 Verification project 4
7.3 Verification method 4
7.4 Processing of verification results 5
7.5 Verification cycle 5
Appendix A Torque Balance Verification Original Record Format 6
Appendix B Torque Balance Verification Certificate Page 7
Appendix C Torque Balance Verification Result Notice Page Format 8
JJG 46 "Torque Balance" adopts the accuracy level in the current JJG 98 "Mechanical Balance", retaining the original
Level, and refer to its technical indicators and requirements, modify JJG 46-2004 "Torsion Balance".
Compared with JJG 46-2004, in addition to editorial changes, the main technical changes are as follows.
--- Add "cited literature" and "terms and units of measurement" section;
--- Added a map of the torsion balance in the overview;
--- Modified 3.1 basic parameters;
--- Removed the 3.3 accuracy level;
--- Deleted Table 1, changed to text description Table 1 content;
---Modified the "maximum allowable error" table for the "no-load indication repeatability" requirement, changed from "≤0.5e"
Is "≤1e";
--- Deleted Table 4, changed to a general description of the calibration scale weight;
---Modify "loading and unloading value repeatability" to "full load indication repeatability";
--- According to the description of the text, the corresponding record form and the format of the certificate page are modified.
The previous versions of this procedure are released as follows.
---JJG 46-2004;
---JJG 46-1976.
Torque balance verification procedure
1 Scope
This procedure applies to the first verification, subsequent verification and use of precision torsion balances (hereinafter referred to as "balances").
an examination.
2 reference files
JJG 98 mechanical balance
JJF1229 Quality Densitometry Terms and Definitions
OIMLR76-1.2006 Non-automatic weighing instruments - Part 1. Measurements and technical requirements test (Non-auto-
maticweightinginstruments-Part 1.Metroologicalandtechnicalrequirements-Tests)
For dated references, only the dated version applies to this Code; any undated quotation
The latest version (including all amendments) applies to this procedure.
3 terms and units of measure
3.1 Terms
3.1.1 Sensitivity sensitivity
When the reading pointer moves a verification index value e, the deviation between the verification pointer and the verification mark is verified.
3.1.2 weight conversion quality value conventionalmassvalueofweight
When the weight is balanced with a standard weight of a predetermined density in the air of the agreed temperature and the agreed density, the standard
The quality of the standard weight.
3.1.3 actual scale value (d) actualscaleinterval
The difference between the values corresponding to the two adjacent ruler marks.
3.1.4 verification scale value (e) verificationscaleinterval
The value expressed in mass units used to characterize and classify the instrument.
3.1.5 Verification of the number of divisions (n) numberofverificationscaleintervals
Measure the ratio of the maximum weighing Max of the instrument to the verification index value e, n=
3.2 Unit of measurement
The mass unit used for the balance is. milligrams (mg).
4 Overview
The main structure of the balance is composed of a single-arm lever and a combination of two elastic elements, a flat coil spring and a leaf spring.
The weight is simply rotated by the reading knob and the balance torque generated by the deflection angle of the elastic element is used for the measurement. In the horizontal
One end of the beam is equipped with a quick stop damper, so that the beam swing can be stopped in a few seconds, so that it can be quickly read and measured.
Related standard: JJG 28-2019    JJG 98-2019