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JJG 743-2018 English PDF

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JJG 743-2018: Flow Cup Viscometers
Status: Valid

JJG 743: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 743-2018English369 Add to Cart 4 days [Need to translate] Flow Cup Viscometers Valid JJG 743-2018
JJG 743-1991English239 Add to Cart 3 days [Need to translate] Verification Regulation of Flow Cups Viscosimeter Obsolete JJG 743-1991

PDF similar to JJG 743-2018


Standard similar to JJG 743-2018

GB/T 36126   JJG 762   GB/T 1885   JJG 159   JJG 126   JJG 736   

Basic data

Standard ID JJG 743-2018 (JJG743-2018)
Description (Translated English) Flow Cup Viscometers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Word Count Estimation 16,134
Date of Issue 2018-06-25
Date of Implementation 2018-12-25
Older Standard (superseded by this standard) JJG 743-1991
Regulation (derived from) State Administration of Markets, Announcement No. 13 of 2018
Issuing agency(ies) State Administration for Market Regulation

JJG 743-2018: Flow Cup Viscometers

---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.
Flow Cup Viscometers National Metrology Verification Regulations of the People's Republic Outflow cup viscometer Published on.2018-06-25 2018-12-25 implementation State Administration of Markets issued Outflow cup viscometer verification procedure Replace JJG 743-1991 Focal Point. National Physical and Chemical Metrology Technical Committee Drafted by. China Institute of Metrology Liaoning Institute of Metrology This procedure entrusts the National Physical and Chemical Metrology Technical Committee to explain Drafters of this procedure. Zhang Zhengdong (China Institute of Metrology) 靳彤 (China Institute of Metrology) Tao Cheng (Liaoning Institute of Metrology)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 Overview (1) 4 Metrology performance requirements (1) 5 General technical requirements (1) 6 measuring instrument control (2) 6.1 Verification conditions (2) 6.2 Verification method (2) 6.3 Processing of verification results (4) 6.4 Verification cycle (4) Appendix A Reference Material Selection Reference Range (5) Appendix B Standard Outflow Time Calculation Formula (6) Appendix C Verification Record Format (8) Appendix D Verification Certificate and Verification Result Notification Form (9)

Introduction

This regulation adopts JJF1001-2011 "General Measurement Terms and Definitions" and JJF1002-2010 "National Metrology Inspection" Rules for the preparation of rules, JJF1059.1-2012 "Evaluation and Representation of Measurement Uncertainty" for basic norms Revised. Compared with the version of JJG 743-1991, the main contents of this revision are as follows. ---Add "Introduction", "Reference Documents" and "Overview"; ---Add coating-1, Tu-4, portable coating-4, ISO -5, and Ford series outflow cup viscometer Verification content; --- Increase the reproducibility of the correction factor in the measurement performance requirements; ---The temperature range of the verification is changed from (20~30) °C of the original procedure to no specific limit, as long as the viscosity meter Allowable temperature; --- Modify the outflow cup calibration standard material selection reference, see Appendix A; --- Increase the standard outflow time calculation formula, see Appendix B; --- Modify the original record and verification certificate format, see Appendix C and Appendix D. The previous versions of this procedure are released as follows. ---JJG 743-1991. Outflow cup viscometer verification procedure

1 Scope

This procedure applies to the flow-out cups of Tu-1, Tu-4, Portable Tu-4, ISO Series and Ford Series. Viscosity meter (hereinafter referred to as viscometer) for the first verification, subsequent verification and in-use inspection.

2 reference files

This procedure refers to the following documents. GB/T 1723 coating viscosity measurement method GB/T 6753.4 Paint and varnish with outflow cup to determine the outflow time Standard Test Method for Viscosity Determination by ASTMD1200 Ford Viscosity Cup Method (StandardTestMethodfor ViscositybyFordViscosityCup) 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 Overview

Viscosity meter is the most widely used viscosity measuring equipment in the coating industry. It is economical and easy to operate. specialty. Its working principle is to use the sample to generate flow under the action of its own gravity, with a certain amount of sample in a certain The viscosity of the sample is described by the time that it flows out of the viscometer at temperature.

4 Metrological performance requirements

The first verification, subsequent verification and in-use inspection of the viscometer shall meet the requirements of Table 1. Table 1 Measurement performance requirements Viscometer measuring Repeatability Correction factor Recurrence Correction factor error Tu-1, Tu-4, portable Paint-4, Ford Series ISO series ≤2% ≤3% ≤5% ≤3%

5 General technical requirements

The inner surface of the viscometer is smooth and must not have any willows and scratches. The inner wall of the viscometer outflow pipe shall be smooth without burrs, and the connection between the outflow pipe and the inner wall of the cup shall be smooth, after replacing the outflow pipe There must be no gaps.

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