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JJG 540-2019 English PDF

US$319.00 · In stock
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JJG 540-2019: Liquid Manometers for Working
Status: Valid

JJG 540: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 540-2019	English	319	Add to Cart	3 days [Need to translate]	Liquid Manometers for Working	Valid	JJG 540-2019
JJG 540-1988	English	279	Add to Cart	3 days [Need to translate]	Verification Regulation of Liquid Manometer for Working	Obsolete	JJG 540-1988

PDF similar to JJG 540-2019

Standard similar to JJG 540-2019

GB/T 36126 JJG 577 GB/T 1885 JJG 126 JJG 539 JJG 544

Basic data

Standard ID	JJG 540-2019 (JJG540-2019)
Description (Translated English)	Liquid Manometers for Working
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Classification of International Standard	17.100
Word Count Estimation	14,148
Date of Issue	2019
Date of Implementation	2020-03-31
Issuing agency(ies)	State Administration for Market Regulation

JJG 540-2019: Liquid Manometers for Working

---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.
(Verification Regulation of Working Liquid Pressure Gauge) National Measurement Verification Regulations of the People's Republic of China Working liquid pressure gauge Published on December 31,.2019 2020-03-31 Implementation Issued by the State Administration of Market Supervision and Administration Working liquid pressure gauge Verification regulations Replace JJG 540-1988 Centralized unit. National Pressure Measurement Technical Committee Drafting unit. Shanxi Institute of Metrology Xinjiang Uygur Autonomous Region Metrology and Testing Institute Zhejiang Academy of Metrology Tianjin Academy of Metrology and Inspection Science Shanghai Institute of Metrology and Testing Technology This regulation is entrusted to the National Pressure Measurement Technical Committee for interpretation Drafters of this regulation. Zhang Jinliang (Shanxi Institute of Metrology) Zhuohua (Xinjiang Uygur Autonomous Region Metrology and Testing Institute) Cai Fei (Zhejiang Institute of Metrology) Guo Zhiming (Tianjin Metrology Supervision and Inspection Science Research Institute) Yan Xiang (Shanxi Institute of Metrology) Gao Wei (Shanxi Institute of Metrology) Wang Can (Shanghai Institute of Metrology and Testing Technology)

Introduction (Ⅱ) 1 Scope (1) 2 References (1) 3 Terms and units of measurement (1) 3.1 Terminology (1) 3.2 Unit of measurement (1) 4 Overview (1) 5 Measurement performance requirements (2) 5.1 Indication error (2) 5.2 Zero point error (2) 5.3 Tightness (2) 6 General technical requirements (2) 6.1 Appearance (2) 7 Control of measuring instruments (2) 7.1 Verification conditions (3) 7.2 Verification items (3) 7.3 Verification method (3) 7.4 Processing of verification results (5) 7.5 Verification period (5) Appendix A Working Record Format of Working Liquid Pressure Gauge (6) Appendix B. Format of the verification result page for the verification certificate of working liquid pressure gauge (7) Appendix C. Verification Result Page Format for Work Liquid Pressure Gauge Verification Result Notice (8)

Introduction

JJF1002 "Rules for Compiling National Metrological Verification Regulations", JJF1001 "General Metrology Terms and Definitions", JJF1059.1 "Measurement Uncertainty Evaluation and Representation" together constitute the basic series of specifications for the revision of this code. This regulation is based on JJG 540-1988 "Working Liquid Pressure Gauge (Trial)" Under the premise of effective content. Compared with JJG 540-1988, this regulation has the main The technical requirements change as follows. ---According to the requirements of JJF1002-2010, the content of the introduction and the terms and units of measurement are added; ---Removed the relevant content with mercury as the working medium; --- The measurement range has been adjusted properly; ---Zero change amount is changed to zero error; ---The ratio of the absolute value of the maximum allowable error of the standard device to the absolute value of the maximum allowable error of the tested pressure gauge is from 1/3 Change to 1/4; --- The concept of "instrument constant" is no longer used; --- Delete the contents of Appendix 2 of the original regulations, and rewrite the contents of Appendix 2 and Appendix 3. The previous releases of this regulation are. ---JJG 540-1988. Verification Regulation of Working Liquid Pressure Gauge

1 Scope

This regulation is applicable to the first inspection of working U-shaped and cup-shaped liquid pressure gauges with an upper limit of 20kPa and below Inspection, follow-up inspection and inspection in use.

2 Reference documents

This regulation refers to the following documents. JJF1008-2008 Terms and definitions of pressure measurement terms JB/T 6803.1 Liquid pressure gauge is generally cup-shaped, U-shaped pressure gauge For dated references, only the dated versions are applicable to this Regulation; for those without dates The latest version (including all amendments) is applicable to this regulation.

3 Terms and units of measurement

3.1 Terminology 3.1.1 liquidmanometer A pressure gauge made with the principle that the pressure generated by the liquid's own weight is balanced with the measured pressure. [JJF1008-2008, definition 3.1] 3.1.2 U-tubeliquidmanometer The indicating tube is a U-shaped structure, which is a liquid manometer for measuring pressure. [JJF1008-2008, definition 3.2] 3.1.3 Single-tube [cup-shaped] liquid pressure gauge one-tubeliquidmanometer The indicating tube on one side of the U-shaped tube is made into a cup-shaped container, and the inner diameter of the single tube and the cup-shaped container is kept at a certain ratio Liquid pressure gauge. [JJF1008-2008, definition 3.3] 3.2 Unit of measurement The legal unit of measurement for working liquid pressure gauges is Pa (Pascal), or its decimal multiple unit kPa etc.

4 Overview

The working liquid pressure gauge (hereinafter referred to as liquid pressure gauge) is the pressure and measured pressure generated by the weight of the liquid column Phase balance, the instrument to determine the measured pressure according to the height of the liquid column. The working medium of the liquid pressure gauge is a non-toxic, harmless, chemically stable liquid, which is mainly used for positive pressure and negative pressure. The measurement of pressure and differential pressure is U-shaped and cup-shaped.

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