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JJG 172-2011 English PDF

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JJG 172-2011: Verification Regulation of Tilting Tube Micromanometers
Status: Valid

JJG 172: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 172-2011English399 Add to Cart 3 days [Need to translate] Verification Regulation of Tilting Tube Micromanometers Valid JJG 172-2011
JJG 172-1994English279 Add to Cart 3 days [Need to translate] Verification Regulation of Tilting Tube Micro-manometer Obsolete JJG 172-1994
JJG 172-1984EnglishRFQ ASK 3 days [Need to translate] Verification Regulation of Tilting - Tube Micromanometer Obsolete JJG 172-1984

PDF similar to JJG 172-2011


Standard similar to JJG 172-2011

JJG 162   GB/T 36126   GB/T 1885   JJG 176   JJG 166   

Basic data

Standard ID JJG 172-2011 (JJG172-2011)
Description (Translated English) Verification Regulation of Tilting Tube Micromanometers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Word Count Estimation 17,129
Date of Issue 2011-12-28
Date of Implementation 2012-06-28
Older Standard (superseded by this standard) JJG 172-1994
Regulation (derived from) AQSIQ Announcement No. 205 of 2011
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to measuring range (-2000 ~ 2000) Pa inclined micro-manometer initial verification, testing and use of follow-up checks.

JJG 172-2011: Verification Regulation of Tilting Tube Micromanometers

---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 Tilting Tube Micromanometers State verification procedures People's Republic of China Tilt micro manometer Issued on. 2011-12-28 2012-06-28 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Tilt micro manometer verification procedures Tilting Replacing JJG 172-1994 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on December 28, 2011, and from From June 28, 2012 into effect. Focal point. the National Technical Committee of pressure measurement Main drafting unit. Shanghai Institute of Measurement and Testing Tianjin Institute of Supervision and Testing Weighing Participated in the drafting. Zhejiang Provincial Institute of Metrology The measurement procedure commissioned the National Technical Committee is responsible for interpreting pressure The main drafters of this procedure. Li Hu Central (Shanghai Institute of Measurement and Testing) Tu Li Meng (Shanghai Institute of Measurement and Testing) Wind-Palace (Tianjin Supervision and Testing Institute of Metrology) Drafters participate. Cai Fei (Zhejiang Institute of Metrology)

table of Contents

1 Scope (1) 2 Overview (1) 3 metering performance requirements (1) 3.1 Measurement range (1) 3.2 Accuracy class and maximum permissible error (1) Tightness 3.3 (2) 4 General Requirements (2) 4.1 Identification (2) 4.2 Appearance (2) 5 control of measuring instruments (2) 5.1 verification Conditions (2) 5.2 Verification Project (3) 5.3 Verification Methods (3) 5.4 test results processing (6) 5.5 test cycle (6) Appendix A decline inclined manometer (inclined tube micro manometer) test recording format (7) Appendix B inclined micro manometer (micro curved tube manometer) verification record format (8) Appendix C major cities in China gravity values table (9) Appendix D inclined micro manometer test certificate within the page format (10) Appendix E inclined micro manometer test results in the notice page format (11) Tilt micro manometer verification procedures

1 Scope

The order applies to the measurement range (-2000 to 2000) the decline manometer inclined Pa initial verification, subsequent Verification and use of checks.

2 Overview

Inclined pressure gauge is based on the decline of the hydrostatic principle, the use of the liquid column height difference between an instrument to measure the pressure. Tilt decline is mainly used for measuring the pressure gauge and differential pressure. Tilt micro structural forms manometer measuring tube into oblique tube (hereinafter referred to as "micro-pressure meter inclined tube", as shown in Figure 1) And curved tube (hereinafter referred to as "micro curved tube manometer", shown in Figure 2) two. Inclined tube micro-manometer to measure the characteristics of the horizontal pipe is angled chute, a small can of liquid column height difference By a certain percentage to enlarge and improve the measurement resolution. Curved pipe is characterized by a micro-manometer measuring tube is designed to tilt - Curves - vertical structure, and can improve the micro pressure measurement The amount of resolution. The working fluid inclined tube micro manometer density is generally 810kg/m3 of ethanol (that is, its volume fraction 95%), slightly curved tube manometer working fluid density is generally 826kg/m3 of kerosene or oil mixture. According to the measurement or Different ranges, the use of other liquids as working medium density inclined micro manometer. Form structure of Figure 1 inclined tube micro manometer measuring tube Form structure of two tube micro manometer measuring tube

3 metering performance requirements

3.1 Measuring range Measurement range (-2000 ~ 2000) Pa. 3.2 accuracy class and the maximum permissible error

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Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 172-2011 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.