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JJG 158-2013 English PDF

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JJG 158-2013: Verification Regulation of Compensated Micro-manometer
Status: Valid

JJG 158: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 158-2013English439 Add to Cart 4 days [Need to translate] Verification Regulation of Compensated Micro-manometer Valid JJG 158-2013
JJG 158-1994English599 Add to Cart 4 days [Need to translate] Verification Regulation of Standard Compensated Micro-manometer Obsolete JJG 158-1994
JJG 158-1975EnglishRFQ ASK 3 days [Need to translate] (Chinese Industry Standard) Obsolete JJG 158-1975

PDF similar to JJG 158-2013


Standard similar to JJG 158-2013

JJG 162   GB/T 36126   GB/T 1885   JJG 166   JJG 159   

Basic data

Standard ID JJG 158-2013 (JJG158-2013)
Description (Translated English) Verification Regulation of Compensated Micro-manometer
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.100
Word Count Estimation 19,154
Older Standard (superseded by this standard) JJG 158-1994
Regulation (derived from) AQSIQ Announcement No. 88 of 2013
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to the measurement range (-2. 5 ~ 2. 5) kPa compensation micro-manometer (hereinafter referred to as micro-manometer) the initial verification, testing and use of follow-up inspection.

JJG 158-2013: Verification Regulation of Compensated Micro-manometer

---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 Compensated Micro-manometer State verification procedures People's Republic of China Compensation decline manometer Issued on. 2013-07-04 2014-01-04 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Compensation decline manometer verification procedures Comp Replacing JJG 158-1994 Focal point. the National Technical Committee of pressure measurement Main drafting unit. Zhejiang Institute of Metrology China Institute of Metrology China Testing Technology Research Institute Participated in the drafting unit. Shanghai Institute of Measurement and Testing The measurement procedure commissioned the National Technical Committee is responsible for interpreting pressure The main drafters of this procedure. Cai Fei (Zhejiang Institute of Metrology) CRITICAL (China Institute of Metrology) Gan Rong (China Testing Technology Research Institute) Drafters participate. Li Hu Central (Shanghai Institute of Measurement and Testing) Tubin Bin (Zhejiang Institute of Metrology) Sun Guohua (Zhejiang Institute of Metrology)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 Overview (1) 3 metering performance requirements (2) 3.1 measuring range, dividing the value and accuracy class (2) 3.2 The maximum permissible error (2) Tightness 3.3 (2) 3.4 Compressive strength (2) Zero misalignment 3.5 (2) 3.6 Zero response error, (2) 4 General Requirements (3) 4.1 Appearance (3) 4.2 Zero means (3) 5 control of measuring instruments (3) 5.1 test conditions (3) 5.2 Verification Project (3) 5.3 Verification Methods (4) 5.4 test results processing (5) 5.5 test cycle (6) Appendix A micro-pressure gauge test recording format (7) Appendix B micro-pressure meter calibration certificate/test results in the notice page format (8) Appendix C China's major cities gravity value table (11) Appendix D of pure water at standard atmospheric density value table (12)

Introduction

JJF1002 "national verification procedures write rules", JJF1001 "common measurement terms and definitions", JJF1059 "Evaluation and Expression of Uncertainty in Measurement" series together constitute the basic norms of the regulations revision. This procedure is in JJG 158-1994 "standard compensation decline manometer" on the basis of effective content retention Revision of the premise. This procedure compared with JJG 158-1994, in addition to editorial changes, the major technological change as follows. --- Press JJF1002-2010 "national verification procedures write rules" requirement, increase the introduction of content; --- Added "measuring range, dividing the value and accuracy class" technical requirements; --- Maximum permissible error compensation decline technical indicators expressed manometer has been modified; --- Original order "tightness" technical indicators name to "compressive strength" and the other by "sealing" technology index; --- Specifies the estimated time to compensate the decline of the median value of the pressure gauge; --- Correct errors in the original statutes air density formula; --- The original test procedure Appendix recording format has been amended accordingly; --- Added "test certificate/test results within the notice page and Format" appendix. JJG 158-1994 of previous editions of --- JJG 158-1975 Compensation decline manometer verification procedures

1 Scope

The order applies to the measurement range (-2.5 ~ 2.5) kPa compensation decline manometer (hereinafter referred to as micro-manometer) The initial verification, use and subsequent verification check.

2 Overview

Micro-pressure gauge is mainly composed of large containers and small containers, vertical scale, rotate scale readings pointed, flat mirror, zero Nut shell portion and the like, the structure is schematically shown in Figure 1. 1 a schematic diagram of the structure of micro-pressure gauge 1- connecting hose; 2- negative mouthend; 3 - a large container; 4- vertical ruler; 5- rotating ruler; 6- positive then the mouth; 7- zero nut; 8- small container; 9- reading tip; 10- mirror Micro-pressure gauge works decreased by raising a large container to compensate for the pressure caused by the position of a small container of water, So small container water restored to its original null position, which adopts the principle of compensation, so that the level difference between the size of the container produced Pressure and measured pressure equilibrium. Micro-pressure gauge can measure small pressure non-corrosive gases (positive, negative and differential pressure). Primarily as a micro-pressure standard Quasi money transfer is carried out, it can be used for precision measurement of micro-pressure values.

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