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JJG 158-2013: Verification Regulation of Compensated Micro-manometer
Status: Valid JJG 158: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 158-2013 | English | 439 |
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4 days [Need to translate]
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Verification Regulation of Compensated Micro-manometer
| Valid |
JJG 158-2013
|
| JJG 158-1994 | English | 599 |
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4 days [Need to translate]
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Verification Regulation of Standard Compensated Micro-manometer
| Obsolete |
JJG 158-1994
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| JJG 158-1975 | English | RFQ |
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3 days [Need to translate]
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(Chinese Industry Standard)
| Obsolete |
JJG 158-1975
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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| A53 | | Classification of International Standard | 17.100 | | Word Count Estimation | 19,162 | | Older Standard (superseded by this standard) | JJG 158-1994 | | Issuing agency(ies) | State Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard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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