JJG 236-2009 English PDF

US$579.00 · In stock
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JJG 236-2009: Verification Regulation of Piston Pressure Vacuum Gauges
Status: Valid

JJG 236: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 236-2009	579	Add to Cart	5 days	Verification Regulation of Piston Pressure Vacuum Gauges	Valid
JJG 236-1994	439	Add to Cart	4 days	Verification Regulation of Standard Piston Gauge for Gauge Pressure Range -0. 1~0. 25MPa (Grade I)	Obsolete
JJG 236-1981	RFQ	ASK	3 days	(Chinese Industry Standard)	Obsolete

Similar standards

JJG 162   GB/T 36126   GB/T 1885   JJG 241   JJG 234   JJG 233   

Basic data

Standard ID: JJG 236-2009 (JJG236-2009)
Description (Translated English): Verification Regulation of Piston Pressure Vacuum Gauges
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A53
Classification of International Standard: 17.100
Word Count Estimation: 25,231
Date of Issue: 2009-07-30
Date of Implementation: 2010-01-30
Older Standard (superseded by this standard): JJG 236-1994; JJG 239-1994
Regulation (derived from): AQSIQ Announcement No. 78 of 2009
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to new manufacture, use and repair after pressure 0. 01 ~ 0. 25MPA, negative pressure (-0. 1 ~ -0. 1) MPa, pressure is (0. 01 ~ 0. 6) MPa oil lubrication, gas pressure medium piston vacuum gauge initial verification, testing and use of follow-up inspection.

JJG 236-2009: Verification Regulation of Piston Pressure Vacuum Gauges

---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 Piston Pressure Vacuum Gauges State verification procedures People's Republic of China Piston type pressure gauge Posted 2009-07-30 2010-01-30 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Piston pressure gauge test procedures es Replacing JJG 236-1994 JJG 239-1994 The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on July 30, 2009, and from From January 30, 2010 into effect. Focal point. the National Technical Committee of pressure measurement Main drafting unit. Shaanxi Provincial Institute of Metrology Participated in the drafting. West Instrument Group Co., Ltd. Dalian metrological verification tests The measurement procedure commissioned the National Technical Committee is responsible for interpreting pressure The main drafters of this procedure. Wang Hongyan (Shaanxi Provincial Institute of Metrology) Li Zhenghua (West Instrument Group Co., Ltd.) Juan Mu (Dalian metrological verification tests) Dingzheng Kang (Shaanxi Provincial Institute of Metrology) Drafters participate. Off Guards (the Shaanxi Provincial Institute of Metrology)

table of Contents

1 Scope (1) 2 Terminology (1) 3 Overview (1) 4 metering performance requirements (2) 4.1 accuracy class (2) 4.2 effective area of the piston (2) 4.3 special weight (2) 4.4 verticality (3) 4.5 the duration of the rotation of the piston (3) Lowering speed 4.6 (3) 4.7 discrimination (3) Tightness 4.8 (4) 4.9 Periodic effective area rate of change of the piston (4) 5 General technical requirements (4) 5.1 Appearance (4) 5.2 piston system (4) 5.3 special weight and load-bearing plate (4) 6 Control of measuring instruments (4) 6.1 Verification Project (5) 6.2 test conditions (5) 6.3 Verification Methods (6) Processing 6.4 Verification Results (10) 6.5 test cycle (10) Appendix A piston pressure gauge test record format (11) Appendix B test certificate-page format (14) Appendix C test results in the notice page format (15) Appendix D gravity Chinese major cities (16) Piston pressure gauge test procedures

1 Scope

The order applies to the measurement range of negative pressure (-0.01 ~ -0.1) MPa, positive pressure (0.01 ~ 0.6) MPa Oil lubrication, piston pressure gas medium gauge initial verification, subsequent verification and in-service inspection.

2 Terminology

Cycle rate periodicchangerate Within a specified time interval, the percentage of the difference between the two test results. Periodic changes in the effective area of the piston is mainly to ensure the appropriate level as a piston-type pressure gauge can Meet the requirements of long-term stability.

3 Overview

Piston pressure gauge is the use of hydrostatic balance principle, which is acting on the piston effective area of fluid Principle of pressure and its load of gravity equilibrium pressure measurement Measurement Standard. A piston type pressure gauge By a piston-like system, special weight, spinner components, mainly used for pressure values and the pressure transmitting instruments Verification, calibration and testing. Works shown in Figure 1. Figure 1 piston pressure vacuum gauge operating principle ......

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