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JJG 736-2012 English PDF

US$419.00 · In stock
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JJG 736-2012: Verification Regulation of Gas Laminar Flow Transducers
Status: Valid

JJG 736: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 736-2012	English	419	Add to Cart	3 days [Need to translate]	Verification Regulation of Gas Laminar Flow Transducers	Valid	JJG 736-2012
JJG 736-1991	English	439	Add to Cart	4 days [Need to translate]	Verification Regulation of Gas Laminar Flow Transducter	Obsolete	JJG 736-1991

PDF similar to JJG 736-2012

Standard similar to JJG 736-2012

GB/T 36126 JJG 762 GB/T 1885 JJG 159 JJG 126 JJG 743

Basic data

Standard ID	JJG 736-2012 (JJG736-2012)
Description (Translated English)	Verification Regulation of Gas Laminar Flow Transducers
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A53
Classification of International Standard	17.120
Word Count Estimation	18,193
Older Standard (superseded by this standard)	JJG 736-1991
Quoted Standard	JJF 1001-2011; JJF 1004-2004; OIML R137-1-2006
Regulation (derived from)	AQSIQ Announcement No. 132 of 2012
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to gas laminar flow sensor initial verification, testing and use of follow-up checks.

JJG 736-2012: Verification Regulation of Gas Laminar Flow Transducers

---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 Gas Laminar Flow Transducers State verification procedures People's Republic of China Laminar gas flow sensor Issued on. 2012-09-03 2013-03-03 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Laminar gas flow sensor verification procedures Replacing JJG 736-1991 Focal point. the National Technical Committee on Metering flow capacity Main drafting unit. Tianjin Institute of Supervision and Testing Weighing Participated in the drafting. Zhejiang Provincial Institute of Metrology Boyi (Tianjin) Co., Ltd. Pneumatic Technology Institute This procedure flow capacity commissioned the National Technical Committee responsible for the interpretation of measurement The main drafters of this procedure. Guo Tong (Tianjin Supervision and Testing Institute of Metrology) Liu in (Tianjin Institute of Supervision detection measurement) Drafters participate. Zhan Zhijie (Zhejiang Institute of Metrology) Nai g (Boyi (Tianjin) Co., Ltd. Pneumatic Technology Institute) Xi Steel (Tianjin Supervision and Testing Institute of Metrology) Ai Zi Wei (Bo Yi (Tianjin) Co., Ltd. Pneumatic Technology Institute)

1 Scope (1) 2. References (1) 3 Terms and definitions (1) 4 Overview (2) 4.1 Purpose and Structure (2) 4.2 works (2) 5 metering performance requirements (3) 5.1 accuracy class (3) 5.2 The maximum permissible error (3) 5.3 Repeatability (3) 6 General Requirements (3) 6.1 nameplate and logo (3) 6.2 random file (3) 6.3 Appearance (3) Tightness 6.4 (3) 7 control of measuring instruments (3) 7.1 test conditions (4) 7.2 test items and test methods (4) 7.3 Verification Results Processing (8) 7.4 test cycle (8) Appendix A gas laminar air flow sensor viscosity correction factor ξ value table (9) Appendix B gas laminar flow sensor calibration record format (10) Appendix C test certificate-page format (12) Appendix D test results in the notice page format (13) Laminar gas flow sensor verification procedures

1 Scope

The order applies to laminar gas flow sensor (hereinafter referred to as sensors) initial verification, subsequent verification and make With a check. 2. References This procedure references the following documents. JJF1001-2011 common measurement terms and definitions JJF1004-2004 flow measurement terminology and definitions OIMLR137-1.2006 Gas Meters, Part 1 Basic requirements (GasMetersPart 1Re- quirements) For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 Terms and definitions

JJF1001-2011 "common measurement terms and definitions", JJF1004-2004 "flow measurement terminology and reference Meaning "in the relevant terms and definitions apply to this procedure. Cited below some of the most relevant definitions and lists a number of appropriate Other definitions used in this Directive. 3.1 Laminar laminarflow Compared with the inertia force, viscous force plays a major role in the flow. Laminar flow is stratified fluid particle motion to do in the stratosphere Between mixed flow does not occur. 3.2 Newtonian fluid Newtonianfluid Newtonian fluid is defined as the force after easily deformed, and a low viscosity fluid shear stress and deformation rate proportional. 3.3 incompressible fluid incompressiblefluid Volume does not change with temperature and pressure changes of the fluid, incompressible fluid is absolutely non-existent. 3.4 laminar gas flow sensor gaslaminarflowtransducer Is a case of using a laminar flow conditions, the flow rate of fluid through the fluid mechanics and differential pressure produced by the sensor is proportional to the system A flow rate measuring apparatus. 3.5 Transitional Flow qt transitionalflow-rateqt At maximum flow and minimum flow value between flow, it will flow range is divided into two different maximum permissible error Districts, or "high zone" and "low zone" transitional flow qt should be 0.2 times the maximum flow. 3.6 sensor coefficient K0 transducercoefficientK0 (293.15K, 101.325kPa), corresponding to the measured volume flow and pressure ratio under standard conditions. can Under laboratory conditions to obtain the calibration.

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