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JJG 1132-2017 English PDF

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JJG 1132-2017: Thermal Mass Gas Flowmeters
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PDF similar to JJG 1132-2017


Standard similar to JJG 1132-2017

GB/T 36126   JJG 1107   GB/T 1885   JJG 1136   JJG 1141   JJG 1134   

Basic data

Standard ID JJG 1132-2017 (JJG1132-2017)
Description (Translated English) Thermal Mass Gas Flowmeters
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.120
Word Count Estimation 17,178
Date of Issue 2017-02-28
Date of Implementation 2017-05-28
Older Standard (superseded by this standard) JJG 597-1995
Quoted Standard GB 3836; GB 4208; GB 17820; GB/T 13609; GB/T 13610; GB 50251
Adopted Standard OIML R137-1-2012, NEQ; OIML R137-2-2012, NEQ; ASME MFC-21.1-2010. NEQ; ASME MFC-21.2-2010. NEQ
Regulation (derived from) General Administration of Quality Supervision, Inspection and Quarantine No. 23 of 2017
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This standard applies to the first test of thermal gas mass flowmeter (hereinafter referred to as flow meter), follow-up inspection and inspection. This procedure also applies to the flowmeter verification of the mass flow controller.

JJG 1132-2017: Thermal Mass Gas Flowmeters

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Thermal Mass Gas Flowmeters National Metrological Verification Regulation of the People's Republic of China Thermal gas mass flowmeter 2017-02-28 released 2017-05-28 Implementation State Administration of Quality Supervision, Inspection and Quarantine issued Thermal gas mass flowmeter Verification procedures Replacing JJG 897-1995 Calorimetric mass flowmeter section Responsible Unit. National Traffic Capacity Measurement Technical Committee The main drafting unit. China Institute of Metrology Beijing Institute of Metrology and Testing Participated in the drafting unit. China Testing Technology Research Institute Beijing Qixing Huachuang Electronics Co., Ltd Silicon Microelectromechanical Systems (Shanghai) Co., Ltd Shanghai Endes House Automation Equipment Co., Ltd Huayou Group Chongqing Kay source oil and gas limited liability company This procedure entrusts the National Flow Capacity Measurement Technical Committee to explain The main drafters of this procedure. Duan Huiming (China Institute of Metrology) Yang Youtao (Beijing Institute of Metrology and Measurement Science) Participate in the drafters. Lei Lei (China Testing Technology Research Institute) Zhang liqin (Beijing Qixing Huachuang Electronics Co., Ltd.) Huang Liji [Silicon Microelectromechanical System (Shanghai) Co., Ltd.] Wang Dao Kai (Shanghai Endes House Automation Equipment Co., Ltd.) Tan Xiao-ping (Huayou Group Chongqing Kaiyuan Oil & Gas Co., Ltd.)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Terms (1) 3.2 Unit of measurement (1) 4 Overview (2) 4.1 use and working principle (2) 4.2 Construction (2) 5 Measurement performance requirements (2) 5.1 Accuracy class (2) 5.2 Reference error (2) 5.3 Repeatability (2) 6 General technical requirements (2) 6.1 Random files (2) 6.2 Appearance (2) 6.3 Sealing (3) 7 Metering device control (3) 7.1 Test conditions (3) 7.2 Verification and verification methods (4) 7.3 Verification result processing (7) 7.4 Verification cycle (7) Appendix A Type of thermal gas mass flowmeter (8) Appendix B saturated vapor pressure of water (11) APPENDIX C INSPECTION CERTIFICATE/CERTIFICATION RESULTS The information and format (12)

Introduction

This procedure is in accordance with JJF1002-2010 "national measurement procedures for the preparation of rules" requirements, Learning, the principle of operability, according to JJF1004-2004 "flow meter terminology and definition" GB 3836.1-2010 "Explosive atmospheres Part 1. General requirements for equipment", GB 3836.2-2010 "Explosion Explosive atmospheres - Part 2. Equipment protected by flameproof enclosure "d", GB 3836.3-2010 "Explosive atmospheres Part 3. Equipment protected by increased safety "e", GB/T 4208-2008 "Protection class (IP generation) Code ", GB 50251-2015" gas pipeline engineering design specifications ", GB/T 20727-2006" closed pipeline Fluid flow measurement of thermal mass flow meter, "GB/T 13609-2012" natural gas sampling guidelines " GB/T 13610-2014 "Gas composition analysis of natural gas", GB/T 17747.2-2011 "Natural Calculation of gas compression factor - Part 2. Calculation of molar composition ", OIMLR137-1 Flowmeter "(GasMeters), ASMEMFC-21.1-2010" Capillary Thermal Mass Flowmeter ", ASME MFC-21.2-2010 "thermal diffusion mass flowmeter", combined with China's thermal gas mass flow meter technology level And the industry status quo. And JJG 897-1995 in the "calorie flowmeter" part of the comparison, in addition to editorial modification of the main technology The changes are as follows. --- "calorie flow meter" to "hot gas mass flow meter"; --- Added "Introduction"; - Added "reference documents, terms and units of measurement" (see 2, 3); --- Cancel the "0.1, 0.25 and 0.3" accuracy levels (see 5.1); --- the introduction of the "boundary flow qt" concept, in the same accuracy level by qt ≤ q ≤ qmax and qmin ≤ q qt The maximum allowable error is given in the flow range (see 5.1); --- repeatability from "no more than the basic error limit of 1/2" to "not exceed the maximum allowable error absolute value 1/3 "(see 5.3); - "Installation requirements for flowmeters" are moved from the appendix to the text (see 7.1.5); --- will be "flow meter verification cycle according to the use of certain circumstances, but for trade settlement generally does not exceed 1 year, the other test cycle is generally not more than 2 years "to" flow meter test cycle is generally not more than 2 years " (See 7.4); - Added the type of "hot gas mass flowmeter" (see Appendix A); - Added the appendix "Saturated vapor pressure of water" (see Appendix B); Amend the "Verification Certificate/Verification Result Document Format" (see Appendix C). Prerequisites of this Code Release. --- JJG 897-1995 in the "calorie mass flow meter" part. Test procedure for thermal gas mass flowmeter

1 Scope

This procedure applies to the first verification of the thermal gas mass flow meter (hereinafter referred to as flowmeter), subsequent verification and Check in. This procedure also applies to the flowmeter verification of the mass flow controller.

2 reference file

This procedure refers to the following documents. Explosive environment GB 4208 enclosure protection class (IP code) GB 17820 natural gas Guide for sampling of natural gas GB/T 13609 Composition analysis of natural gas - Gas chromatographic method GB/T Code for design of gas transmission pipeline GB 50251 For dated references, only the dated edition applies to this rule; references that are not dated , The latest version (including all amendments) applies to this procedure.

3 terms and units of measurement

3.1 terminology In addition to the terminology quoted in JJF1004, the following terms are used. Measurement of mass flow using the principle of heat transfer. 3.1.2 standard volume flow normalized volumetricflowrate 20 ℃, 101.325kPa under the condition of the volume flow. 3.2 Units of measurement 3.2.1 Flow units The flowmeter may use mass flow units or volumetric flow units. The flowmeter shows the cumulative mass flow unit should be kg, g, symbol. kg, g. Flowmeter shows instantaneous mass flow units can be kilograms per hour, kilograms per minute, grams per second, etc. Symbol. kg/h, kg/min, g/s. Flowmeter shows the cumulative volume of flow units should be standard cubic meters, standard elevation, standard ml, symbols. m3, L, mL. The flowmeter shows the instantaneous volume flow unit can be the standard cubic meters per hour, the standard elevation per minute, standard conditions ml Per second, etc., symbols. m3/h, L/min, mL/s. 3.2.2 Pressure units The flowmeter shows the pressure unit is Pa (Scar), kPa, MPa, symbol. Pa, kPa, MPa.

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