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JJG 686-2015 English PDF

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JJG 686-2015: Verification Regulation of Hot Water Meters
Status: Valid

JJG 686: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 686-2015English489 Add to Cart 4 days [Need to translate] Verification Regulation of Hot Water Meters Valid JJG 686-2015
JJG 686-2006English959 Add to Cart 6 days [Need to translate] Verification Regulation of Hot Water Meter Obsolete JJG 686-2006
JJG 686-1990English559 Add to Cart 4 days [Need to translate] Verification Regulation of Hot Meter Obsolete JJG 686-1990

PDF similar to JJG 686-2015


Standard similar to JJG 686-2015

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Basic data

Standard ID JJG 686-2015 (JJG686-2015)
Description (Translated English) Verification Regulation of Hot Water Meters
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A53
Classification of International Standard 17.120
Word Count Estimation 21,295
Date of Issue 2015-04-10
Date of Implementation 2015-10-10
Older Standard (superseded by this standard) JJG 686-2006 (Partial)
Quoted Standard JJG 162-2009; JJG 164-2000; GB/T 778.1-2007; GB/T 778.2-2007; GB/T 778.3-2007; OIML R49-1-2013(E); OIML R49-2-2013(E)
Regulation (derived from) State Quality Inspection Administration Announcement 2015 No. 47
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine
Summary This Standard applies to the nominal diameter of not more than 300 mm of water meter initial verification, subsequent verification and the use of checks. The procedure referred to measure the water table flows through closed conduits hot water, temperature class T70 ~ T130 of water, including mechanical water table, water table is equipped with a mechanical electronic device, work based on the principle of electromagnetic or electronic The water table.

JJG 686-2015: Verification Regulation of Hot Water Meters

---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 Hot Water Meters State verification procedures People's Republic of China Hot water HotWaterMeters Issued on. 2015-04-10 2015-10-10 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Hot water test procedures Body part instead of JJG 686-2006 Focal point. the National Technical Committee on Metering flow capacity Main drafting unit. Zhejiang Institute of Metrology Henan Institute of Metrology Participated in the drafting unit. Ningbo Donghai Instrument Co. waterway Jiangxi three-meter Co., Ltd. Shandong Sanlong Instrument Co., Ltd. Inner Mongolia Institute of Metrology Zhejiang Di yuan Instrument Co., Ltd. This procedure flow capacity commissioned the National Technical Committee responsible for the interpretation of measurement The main drafters of this procedure. Zhan Zhijie (Zhejiang Institute of Metrology) Cuiyao Hua (Henan Institute of Metrology) Lu Jiaying (Zhejiang Institute of Metrology) Drafters participate. Lin Zhiliang (Ningbo East Instrument Co., Ltd. waterway) Song Choi hua (Jiangxi three-meter Co., Ltd.) DONG light silver (Shandong Sanlong Instrument Co., Ltd.) Yang Huancheng (Inner Mongolia Institute of Metrology) Sun Xiangdong (Zhejiang Di yuan Instrument Co., Ltd.)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 The term (1) 3.2 units of measurement (2) 4 Overview (2) 4.1 principles and structures (2) 4.2 Classification (3) 5 metering performance requirements (3) 5.1 Q1, Q2, Q3, Q4, the value of (3) 5.2 accuracy class and the maximum permissible error (4) 6 General Requirements (4) 6.1 Materials and Structures (4) 6.2 adjustments and amendments (5) 6.3 Installation conditions (5) 6.4 Rated operating conditions (6) 6.5 tags and nameplates (6) 6.6 indicating device (7) 6.7 protective device (7) 6.8 sealing (7) 6.9 with electronic means water table (8) 6.10 auxiliary means (8) 7 control of measuring instruments (8) 7.1 Verification condition (8) 7.2 Verification Project (9) 7.3 Verification Methods (10) 7.4 test results processing (13) 7.5 test cycle (13) Appendix A reference test recording format (Quality Act) (14) Appendix B calibration certificate and test results in the notice page format (15)

Introduction

This procedure is based on GB/T 778.1 ~ 3-2007 "closed conduits Measurement of water flow cold potable water And hot water ", the International Organization of Legal Metrology (OIML) International Recommendation OIMLR49-1.2013 (E)" measure The amount of potable water meter cold and hot water - Part 1. metrological and technical requirements ", OIMLR49-2.2013 (E) "Measurement potable cold water and hot water meters - Part 2. Test methods" as the basis for the preparation, combined with our hot water Table manufacturing industry status and use of JJG 686-2006 body part subject to revisions. The main technical indicators and national Home standard equivalent. According to management needs, the original JJG 686-2006 "water table" type and split into test procedures Assessment outline-style two specifications. This procedure compared with JJG 686-2006 text, in addition to editorial changes, the major technical changes are as follows. --- In order applies to the scope of the re-provision. In addition to mechanical water table, the increase based on electromagnetic or electronic Working principle water table; water table by the maximum operating temperature of 180 ℃ to 130 ℃, and is represented by the temperature class; Flow characteristics --- water table by Q1, Q2, Q3, Q4 OK, replace the original characteristics of the traffic sign; --- Water table by Q3 (in m3/h units) and ratios flag Q3/Q1, Q2/Q1, and the provisions of the Department of The number of columns, an alternative expression of the original code and measurement meter level A, B, C, D of; --- Verification Project Central Plains "visual inspection" with "the appearance and function of inspection"; --- Original test cycle "is generally not more than two years," the provisions of the State and to administrative departments for measurement compulsory verification The same management of measuring instruments; The previous versions of this Recommendation published case. --- JJG 686-1990 water table; --- JJG 686-2006 water table. Hot water test procedures

1 Scope

The order applies to the nominal diameter of not more than 300mm of hot water (hereinafter referred to as the water table) of the first seizure Set, and use the subsequent verification check. The procedure referred to in hot water meter to measure water flow through closed conduits, temperature class T70 ~ T130 water meter, Including mechanical water table, water table is equipped with a mechanical electronic device, heat working principle based on electromagnetic or electronic Meter. 2. References This procedure references the following documents. JJG 162-2009 cold water JJG 164-2000 liquid flow standard device Measurement of water flow in closed conduits 778.1-2007 GB/T cold potable water and hot water first Part 1. Specification Measurement of water flow in closed conduits 778.2-2007 GB/T cold potable water and hot water first Part 2. Installation requirements Measurement of water flow in closed conduits 778.3-2007 GB/T cold potable water and hot water first Part 3. Test methods and equipment OIMLR49-1.2013 (E) measure potable cold water and hot water meters - Part 1. Measurement and Technology Surgery requires "Watermetersintendedforthemeteringofcoldpotablewaterandhotwater- Part 1. Metrologicalandtechnicalrequirements " OIMLR49-2.2013 (E) measure potable cold water and hot water meters - Part 2. Test methods "Watermetersintendedforthemeteringofcoldpotablewaterandhotwater-Part 2. Testmethods " 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 terminology and units of measurement

3.1 Terms In addition to the terms set forth references JJG 162 outside, this regulation also cited the following terms. 3.1.1 Traffic Time Act flowrate-timemethod Flowing through the meter in the certification process by measuring the amount of water flow and results of time determined by the provisions of Repeated measurements once or more times to achieve within the flow of time. But to avoid the beginning of the test and the end of the non-constant Constant flow area instantaneous flow measurement.

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