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JJG 695-2019 English PDF

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JJG 695-2019: Sulfur Hydrogen Gas Detectors
Status: Valid

JJG 695: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JJG 695-2019English329 Add to Cart 3 days [Need to translate] Sulfur Hydrogen Gas Detectors Valid JJG 695-2019
JJG 695-2003English170 Add to Cart 0--9 seconds. Auto-delivery Verification Regulation of Sulfur Hydrogen Gas Detectors Obsolete JJG 695-2003
JJG 695-1990English519 Add to Cart 4 days [Need to translate] Regulation of Verification for Hydrogen Sulfide Gas Analyzer Obsolete JJG 695-1990

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Basic data

Standard ID JJG 695-2019 (JJG695-2019)
Description (Translated English) Sulfur Hydrogen Gas Detectors
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A61
Classification of International Standard 17.020
Word Count Estimation 14,131
Date of Issue 2019
Date of Implementation 2020-03-27
Issuing agency(ies) State Administration for Market Regulation

JJG 695-2019: Sulfur Hydrogen Gas Detectors

---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.
Sulfur Hydrogen Gas Detectors National Measurement Verification Regulations of the People's Republic of China Hydrogen sulfide gas detector 2019-09-27 release 2020-03-27 Implementation Issued by the State Administration of Market Supervision and Administration Hydrogen sulfide gas detector Verification regulations Replace JJG 695-2003 Focal point: National Technical Committee for Environmental Chemometrics Main drafting unit: Shanghai Institute of Metrology and Testing Technology China Testing Technology Research Institute Participated in the drafting unit: Gansu Metrology Research Institute Shanghai Ladi Technology Co:, Ltd: This regulation is entrusted to the National Environmental Chemometrics Technical Committee for interpretation The main drafters of this regulation: Chen Lan (Shanghai Institute of Metrology and Testing Technology) Qing Liu (China Institute of Testing Technology) Cai Jianhua (Shanghai Institute of Metrology and Testing Technology) Participating drafters: Shi Jianwei (Shanghai Institute of Metrology and Testing Technology) Wanli (China Institute of Testing Technology) Shi Liyu (Gansu Metrology Research Institute) Qi Jiaju (Shanghai Laidi Technology Co:, Ltd:)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 Overview (1) 3 Measurement performance requirements (1) 4 General technical requirements (1) 4:1 Appearance and structure (1) 4:2 Marks and logos (1) 4:3 Power-on inspection (2) 4:4 Alarm function (2) 4:5 Insulation resistance (2) 5 Control of measuring instruments (2) 5:1 Verification conditions (2) 5:2 Verification items (2) 5:3 Verification method (3) 5:4 Processing of verification results (5) 5:5 Verification period (5) Appendix A Verification Record Format (6) Appendix B Format of the inner pages of the certificate of verification/certification result (8)

Introduction

This regulation is a revision of JJG 695-2003: The revision of this regulation refers to GB 12358-2006 "Workplace The general technical requirements of the environmental gas detection and alarm instrument of the Institute ", GB/T 13971-2013" Technical Article of UV Gas Analyzer "", GB/T 25923-2010 "Online Gas Analyzer Technical Conditions" and other technical regulations: With JJG 695- Compared with:2003, the main technical changes except for editorial changes are as follows: --- Modified the scope of application (see 1): --- Modified the measurement performance requirements, respectively listed the measurement performance requirements of the analyzer and the detection alarm (see 3): --- Delete the alarm setting error verification item, and add the alarm function verification item to the instrument with alarm function (See 4:4): --- Modify the appearance item in the original regulations to "appearance and structure", "signs and logo", "power-on inspection", etc: Three items (see 4:1, 4:2, 4:3): --- Delete the insulation strength verification items, and delete the insulation strength tester and insulation strength verification method: --- The relative expansion uncertainty and inclusion factor of gas reference materials are determined by the original relative expansion uncertainty If it is greater than 2%, k = 3 is modified to a relative expansion uncertainty of not greater than 2%, k = 2: When using a gas dilution device, The relative expansion uncertainty of the standard gas after dilution shall meet the above requirements (see 5:1:2:1): --- Changed the format of the verification record, the verification certificate and the internal page format of the verification result notification (see Appendix A, Appendix B): The previous releases of this regulation are: --- JJG 695-2003; --- JJG 695-1990: Verification Regulation of Hydrogen Sulfide Gas Detector

1 Scope

This regulation is applicable to the first verification, subsequent verification and in-use inspection of hydrogen sulfide gas detector: Hydrogen sulfide gas The detector includes a hydrogen sulfide gas detection alarm and a hydrogen sulfide gas analyzer:

2 Overview

Hydrogen sulfide gas detector (hereinafter referred to as instrument) is mainly used to detect sulfide in the workplace environment and production process The concentration of hydrogen gas: For the instrument with alarm function, when the displayed value is greater than the alarm setting value, there should be sound, light or vibration Call the police: The instrument is mainly composed of gas circuit unit, detection unit, signal processing unit, alarm unit and display unit: The detection principle is mainly electrochemical method, spectroscopy, etc: According to the sampling method, it is divided into diffusion type, positive pressure conveying type and pump suction type: According to the usage mode, it is divided into portable and fixed: It can be divided into non-continuous measurement and continuity measurement according to working mode:

3 Measurement performance requirements

See Table 1 for metering performance requirements: Table 1 Measurement performance requirements Project hydrogen sulfide gas analyzer hydrogen sulfide gas detection alarm Indication error ± 10% ± 2μmol/mol or ± 10% (Just one of them) Response time ≤90s ≤60s Repeatability ≤1:5% ≤2% drift Zero drift ± 2% FS Range drift ± 3% FS Note: FS indicates the full scale of the instrument:

4 General technical requirements

4:1 Appearance and structure 4:1:1 The instrument should not have any appearance damage that would affect its normal operation: The surface of the newly manufactured instrument should be smooth, flat and painted The coating is uniform without peeling and rusting: 4:1:2 The adjustment parts shall be able to operate normally, and the fasteners shall be free from looseness: 4:2 Marks and logos The instrument name, model, number, name of the manufacturer, date of manufacture, measurement range, maximum allowable error, etc:

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