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GB 15322.4-2019Combustible gas detectors - Part 4: Line-type optical beam combustible gas detectors for industrial and commercial use (English PDF)

可燃气体探测器第4部分：工业及商业用途线型光束可燃气体探测器

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Issued by

State Administration for Market Regulation; Standardization Administration of China

Level / Type

National · Mandatory

Issue date

October 14, 2019

Implementation date

November 1, 2020

Scope

GB 15322.4-2019 is the English-translated version of 可燃气体探测器第4部分：工业及商业用途线型光束可燃气体探测器.

GB 15322.4-2019 is Part 4 of GB 15322 and covers line-type optical beam combustible gas detectors for industrial and commercial use, which detect hydrocarbons, ethers, esters and alcohols by spectral absorption along an open path.

It defines optical path length and integral concentration, expressed in LEL·m, then classifies the detectors and sets the requirements for their composition, appearance and performance.

The test chapter covers basic performance, alarm action, range indication deviation, long-term stability, light intensity attenuation, beam deflection, light and steam interference, voltage fluctuation, electrostatic discharge, radiated and conducted immunity, fast transients, surges, temperature, damp heat, salt spray, vibration and drop.

It also gives the factory and type inspection rules and the marking rules, with a normative annex on the steam interference test. It replaces GB 15322.4-2003, was issued on 14 October 2019 and has applied since 1 November 2020.

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Document preview — GB 15322.4-2019

National Standard of the People's Republic of China

ICS: 13.220.20
Classification: C 81
Replacing: GB 15322.4-2003

Issued by: State Administration for Market Regulation; Standardization Administration of China

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 Category
5 Requirements
5.1 General
5.2 Detector composition
5.3 Appearance requirements
5.4 Performance
6 test
6.1 Test Outline
6.2 Basic performance test
6.3 Alarm Action Performance Test
6.4 Range indication deviation test
6.5 Long-term stability test
6.6 Light intensity attenuation test
6.7 Beam Deflection Test
6.8 Light interference test
6.9 Steam interference test
6.10 Voltage fluctuation test
6.11 Electrostatic discharge immunity test
6.12 Radio Frequency Electromagnetic Field Radiation Immunity Test
6.13 Electrical fast transient burst immunity test
6.14 Surge (impact) immunity test
6.15 Conducted disturbance immunity test for RF field induction
6.16 High temperature (running) test
6.17 Low temperature (running) test
6.18 Constant damp heat (running) test
6.19 alternating heat and humidity (operation) test
6.20 Salt spray test
6.21 Vibration (sinusoidal) (durable) test
6.22 Drop Test
7 Inspection rules
7.1 Factory inspection
7.2 Type inspection
8 logo
8.1 General
8.2 Product Mark
8.3 Quality Inspection Mark
Appendix A (Normative) Steam Interference Test

Foreword

All technical content in this section is mandatory.

GB 15322 "combustible gas detector" is divided into the following parts.

--- Part 1: Point-type combustible gas detectors for industrial and commercial use;

--- Part 2: Household flammable gas detectors;

--- Part 3: Portable combustible gas detectors for industrial and commercial use;

--- Part 4: Linear and flammable gas detectors for industrial and commercial use.

This part is the fourth part of GB 15322.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This part of GB 15322 specifies the terms and definitions, classifications, requirements, and tests for linear and flammable gas detectors for industrial and commercial use, inspection, inspection rules and marking requirements.

This section applies to industrial and commercial installations using the principle of spectral absorption to detect flammability of hydrocarbons, ethers, esters, alcohols, etc. A linear beam of combustible gas detectors (hereinafter referred to as "detectors") for gases and vapors. Special properties used in industrial and commercial locations The detectors may be implemented in addition to the special requirements, which may be separately specified by the relevant standards.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 2423.17-2008 Environmental testing of electric and electronic products - Part 2: Test method test Ka: salt spray

GB 3836.1-2010 Explosive atmosphere - Part 1: General requirements for equipment

GB/T 9969 General guidelines for the use of industrial products

GB 12978 Fire Electronic Product Inspection Rules

GB 15322.1-2019 flammable gas detectors - Part 1: flammable gas detectors for industrial and commercial use

GB/T 16838 Fire electronic products environmental test methods and severity

GB/T 17626.2-2018 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test

GB/T 17626.3-2016 Electromagnetic compatibility test and measurement technology RF electromagnetic field radiation immunity test

GB/T 17626.4-2018 Electromagnetic compatibility test and measurement technology Electrical fast transient burst immunity test

GB/T 17626.5-2008 Electromagnetic compatibility test and measurement technology Surge (impact) immunity test

GB/T 17626.6-2017 Electromagnetic compatibility test and measurement technology Conducted disturbance immunity of RF field induction

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Optical path length

The propagation distance of the probe beam between the transmitting device and the receiving device (or reflecting device).

3.2 Integral concentration

The mathematical integral of the concentration of combustible gas along the length of the optical path.

Note 1: The lower explosive limit (LEL) is the lowest explosive concentration of flammable gas or vapour in the air.

Note 2: The concentration of combustible gas is in LEL, the length of optical path is in m, and the integral concentration is in LEL·m.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 19 pages — is available in the English PDF.

Referenced standards

Normative references

GB 3836.1-2010

Cited by

GB/T 42474.2-2023Safety monitoring system for vehicle transportation of explosive hazardous chemicals—Part 2: Vehicle device

Similar standards

GB 15322.1-2019|GB 15322.3-2019|GB 14003-2005|GB 3836.1|GB 16838|GB 50493

Editions of GB 15322.4

Edition	Title	Revision	Status
GB 15322.4-2019	Combustible gas detectors - Part 4: Line-type optical beam combustible gas detectors for industrial and commercial use	first revision	Current
GB 15322.4-2003	Combustible gas detectors - Part 4: Line-type optical beam combustible gas detectors for industrial and commercial use	first issue	Superseded

This page sells the current edition, GB 15322.4-2019. Earlier editions are listed for reference only.

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