GB/T 20936.1-2017 Replaced National standards

GB/T 20936.1-2017 Gas detectors for explosive atmospheres—Part 1:Performance requirements of detectors for flammable gases

Publish Date: 2017-12-29 Implement Date: 2018-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 20936.1-2017

Standard Type: National standards

Standard Status: Replaced

is_force_gb: no

CCS Name: Explosion-proof electrical appliances

ICS Name: Electric equipment for use in explosive environments

Publish Date: 2017-12-29

Implement Date: 2018-07-01

Pages: 36 pages

Scope

This part of GB/T 20936 specifies the general requirements and test methods for the structure, testing, and performance of portable, mobile, and fixed flammable gas or vapor detectors used entirely or partially in explosive environments (including gas mines and potentially explosive environments). When the manufacturer declares that the detector structure has special features or performance exceeding the requirements of this part, this part also applies, but such cases should be verified. If necessary, the test procedures should be expanded to verify the manufacturer's claimed performance. When verifying higher requirements for a performance indicator, other performance indicators do not need to comply with the requirements of this part. However, the reduced performance indicators claimed by the manufacturer (confirmed by the manufacturer's installation manual) should be verified. (For example, a temperature range of 0℃ to 60℃, with the manufacturer claiming an accuracy of ±10% for the temperature range of 0℃ to 40℃ and ±15% for the temperature range of 40℃ to 60℃). Additional tests should be agreed upon between the manufacturer and the inspection agency and described in the test report. This part applies to flammable gas detectors with signal indication, alarm, or other output functions, which are used to warn of explosion hazards and automatically or manually trigger interlocking protection devices. This part also applies to suction-type detectors with built-in sampling systems for safety applications in commercial and industrial non-residential settings. This part does not apply to external sampling systems, laboratory equipment, scientific research equipment, or equipment solely used for process control, nor to open-path (light path) site monitors. For detectors that detect multiple gases, this part only applies to their detection of flammable gases or vapors. This part adds and supplements the general requirements of GB 3836.1. Note

Development Information

Word Count: 70 Thousand words Pages: 36 pages

Same series standard

GB/T 20936.2-2017 Gas detectors for explosive atmospheres—Part 2:Selection，installation,use and maintenance of detectors for flammable gases and oxygen GB/T 20936.3-2017 Gas detectors for explosive atmospheres—Part 3:Guidance on functional safety of fixed gas detection systems GB/T 20936.4-2017 Gas detectors for explosive atmospheres—Part 4:Performance requirements of open path detectors for flammable gases

Replace the following standards

GB 20936.1-2007 Electrical apparatus for the detection and measurement of flammable gases—Part 1:General requirement and test methods GB 20936.2-2009 Electrical apparatus for the detection and measurement of flammable gases—Part 2:Performance requirements for group I apparatus indicating a volume fraction up to 5 % methane in air GB/T 20936.3-2009 Electrical apparatus for the detection and measurement of flammable gases—Part 3:Performance requirements for group Ⅰ apparatus indicating a volume fraction up to 100% methane in air GB 20936.4-2008 Electrical apparatus for the detection and measurement of flammable gases—Part 4:Performance requirements for group Ⅱ apparatus indicating a volume fraction up to 100% gas

Superseded by the following standards

GB/T 20936.1-2022 Gas detectors for explosive atmospheres—Part 1:Performance requirements of detectors for flammable gases

Referenced Standards

Adopt standards

IEC 60079-29-1:2007

Related Standards

GB 5590-1985 Replaced

GB 5590-1985 Mining type flameproof electric magnetic starters

Publish Date: 1985-11-20

GB 3836.9-1990 Replaced

GB 3836.9-1990 Electrical apparatus for explosive atmospheres Encapsulated electrical apparatus "m"

Publish Date: 1990-08-27

GB 3836.11-1991 Replaced

GB 3836.11-1991 Electrical apparatus for explosive atmospheres-Method of test for ascertainment of maximum experimental safe gap

Publish Date: 1991-05-27

GB 3836.12-1991 Replaced

GB 3836.12-1991 Electrical apparatus for explosive atmospheres—Classification of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting currents

Publish Date: 1991-05-27

GB 3836.13-1997 Replaced

GB 3836.13-1997 Electrical apparatus for explosive gas atmospheres—Part 13:Repair and overhaul for apparatus used in explosive gas atmospheres

Publish Date: 1997-12-30

MT 703-1997 Replaced

MT 703-1997 Technical condition of electro-chemical type carbon monoxide instrumentation for coal mine

Publish Date: 1997-12-30