GB/T 20936.3-2009
AbolishedElectrical 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
可燃性气体探测用电气设备 第3部分：显示空气中甲烷体积含量至100%的I类探测器的性能要求
Application Summary AI generated
This standard specifies performance requirements for Group I electrical apparatus designed to detect and measure methane concentrations from 0% to 100% by volume in air. It is applied in underground coal mines and other mining environments where flammable gases pose explosion risks, ensuring the reliability and safety of gas detection equipment used for monitoring methane levels.
Related Standards
GB/T 19518.2-2004
Electrical apparatus for explosive gas atmospheres--Electrical resistance trace heating--Part 2:Application guide for design，installation and maintenance
GB/Z 3836.37-2025
Explosive atmospheres—Part 37：Equipment protection by 2-wire intrinsically safe ethernet concept （2-WISE）
GB/T 18616-2002
Corrugated flexible metallic hose assmeblies for the protection of electrical cables in explosive atomspheres
GB/T 9089.1-1988
Electrical installations for outdoor sites under heavy conditions--Terms and definitions
GB/T 12173-2008
Mining electrical apparatus for non hazardous area
GB/T 5590-2008
Low voltage explosion protection electromagnetic starter for mining
GB/T 3836.12-2008
Explosive atmospheres - Part 12: Classification of gases or vapours with air according to their maximum experimental safe gaps and minimum igniting current
GB/T 3836.11-2008
Explosive atmospheres - Part 11: Equipment protection by flameproof enclosures "d" - Method of test for ascertainment of maximum experimental safe gap
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.