Standard No.:	GB 20936.4-2008
English Name:	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
Chinese Name:	可燃性气体探测用电气设备 第4部分：显示气体体积含量至100%的II类探测器的性能要求
Chinese Classification:	K35    Explosion-proof electric apparatus
Professional Classification:	GB    National Standard
ICS Classification:	29.260.20 29.260.20    Electrical apparatus for explosive atmospheres 29.260.20
Issued by:	AQSIQ, SAC
Issued on:	2008-12-30
Implemented on:	2010-1-1
Status:	abolished
Superseded by:	GB/T 20936.1-2017 Gas detectors for explosive atmospheres—Part 1: Performance requirements of detectors for flammable gases
Superseded on:	2018-7-1
Abolished on:	2018-07-01
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	150.0
Delivery:	via email in 1~3 business day

GB 20936的本部分规定了探测空气中可燃性气体或蒸汽浓度用便携式、可移动式和固定式Ⅱ类探测器的要求。因此，这些探测器或其部件可以安装或使用在潜在爆炸性环境中，易于产生瓦斯的矿井（即Ⅰ类设备）除外。适用于本部分所包含探测器的要求和试验方法见第１部分的规定。
本部分仅限用于探测可燃性气体或蒸汽浓度与空气的体积比从０％到１００％的探测器。