GB/T 20936.3-2009 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 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
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