KS C IEC 61779-3-2003 可燃性气体的检测·测量的电气装置.第3部分:1组装置指示甲烷含量达到空气容量的100%时的性能要求
Electrical apparatus for the detection and measurement of flammable gases- Part 3:Performance requirements for groupⅠapparatus indicating a volume fraction up to 100% methane in air