KS C IEC 61779-3:2003 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
2003KS C IEC 61779-3:2003 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