KS C IEC 61779-2:2003 Electrical apparatus for the detection and measurement of flammable gases-Part 2 : Performance requirements for group Iapparatus indicating a volume fraction up to 5% methane in air
2003KS C IEC 61779-2:2003 Electrical apparatus for the detection and measurement of flammable gases-Part 2 : Performance requirements for group Iapparatus indicating a volume fraction up to 5% methane in air