GOST IEC 61779-5-2006 Electrical apparatus for the detection and measurement of flammable gases. Part 5. Performance requirements for group II apparatus indicating a volume fraction up to 100% gas
2006GOST IEC 61779-5-2006 Electrical apparatus for the detection and measurement of flammable gases. Part 5. Performance requirements for group II apparatus indicating a volume fraction up to 100% gas