Electrical apparatus for the detection and measurement of flammable gases—Part 2:Performance requirements for group I apparatus indicating a volume fraction up to 5 % methane in air
NORMA vydána dne 30.9.2009
Designation standards: GB 20936.2-2009
Note: NEPLATNÁ
Publication date standards: 30.9.2009
Country: Chinese technical standard
Kategorie: Technické normy GB