Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group I apparatus indicating up to 5 % (V/V) methane in air.
NORMA vydaná dňa 20.12.1991
Designation standards: BS EN 50055:1991
Note: NEPLATNÁ
Publication date standards: 20.12.1991
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: British technical standard
Kategória: Technické normy BS