Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100% lower explosive limit.
NORMA vydána dne 15.1.1999
Designation standards: BS EN 50057:1999
Note: NEPLATNÁ
Publication date standards: 15.1.1999
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: British technical standard
Kategorie: Technické normy BS