Electrical apparatus for the detection and measurement of combustible gases. Performance requirements for Group II apparatus indicating up to 100 % lower explosive limit.
NORM herausgegeben am 20.12.1991
Designation standards: BS EN 50057:1991
Note: UNGÜLTIG
Publication date standards: 20.12.1991
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: British technical standard
Kategorie: Technische Normen BS