ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF COMBUSTIBLE GASES. PERFORMANCE REQUIREMENTS FOR GROUP II APPARATUS INDICATING UP TO 100% LOWER EXPLOSIVE LIMIT.
STANDARD published on 18.11.1999
Designation standards: UNE-EN 50057:1999
Note: WITHDRAWN
Publication date standards: 18.11.1999
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: Spanish technical standard
Category: Technical standards UNE