NEN EN IEC 61779-3 : 2000
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ELECTRICAL APPARATUS FOR THE DETECTION AND MEASUREMENT OF FLAMMABLE GASES - PART 3: PERFORMANCE REQUIREMENTS FOR GROUP 1 APPARATUS INDICATING A VOLUME FRACTION UP TO 100% METHANE IN AIR
12-12-2007
12-01-2013
Specifies requirements for group I portable, transportable and fixed apparatus for the detection and measurement of methane concentrations in mine air.
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