DIN EN 50055 : 1999被替代
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
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
Describes performance requirements for Group I (as defined in European Standard EN 50054) portable, transportable and fixed apparatus for detection and measurement of methane concentrations in mine air. The apparatus, or parts thereof, are designed for use in mines susceptible to firedamp and comply with requirements and test methods specified in European Standard EN 50054. Limited to apparatus intended for detection and measurement of methane volume ratios in air from 0% (V/V) up to but not exceeding 5% (V/V).
UNE EN 50055 : 1999 - Identical
BS EN 50055 : 1999 - Identical
EN 50055 : 1998 - Identical
VDE 0400-2 : 2015 - Corresponds
NF EN 50055 : 92 AMD 1 98 - Identical
NEN EN 50055 : 1998 - Identical
I.S. EN 50055:1998 - Identical
NBN EN 50055 : 1998 - Identical
NEN EN 50055 : 1998 - Identical
BS EN 50055 : 1999 - Identical
NBN EN 50055 : 1998 - Identical
NF EN 50055 : 92 AMD 1 98 - Identical
UNE EN 50055 : 1999 - Identical
I.S. EN 50055:1998 - Identical
