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).
INDICE DE CLASSEMENT: C23555
I.S. EN 50055:1998 - Identical
SS EN 50055 Ed. 2 (1998) - Identical
UNE EN 50055:1999 - Identical
DIN EN 50055 (1999-07) - Identical
BS EN 50055:1999 - Identical
