专家解读视频
Describes performance requirements for Group II (as defined in European Standard EN 50054) portable, transportable and fixed apparatus for detection and measurement of combustible gas or vapour concentrations with air. The apparatus, or parts thereof, may be used in potentially explosive atmospheres, other than mines susceptible to firedamp (ie. Group I). General requirements and test methods applicable to apparatus covered by this European Standard are given in European Standard EN 50054. Limited to apparatus designed for detection and measurement of volume ratios of combustible gas or vapour in air from 0% (V/V) to 100% (V/V).
INDICE DE CLASSEMENT: C23558
SS EN 50058 Ed. 2 (1998) - Identical
UNE EN 50058:1999 - Identical
I.S. EN 50058:1998 - Identical
BS EN 50058:1999 - Identical
DIN EN 50058 (1999-07) - Identical
