SS EN 50055 Ed. 2 (1998)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：Standardiserings-Kommissionen I Sverige
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
I.S. EN 50055:1998 - Identical
BS EN 50055:1999 - Identical
DIN EN 50055 (1999-07) - Identical
NF EN 50055:1992 - Identical
