I.S. EN 50055:1998被替代
Electrical Apparatus for the Detection and Measurement of Combustible Gases - Performance Requirements for Group 1 Apparatus Indicating up to 5% (v/v) Methane in air
出版：National Standards Authority of Ireland
专家解读视频
Covers performance requirements for Group 2 portable, transportable and fixed apparatus for the detection and measurement of methane concentrations in mine air up to 5% (v/v).
SS EN 50055 Ed. 2 (1998) - Identical
UNE EN 50055:1999 - Identical
BS EN 50055:1999 - Identical
DIN EN 50055 (1999-07) - Identical
NF EN 50055:1992 - Identical
