BS 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：British Standards Institution
专家解读视频
Performance requirements for portable and fixed apparatus for the detection and measurement of methane concentrations in mine air.
© British Standards Institution 2013
NF EN 50055:1992 - Identical
UNE EN 50055:1999 - Identical
SS EN 50055 Ed. 2 (1998) - Identical
DIN EN 50055 (1999-07) - Identical
I.S. EN 50055:1998 - Identical
