
Electrical Apparatus for the Detection and Measurement of Combustible Gases - Performance Requirements for Group 2 Apparatus Indicating up to 100% Lower Explosive Limit
出版:National Standards Authority of Ireland

专家解读视频
Provides performance requirements for Group 1 portable, transportable and fixed apparatus for the detection and measurement of methane concentrations in mine air up to 100% (v/v).
UNE EN 50057:1999 - Identical
SS EN 50057 Ed. 2 (1998) - Identical
BS EN 50057:1999 - Identical
DIN EN 50057 (1999-07) - Identical
NF EN 50057:1992 - Identical