DS DS/EN 50054
DS DSEN 50054 2000-AUG-29 Electrcal apparatus for the detecton and measurement of combustble gases - General requrements and test methods
DS DSEN 50054 2000-AUG-29 Electrcal apparatus for the detecton and measurement of combustble gases - General requrements and test methods
This European Standard specifies general requirements for construction and testing and describes the test methods that apply to portable, transportable and fixed apparatus for the detection and measurement of combustible gas or vapour concentrations with air.