DIN EN 50402 VDE 0400-70:2018-01

Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen

Requirements on the functional safety of gas detection systems;

DIN EN 50402 VDE 0400-70:2009-01

Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen

Requirements on the functional safety of fixed gas detection systems;

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DIN EN 50402 VDE 0400-70:2006-03

Electrical apparatus for the detection and measurement of combustible or toxic gases or vapours or of oxygen

Requirements on the functional safety of fixed gas detection systems;