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OVE EN 50402:2018
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 (english version)
This European Standard is applicable to equipment and systems for the detection and measurement of combustible or toxic gases or vapors or oxygen. It includes equipment designed to reliably measure a gas concentration and provide an output signal (alarm and / or measurement signal) to warn of a potential hazard.
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Austrian Standards Institute [on]