NF EN 50402/A1
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
Le présent document modifie l'article 5 de la NF EN 50402.
Le présent document modifie l'article 5 de la NF EN 50402.
Le présent document s'applique aux matériels et systèmes de détection et de mesure utilisés pour la détection et le mesurage de gaz ou de vapeurs inflammables ou toxiques, ou de l'oxygène. Il couvre les matériels destinés à mesurer en toute fiabilité la concentration de gaz et à fournir un signal de sortie (signal d'alarme et/ou de mesure) dont l'objectif est d'avertir d'un danger potentiel.
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