prEN 12411-4

Workplace atmospheres - Electrical apparatus used for the direct detection and concentration measurement of toxic gases and vapours - Part 4: Guide for selection, installation, use and maintenance prEN 12411-4

Scope

This part of European Standard EN 12411 provides some background information and gives guidance on the selection, installation, use and maintenance of electrical apparatus used for the direct detection and concentration measurement of toxic gases and vapours in workplace air. It is aimed at apparatus whose primary purpose is to indicate the presence and concentration of a toxic gas or vapour with a view to providing a rapid indication or warning of the presence of a toxic hazard.