Electrical apparatus for the detection and measurement of toxic and combustible gases in car parks and tunnels - Part 1: General performance requirements and test methods for the detection and measurement of carbon monoxide and nitrogen oxides
This European Standard applies to apparatus for the detection and/or the measurement of carbon monoxide (CO), nitrogen monoxide (NO) and nitrogen dioxide (NO2) intended to control a ventilation system and/or to give an indication, alarm or any other signal to warn of a toxic hazard. These three gases are generically called “target gases” for the purpose of this European Standard.National and local regulations might not require detection of NO or NO2 and might require detection of other gases or vapours. This European Standard includes requirements for remote gas sensors (RGS) to be used in car parks and tunnels and requirements for the control unit (CU) to