BS PD ISO/TR 22930-2:2020

The use of a continuous air monitor (CAM) is mainly motivated by the need to be alerted quicklyand in the most accurate way possible with an acceptable false alarm rate when significant activityconcentration value is exceeded, in order to take appropriate measures to reduce exposure of thoseinvolved.

The performance of this CAM does not only depend on the metrological aspect characterized by thedecision threshold, the limit of detection and the measurement uncertainties but also on its dynamiccapacity characterized by its response time as well as on the minimum detectable activity concentrationcorresponding to an acceptable false alarm rate.