scope:

This Recommendation applies to portable assemblies intended to measure exposure rate due to X or gamma radiation of energy between 50 KeV and 3 MeV for the purposes of radiation protection, and which comprise at least: - a detector sub-assembly, (e.g., ionization chamber, G.M. counter tube, scintillation detector, etc.), - a measuring sub-assembly, which may be connected together either rigidly or means of a flexible cable, or incorporated into a single assembly. The Recommendation is also applicable to portable exposurerate measuring assemblies designed for special applications (e.g. very high exposure rates). However, some of the specifications may need to be amended or supplemented according to the particular characteristics applicable to such assemblies. The Recommendation is not applicable to the operating characteristics of the functional units of sub-assemblies for the display of information (e.g. indicating meters, recorders, alarms).