IEC 61239:1993 Nuclear instrumentation; portable gamma radiation meters and spectrometers used for prospecting; definitions, requirements and calibration
Applies only to instruments used in prospection. These instruments comprise the following parts: the detector itself, the display, a signal processing unit, a power supply, and an audio alarm unit. The object is to establish definitions, to state require
IEC 61239:1993 history
1993IEC 61239:1993 Nuclear instrumentation; portable gamma radiation meters and spectrometers used for prospecting; definitions, requirements and calibration