The EHT Supply is adjustable between 350Volts and 1300Volts making this detector suitable for use with a variety of suitable probes, but also allowing it to be tailored for sensitivity to particular isotopes of known energy levels.
These devices were common in Medical Nuclear Physics labs before the advent of MCA's and semiconductor detectors.
The dual phosphor probe contains a photomultiplier which amplifies the weak phosphor emissions and produces electrical pulses which the unit then detects.
The unit operates on a 9 Volt (PP9) battery which provides approximately 60 hours of run time.
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PCM3 Instruction & Service Manual
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