VF HF-50 - Fig. 1 Hand-Foot Contamination Monitor

General description
VF1807090083 EN revision 25
4. General description
4.1. Purpose of the instrument
The HF series Hand-Foot Contamination Monitors are intended for the measurement of surface contamination
by alpha, beta and gamma emitting radionuclides on hands, feet, and clothing (when equipped with optional
frisking probe).
The monitor can be used in nuclear power plants, radio-chemical plants, research institutes with reactors, PET
centres, etc. For different workplaces an appropriate one or two channel model can be utilised, optimized for
the measurement of alpha; alpha + beta; alpha + beta + gamma; alpha / beta and alpha / beta + gamma
radiation.
4.2. Description of instrument
Fig. 1 Hand-Foot Contamination Monitor
Hand-foot contamination monitors are produced in two design variants differing in the orientation of hand
detectors:
 A variant with a vertical layout of the hand detectors equipped with a special biaxial pressure
mechanism providing optimal measurement geometry for alpha radiation (in Fig. 1 on the left).
 A variant with a horizontal layout of the hand detectors and an uniaxial pressure mechanism using
gravity for optimal geometry measurement (in Fig. 1 on the right).