ELECTRONIC PERSONAL DOSEMETER HANDBOOK
EPD/HB/40521/000
TECHNICAL DESCRIPTION
ISSUE 5
Thermo
Page 41
SECTION 4
TECHNICAL DESCRIPTION
This section provides a technical description of the EPD and contains a summary
of the EPD’s radiological features together with a summary of the EPD’s electrical,
mechanical and environmental characteristics.
4.1 General
The EPD is of rugged construction and is suitable for most conditions that can
reasonably be expected in industrial environments. The radiological features of
the EPD are summarised below (a full radiological specification is given in
Appendix A to this handbook):
♦
Sensitivity to X and γ radiation, β particles
♦
Multiple PIN diode detectors
♦
4 channel parametric algorithm processing
♦ Direct readout of personal dose equivalents Hp(10)
(penetrating/deep/whole body) and Hp(0.07) (superficial/shallow/skin)
♦ Neutron response <2%
♦
Meets relevant parts of BS-EN-ISO61526 for dose equivalent monitors
(unless otherwise specified)
♦
Dose display and storage 0µSv to >16Sv (0.0 mrem to > 1600 rem) auto
ranging
♦ Resolution for dose display 1µSv (0.1mrem) at levels up to 10mSv (1 rem)
♦
Resolution for dose storage 1/64µSv
♦
Dose rate display 0µSv/h to >4Sv/h auto ranging, resolution 2 most
significant digits or 1µSv/h at lower levels (10
µ
Sv/h for Hp(0.07)/h)
♦
Dose rate peak store 0µSv/h to >4Sv/h resolution 1µSv/h
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