ELECTRONIC PERSONAL DOSEMETER HANDBOOK
EPD/HB/40521/000
APPENDIX C
ISSUE 5
Thermo
Page 97
APPENDIX C
SUMMARY OF GENERAL PHYSICAL &
FUNCTIONAL CHARACTERISTICS
Feature Characteristic
Battery
Type
1.5V Alkaline AA or 3.6V Lithium Thionyl Chloride
(LTC) AA batteries. ( Observe Manufacturers
warnings. )
Dimensions Diameter : 13.9 to 14.6 mm, Length: 49.0 to 51.0 mm.
Typical Life 5 months (LTC), 55 days (Alkaline), continuous
operation, depending upon usage ( dose-rate, alarms
etc.).
Test Battery tested nominally Every 15 minutes. Warning
raised with 10 hours + remaining.
On/Off control. Via button and communications interface, when
enabled.
Access ‘Bayonet’ style rotating battery cap with coin and
security options. Environmental and EMC seal.
Sounder
Output
(Alarms)
98 dB(A) to 101 dB(A), at 20cm (4kHz loud).
80 dB(A) to 90 dB(A), at 20cm (4kHz quiet).
Configuration
(per alarm)
High/low tone, loud/quiet/off volume control in seven
combinations of continuous or fast/slow intermittent.
User mute enable/disable control.
Dose Chirp ‘Real time’ chirp function with programmable
sensitivity ( 0.01
µSv/chirp to 100 µSv/chirp ).
From firmware version 11 the chirp uses the loud
alarm setting. Earlier versions use the quiet setting.
Mechanical
Weight 95 gm including LTC battery and clip. 88 gm with
lanyard plate only.
Dimensions 86 x 63 x 18.5 mm ( 28.5 mm with clip ).
Construction Plastic case (Polycarbonate / ABS blend). RFI
screened case and LCD Window, contributing to
excellent RFI immunity.
Case colours Agate grey, Melon Yellow, Nato Green. Other case
colours are available, consult manufacturer.
Clip High grip, removable clip with ‘break-away’
attachments for lanyard strap.
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