EPD/HB/40521/
000
ELECTRONIC PERSONAL DOSEMETER HANDBOOK
APPENDIX C
ISSUE 5
Page 98
Thermo
Feature Characteristic
Drop 1.5m, each face to concrete.
Button Sealed and recessed to prevent inadvertent
operation. Tactile, with button beep facility (sounder).
Teledosimetry May be attached to Thermo teledosimetry adapter
using clip attachment features.
Environmental
Temperature -10°C to +40°C ( operating ), -25°C to 70°C
(storage ).
Humidity 20% to 90% RH non-condensing
Sealing IP55
Vibration 2g, 15 min, 10 - 33 Hz
Communicat-
ions & Internal
Data
Type IR communication to front of unit, range up to 1m.
May use standard IrDA adapters ( physical level 1 )
with Thermo supplied DLL and application s/w as
required ( EasyEPD2, Access Control s/w etc. ).
Also provides IR communication to rear or unit for
teledosimetry applications ( two way data transfer ).
Memory Large non-volatile store for dosemeter control
parameters, dose data storage, dose profile, system
scratchpad etc. 10-year data retention.
Issue / Return Issue and return times of circa 1 second ( EPD
communications time only ).
Incident
assessment
Internal event & alarm historical log. 23 entries (for
time recording of alarms etc.). Peak dose-rate
recording.
Dose Profile Interval programmable from two seconds to 35 hours.
Stores Hp(10) and Hp(0.07) to a resolution of 1
µ
Sv.
Up to 579 records for transitions up to 127
µSv or
less but extending greatly in zero fields.
Alarms &
Other
Functions
Alarms 2 x Hp(10) dose and dose rate alarms. 1 x Hp(0.07)
dose and dose rate alarms. Count down alarm (stop-
watch). Return for read alarm. Fault alarms. Over-
range alarms. Dose-rate and over-range alarm
status is latched for subsequent system analysis.
Special Total
Dose Store
12 entries (for recording end of month dose etc)
Count-down
Timer
Configurable up to 1 hour 39 minutes and 59 seconds
(1 second resolution).
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