Entsys Technologies - Non-Destructive Testing and Nuclear Medicine

 
 
 
 
 
 

 

DoseGUARD™

 




Application / Description
DoseGUARD™ personal alarm dosimeters are precision instruments for ensuring that radiation doses are kept as low as reasonably achievable.
The dose rate or cumulative dose is shown on an LCD display. An audible alarm sounds if a preset dose or dose rate is exceeded. The instrument can also be set to give an audible warning of the instantaneous dose rate.
Energy compensation circuits ensure high accuracy. Key parameters are stored in EEPROM and are retained even if the battery is removed.
The dosimeter casing is robust and splash-proof, and is constructed from smooth high impact plastic for easy decontamination. The instrument has been designed to protect the readings against accidental erasure due to mechanical shock or an RF field. It is battery operated, and requires one standard AAA size alkaline cell.

New features:
- Enhanced RF immunity
- Ruggedised clip fixing
- Easier to decontaminate
- Louder volume

Technical data:
Radiation type Beta, gamma and X-ray
Photon energy range Hp(10) 17keV to 1.5MeV better than +/- 20%
Hp(10) 1.5MeV to 6MeV better than +/- 30%
Hp(0.07) 20keV to 6MeV better than +/- 30%
Dose rate range up to 4Sv/h
Dose range up to 16Sv
Accuracy Hp(10) Cs-137 +/-10%
Hp(0.07) Sr-90 +/-20%
Display Dose or dose rate
Whole body (Hp(10)) or surface (Hp(0.07))
Alarms 2 thresholds on each of dose/ dose rate (Hp(10))
Chirp alarm Can be set from 0.01mSv/chirp to 100mSv/chirp
Alarm pitch / volume High or low tone
7 volume levels
Continuous or intermittent sound
Maximum volume 98dBA at 20cm
Power supply Standard AA lithium battery (typically 5
months continuous use) or standard AA
alkaline battery (typically 55 days continuous use)
Dimensions 85mm x 63mm x 19mm
Weight 93g including battery
Case: High impact ABS / polycarbonate blend
Clip High impact plastic, easily renewed, Lanyard available
Operating temperature range -10 to +40?C
Storage temperature range -25 to +70?C
Humidity range: 20% to 90% relative humidity, non-condensing