Electronic Personal Dosimeter EPD-27
DoseG and DoseGX represent a new EPD-27 family of electronic personal dosimeters from ECOTEST trademark.
The devices are intended for use as part of an automated system of individual dosimetric control and for autonomous use. EPD-27 dosimeters are available in two modifications – DoseG and DoseGX.
Measurement of individual dose equivalent (DE) of gamma and X-ray radiation
Measurement of individual dose equivalent rate (DER) of gamma and X-ray radiation
Monitoring of time spent in the control zone
Maintaining an automated database of dose load on personnel as part of the software and hardware complex (unified) automated system of individual dosimetric control of personnel
Scintillator-based detectors with a silicon photomultiplier
Ability to store data in non-volatile memory
Sound, light, and vibration alarms of threshold levels exceeding
Infrared port for transferring the dose accumulation history and event history from the dosimeter to the personal computer, as well as for setting up the dosimeter
Glass-filled plastic shock-resistant housing of high ingress protection rating IP67
Backlight of the digital display
Resistant to 60 repetitive shocks, each corresponding to a drop of 10 cm on a hard steel surface, and resistant to 6 drops (one drop on each side) from a height of 1 m on a hard surface
| Measurement and display range of photon ionizing radiation DER | 1∙10-6 … 10 Sv/h |
Main relative permissible error limit of EPD-27 DoseG dosimeter when measuring gamma radiation DER at 137Cs calibration with a confidence probability of 0.95
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Main relative permissible error limit of EPD-27 DoseGX dosimeter when measuring gamma radiation DER at 137Cs calibration with a confidence probability of 0.95
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| Measurement and display range of X-ray radiation DER by EPD-27 DoseGX dosimeter | 1∙10-6 … 1∙10–1 Sv/h |
| Measurement and display range of photon ionizing radiation DE | 1∙10-7 … 10 Sv |
| Main relative permissible error limit of DE measurement at 137Cs calibration with 0.95 confidence probability, not more | 15 % |
| Complementary relative permissible error limit of photon ionizing radiation DER and DE measurement result caused by ambient temperature deviation from 20 oС, in the temperature range from minus 20 to + 50 oС | 5 % per each 10 оС of deviation from 20 оС |
| Operating supply voltage of the dosimeter from Li-polymer battery with a capacity of at least 400 mAh | 3.7 V |
Time of continuous operation of the dosimeter under normal climatic conditions when powered from a fully charged battery:
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| Unstable readings of the dosimeter during 8 hours of continuous operation, not more | 5 % |
| Energy range of detected gamma radiation by EPD-27 DoseG / DoseGX dosimeters | 0.05 … 10 MeV |
Energy dependence when measuring photon ionizing radiation DER and DE relative to 0.662 MeV energy (137Cs), not more
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| Energy range of detected X-ray radiation by EPD-27 DoseGX dosimeter | 12 … 200 keV |
| Energy dependence of EPD-27 DoseGX when measuring X-ray radiation DER and DE relative to 0.662 MeV energy (137Cs), not more | from minus 30 % to 35 % |
| Operating temperature range | – 20 … + 50 °С |
| Dimensions of the dosimeter with a clip, not more | 84.5 × 55 × 24.5 mm |
| Weight of the dosimeter, not more | 0.11 kg |
Download operating manual
Type Examination Certificate № UA.TR.113-0679-21 dd. 31.12.2021
Certificate of Conformity № UA.TR.113-0679/01F-21 dd. 31.12.2021
Type approval certificate issued by Czech metrology institute that confirms DoseG and DoseGX compliance with the IEC 61526:2010 standard.
When purchasing a batch of dosimeters for use in the automated dose control system for a large number of users, it is possible to additionally supply charging and storing devices (can charge up to 40 dosimeters at a time) and the unified access station with the appropriate software for programming/reading dosimeters (at extra cost).
When purchasing a batch of dosimeters for use in the automated dose control system for a small number of users, it is possible to additionally supply the USB/IrDA adapters with appropriate software for programming/reading/charging dosimeters (at extra cost).
