Electronic Personal Dosimeter EPD-27
DoseG and DoseGX represent a new family of electronic personal dosimeters from the ECOTEST brand.
Dosimeters are intended for use as part of an automated system of individual dosimetric control and for autonomous use. Electronic personal dosimeters EPD-27 are available in two modifications – DoseG and DoseGX.
Dosimeters are used in nuclear power plants, medicine, industry, radiological laboratories, and in institutions where they use sources of photon ionizing radiation.
Measurement of gamma and X-ray radiation individual dose equivalent (DE).
Measurement of gamma and X-ray radiation individual dose equivalent rate (DER).
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.
Wide energy measuring range from 12 keV to 10 MeV (DoseGX model).
Two threshold levels for DE, DER, and the time spent in the control zone.
It may be used as a part of the automated IDC system.
Compliance with the requirements of the International Standard IEC 61526.
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 1.0 m on a hard surface.
| Measurement and indication range of gamma radiation DE | from 0.1 μSv to 10 Sv |
| Main relative permissible error limit when measuring gamma radiation DE at 137Cs calibration with a confidence probability of 0.95 within the range of 1 μSv to 10 Sv | 15% |
| Measurement and indication range of gamma radiation DER | 1 μSv/h to 10 Sv/h |
Main relative permissible error limit when measuring gamma radiation DER at 137Cs calibration with a confidence probability of 0.95
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Anisotropy when gamma radiation falls in directions at angles from minus 60о to 60о in the horizontal and vertical planes relative to the main (perpendicular to the front panel of the dosimeter) measurement direction, not more than:
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| Complementary relative permissible error limit of photon-ionizing radiation DER and DE measurement result caused by ambient temperature deviation from 20oС, in the temperature range from minus 20 to + 50oС | ±5% per each 10 оС of deviation from 20 оС |
| Unstable readings of the dosimeter during 8 hours of continuous operation, not more than | 5% |
| Energy range of detected gamma radiation: | from 50 keV to 10 MeV |
Energy dependence when measuring gamma radiation DER and DE relative to 0.662 MeV (137Cs) energy, not more than:
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| Dimensions of the dosimeter with a clip, not more than | 84.5 × 55.0 × 24.5 mm |
| Weight of the dosimeter, not more than | 0.11 kg |
| Operating temperatures range | from -20 °С to +50 °С |
| Ingress protection rating | IP67 |
| Continuous operation time from the built-in Li-Po battery under normal gamma background, display backlight and alarm turned off, not less than | 170 h |
| Operating supply voltage of the dosimeter from Li-Po battery with a capacity of at least 400 mAh | 3.7 V |
| Mean life of the dosimeter (including repairs), not less than | 10 years |
| Mean time to failure, not less than | 6000 h |
| Average recovery time of the dosimeter | 4 h |
| Average shelf life of the dosimeter if the battery is recharged 6 months after the start of storage, not less | 10 years |
| Measurement and indication range of gamma and X-ray radiation DE: | from 0.1 μSv to 10 Sv |
| Main relative permissible error limit when measuring gamma and X-ray radiation DE at 137Cs calibration with a confidence probability of 0.95 within the range of 1 μSv to 10 Sv | 15% |
| Measurement and indication range of gamma radiation DER: | from 1 μSv/h to 10 Sv/h |
Main relative permissible error limit when measuring photon-ionizing radiation DER at 137Cs calibration with a confidence probability of 0.95:
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| Energy range of detected X-ray: | from 12 to 200 keV |
| Energy dependence when measuring X-ray radiation DER and DE relative to 0.662 MeV (137Cs) energy, not more than: |
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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
When purchasing a batch of dosimeters for use in an automated dose control system with a large number of users, it is possible to additionally supply devices CCD for charging and storing (can charge up to 40 dosimeters at a time) and device for programming/reading dosimeters – a unified access device with the appropriate software.
When purchasing a batch of dosimeters for use in an automated dose control system with a small number of users, it is possible to additionally supply USB/IrDA adapters with appropriate software for programming/reading and charging dosimeters.
