Key metrological and technical data and specifications of EPD-27 “DoseG” dosimeter |
|
Measurement and indication range of gamma radiation DE |
1∙10-7 … 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∙10-6 Sv to 10 Sv |
15 % |
Measurement and indication range of gamma radiation DER |
1∙10-6 … 10 Sv/h |
Main relative permissible error limit when measuring gamma radiation DER at 137Cs calibration with a confidence probability of 0.95: |
|
– in the range from 1∙10-5 Sv/h to 1∙10-3 Sv/h (inclusive) |
20 % |
– in the range from 1∙10-3 Sv/h to 10 Sv/h |
15 % |
Energy range of detected gamma radiation |
0.05 … 10 MeV |
Energy dependence when measuring gamma radiation DER and DE relative to 0.662 MeV (137Cs) energy, not more than: |
|
– in the energy range from 0.05 MeV to 1.25 MeV (inclusive) |
±20 % |
– in the energy range from 1.25 MeV to 10 MeV |
±40 % |
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: |
|
– for 137 Cs and 60Co radionuclides; |
25 % |
– for 241Am radionuclide; |
60 % |
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 -20 to +50 oС |
5 per each 10 оС of deviation from 20 оС |
Operating supply voltage of the dosimeter from Li-Po battery with a capacity of at least 400 mAh |
3.7 V |
Time of continuous operation under normal climatic conditions when powered from a fully charged battery, not less than: |
|
– under the conditions of measurement of gamma radiation DER not more than 0.5 μSv/h and with switched off LCD backlight, switched off sound and vibration alarm |
170 hrs |
– under the conditions of measurement of gamma radiation DER equal to 1 Sv/h and with switched on LCD backlight, switched on sound and vibration alarm |
4 hrs |
Unstable readings of the dosimeter during 8 hours of continuous operation, not more than |
5 % |
Mean life of the dosimeter (including repairs), not less than |
10 year |
Mean time to failure, not less than |
6 000 hrs |
Average life of the dosimeter till the first major repair, not less than |
10 000 hrs |
Climatic conditions of the environment: |
|
– temperature; |
-20 … +50 оС |
– relative humidity at a temperature of 35 °C |
95 ± 3 % |
– atmospheric pressure |
84 … 106.7 kPa |
Dimensions of the dosimeter with a clip, not more than |
84.5 x 55.0 x 24.5 mm |
Weight without packaging, not more than |
0.11 kg |
Class of external electromagnetic conditions according to DSTU OIML D 11:2018 |
E2 |
lass of external mechanical conditions according to DSTU OIML D 11: 2018 |
M1 |
Key metrological and technical data and specifications of EPD-27 “DoseGX” dosimeter |
|
Measurement and indication range of gamma radiation DER |
1∙10-6 to 10 Sv/h |
Measurement and indication range of X-ray DER |
1∙10-6 … 1∙10-1 Sv/h |
Main relative permissible error limit when measuring photon-ionizing radiation DER at 137Cs calibration with a confidence probability of 0.95: |
|
– in the range from 1∙10-5 Sv/h to 1∙10-3 Sv/h (inclusive) |
20 % |
– in the range from 1∙10-3 Sv/h to 10-1 Sv/h |
15 % |
– in the range from 1∙10-1 Sv/h to 10 Sv/h |
15 % |
Measurement and indication range of gamma and X-ray radiation DE |
1∙10-7 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∙10-6 Sv to 10 Sv |
15 % |
Energy range of detected gamma radiation |
0.05 … 10 MeV |
Energy dependence when measuring gamma radiation DER and DE relative to 0.662 MeV (137Cs) energy, not more than: |
|
– in the energy range from 0.05MeV to 1.25 MeV (inclusive) |
±20 % |
– in the energy range from 1.25MeV to 10 MeV |
±40 % |
Energy range of detected X-ray |
12 … 200 keV |
Anisotropy when gamma radiation falls in directions at angles from -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: |
|
– for 137Cs and 60Co radionuclides |
25 % |
– for 241Am radionuclide |
60 % |
|
-30 … +35 % |
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 -20 to +50 oС |
5 % per each 10 оС of deviation from 20 оС |
Operating supply voltage of the dosimeter from Li-Po battery with a capacity of at least 400 mAh |
3.7 V |
Time of continuous operation under normal climatic conditions when powered from a fully charged battery, not less than: |
|
– under the conditions of measurement of gamma radiation DER not more than 0.5 μSv/h and with switched off LCD backlight, switched off sound and vibration alarm |
170 hrs |
– under the conditions of measurement of gamma radiation DER equal to 1 Sv/h and with switched on LCD backlight, switched on sound and vibration alarm |
4 hrs |
Unstable readings of the dosimeter during 8 hours of continuous operation, not more than |
5 % |
Mean life of the dosimeter (including repairs), not less than |
10 year |
Mean time to failure, not less than |
6 000 hrs |
Average life of the dosimeter till the first major repair, not less than |
10 000 hrs |
Climatic conditions of the environment: |
|
– temperature; |
-20 … +50 °C |
– relative humidity at a temperature of 35 °C; |
95 ± 3 % |
– atmospheric pressure |
84 … 106.7 kPa |
Dimensions of the dosimeter with a clip, not more than |
84.5 x 55.0 x 24.5 mm |
Weight without packaging, not more than |
0.11 kg |
Class of external electromagnetic conditions according to DSTU OIML D 11:2018 |
E2 |
Class of external mechanical conditions according to DSTU OIML D 11: 2018 |
M1 |