| Measurement of gamma and X-ray radiation parameters |
| DER measurement range of photon ionizing radiation |
μSv/h |
0.1 … 100 000 |
| DER indication range of photon ionizing radiation |
μSv/h |
0.01 … 100 000 |
| Range of pulse counting speed indication from the of alphabeta-gamma radiation counter |
cps |
0 … 9999 |
| Main relative permissible error limit when measuring DER of photon ionizing radiation at 137Cs calibration with 0.95 confidence probability |
% |
15+2/М, where M is a dimensionless value, equal to the DER numeric value measured in μSv/h |
| Energy range of the recorded photon ionizing radiation |
MeV |
0.012 … 3.00 |
- Energy dependence of radiometer readings when measuring photon-ionizing radiation DER relative to 0.662 MeV (137Cs):
- – in the energy range from 0.012 to 0.040 MeV, not more
- – in the energy range from 0.040 to 1.25 MeV, not more
|
% |
|
| Measurement of beta parameters |
| Measurement range of beta particles surface flux density |
part./(cm2×min) |
5 … 999 999 |
| Measurement range of beta-emitting radionuclides surface activity |
Bq/cm2 |
0.22 … 9999for C0 type sources(90Sr/90Y) |
| Main relative permissible error limit when measuring beta particles surface flux density at 90Sr/90Y calibration with 0.95 confidence probability |
% |
20+150/F, where F is a dimensionless value, equal to the numeric value of beta particles surface flux density measured in part./(cm2×min) |
| Main relative permissible error limit when measuring the beta-emitting radionuclides surface activity at 90Sr/90Y calibration with 0.95 confidence probability from C0 source type |
% |
20+10/А, where A is a dimensionless value equal to the numeric value of surface activity of beta-emitting radionuclides measured in Bq/cm2 |
| Energy range of the registered beta particles |
MeV |
0.15 … 3.0 |
| Measurement of alpha parameters |
| Measurement range of alpha particles surface flux density |
part./(cm2×min) |
5 … 999 999 |
| Measurement range of alpha emitting radionuclides surface activity |
Bq/cm2 |
0.2 … 9999for P9 source type(239Pu) |
| Main relative permissible error limit when measuring the alpha particles surface flux density at 239Pu calibration with 0.95 confidence probability |
% |
20+150/F, where F is a dimensionless value, equal to the numeric value of alpha particles surface flux density measured in part./(cm2×min) |
| Main relative permissible error limit when measuring the alpha-emitting radionuclides surface activity at 239Pu calibration with 0.95 confidence probability from the reference P9 source type |
% |
20+10/А, where A is a dimensionless value, equal to the numeric value of alphaemitting radionuclides surface activity measured in Bq/cm2 |
|
| Detector type |
|
alpha-beta-gamma-sensitive GeigerMueller counter with mica window |
| Window area |
cm2 |
13.8 |
| Typical sensitivity to photon ionizing radiation with 0.662 MeV energy (137Cs) |
(pulse·c)/μSv/h |
4.5 |
| Time of continuous operation of the radiometer powered by two new batteries with a capacity of 1200 mA/h at a temperature of 20°C and under conditions of gamma background not more than 0.5 μSv/h, audio signaling of registered gamma radiation and display switched off, not less than |
h |
2000 |
| Nominal supply voltage of the radiometer from two AAA batteries |
V |
3.0 |
| Operating temperature range |
°С |
-20 … +50 |
| Dimensions of the radiometer |
mm |
160 x 75 x 37 |
| Length of the folded telescopic rod |
cm |
43 |
| Length of the unfolded telescopic rod |
cm |
143 |
| Weight of the telescopic rod |
kg |
0.42 |
| Weight of the radiometer without a telescopic tube, not more than |
kg |
0.4 |
| Weight of the radiometer in the packing box |
kg |
4.2 (packing box – 3.2) |
