| Measurement range of photon-ionizing radiation DER |
0.1 … 100 000 μSv/h |
| Display range of photon-ionizing radiation DER |
0.01 … 100 000 μSv/h |
| Main relative permissible error limit when measuring photon-ionizing radiation DER at 137Cs calibration with a confidence probability of 0.95 |
(15+2/М) %,
where M is a dimensionless value that is numerically equal to the DER value measured in μSv/h |
| Energy range of photon-ionizing radiation being registered |
0.012 … 3 МеV |
| 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 0.04 MeV, not more
– in the energy range from 0.04 to 1.25 MeV, not more |
± 35 %
± 25 % |
| Measurement range of surface beta-particles flux density |
5 … 999 999 part./(cm2×min) |
| Display range of surface beta-particles flux density |
1 … 999 999 part./(cm2×min) |
| Measurement range of surface activity of beta-emitting radionuclides |
0.22 … 9 999 Bq/cm2
for С0 source type (90Sr/90Y)
(efficiency of С0 type sources is 0.377) |
| Display range of surface activity of beta-emitting radionuclides |
0.01 … 9 999 Bq/cm2 |
| Main relative permissible error limit when measuring surface beta-particles flux density in the range from 5 part./(cm2×min) to 999 999 part./(cm2×min) at 90Sr/90Y calibration with a confidence probability of 0.95 |
(20+150/F) %,
where F is a dimensionless value that is numerically equal to the value of surface beta-particles flux density measured in part./(cm2×min)
|
| Main relative permissible error limit when measuring surface activity of beta-emitting radionuclides in the range from 0.22 Bq/cm2 to 9 999 Bq/cm2 at 90Sr/90Y calibration with a confidence probability of 0.95 from С0 source type |
(20+10/А) %,
where А is a dimensionless value that is numerically equal to the value of surface activity of beta-emitting radionuclides measured in Bq/cm2 |
| Energy range of beta-particles being registered |
0.15 … 3 MeV |
|
Measurement range of surface alpha-particles flux density |
5 … 999 999 part./(cm2×min) |
| Display range of surface alpha-particles flux density |
1 … 999 999 part./(cm2×min) |
| Measurement range of surface activity of alpha-emitting radionuclides |
0.2 … 9 999 Bq/cm2
for П9 source type (239Pu)
(efficiency of П9 type sources is 0.490) |
| Display range of surface activity of alpha-emitting radionuclides |
0.01 … 9 999 Bq/cm2 |
| Display range of pulse count rate from alpha, beta, gamma radiation counter |
0.001 … 9 999 cps |
| Main relative permissible error limit when measuring surface alpha-particles flux density in the range from 5 part./(cm2×min) to 999 999 part./(cm2×min) at 239Pu calibration with a confidence probability of 0.95 |
(20+150/F) %,
where F is a dimensionless value that is numerically equal to the value of surface alpha-particles flux density measured in part./(cm2×min) |
| Main relative permissible error limit when measuring surface activity of alpha-emitting radionuclides in the range from 0.2 Bq/cm2 to 9 999 Bq/cm2 at 239Pu calibration with a confidence probability of 0.95 from a standard П9 source type |
(20+10/А) %,
where A is a dimensionless value that is numerically equal to the value of surface activity of alpha-emitting radionuclides measured in Bq/cm2 |
| Window area |
13.8 сm2 |
| Typical sensitivity to photon-ionizing radiation with an energy of 0.662 MeV (137Cs) |
4.5 cps/(μSv/h) |
| Time of operating mode setting of the radiometer, not more |
1 min |
| Time of continuous operation of the radiometer when powered from a new battery of two 1 200 mAh AAA galvanic cells under normal conditions and given gamma background not more than 0.5 μSv/h, disabled sounding of registered gamma quanta and disabled backlight of the scale, not less |
2 000 h |
| Operating supply voltage |
3 V |
| Additional relative permissible error limit when measuring photon-ionizing radiation DER, surface beta-particles flux density and surface alpha-particles flux density in the range of supply voltage from 2.4 V to 3.2 V |
± 5 % |
| Additional relative permissible error limit when measuring photon-ionizing radiation DER, surface beta-particles flux density and surface alpha-particles flux density caused by changes in the environmental temperature from minus 20 °С to + 50 °С |
± 0.5 %
per each 1°С of deviation from 20 °С |
| Operating temperature range |
– 20 … + 55 °С |
| Overall dimensions of the radiometer, not less |
160 × 75 × 37 mm |
| Length of the folded telescopic rod |
382 mm |
| Length of the unfolded telescopic rod |
937 mm |
| Weight of a telescopic rod |
0.21 kg |
| Weight of the radiometer without a telescopic rod, not more |
0.4 kg |
| Weight of the radiometer in package, not more |
4.2 kg (case – 3.2 kg) |
