- Photon-ionizing radiation sensitivity of (137Cs) CsI(Tl) scintillation detector
- Upon customer’s request the sensitivity can be changed to a value of no less
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- 200 cps/(µSv/h)
- 450 cps/(µSv/h)
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Neutron radiation sensitivity while using the LiI(Eu) scintillation detector
- – for thermal neutrons, no less
- – for fast neutrons, no less
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- 1.2 ± 0.12 pulse·cm2/n
- 0.12 ± 0.012 pulse·cm2/n
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Total measurement and display range of photon-ionizing DER- from built-in scintillation detecting unit of photon-ionizing radiation- from built-in Geiger-Muller counter |
- 0.01…106 μSv/h
- 0.01 … 50 μSv/h
- 50 … 106 μSv/h
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Measurement and display range of photon-ionizing DE from the Geiger-Muller counter |
0.1 … 9.9·106 μSv |
Display range of neutron radiation DER |
0.01 … 104 μSv/h |
Display range of pulse count rate of photon-ionizing radiation |
1 … 25 000 cps |
Display range of pulse count rate of neutron radiation from the scintillation neutron detecting unit |
0.01 … 25 000 cps |
Main relative permissible error limit when measuring photon-ionizing radiation DER from the scintillation detecting unit of photon-ionizing radiation at 0.95 confidence probability (137Cs) |
(15+1/H*(10)) %, where H*(10) is a numeric value of measured DER in μSv/h |
Main relative permissible error limit when measuring photon-ionizing radiation DER and DE from the Geiger-Muller counter at 0.95 confidence probability (137Cs) |
15 % |
Energy range of registered photon-ionizing radiation |
0.02 … 3 MeV |
Energy dependence of the device’s readings when measuring photon-ionizing radiation DER and DE in the energy range from 0.05 MeV to 3 MeV relative to 0.662 MeV energy (137Cs) |
± 25 % |
Energy range of registered neutron radiation |
2.5·10-8 … 14 MeV |
Set-up time of the device operation, not more |
1 min |
Calibration time by the level of gamma background |
2 … 90 s |
Response time to over 10 times change of photon-ionizing radiation DER |
0.25 s |
Operating supply voltage |
3.7 V |
- Time of continuous operation of the device when powered from the charged lithium-polymer battery under background of gamma radiation no more than 0.5 μSv/h
- – a switched-off display backlight, with no alarm triggering and a switched-off GPS receiver, no less
- – a switched-off display backlight, with no alarm triggering and a switched-on GPS receiver, no less
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Operating temperature range |
– 20 … + 50 °С |
Dimensions of the device with no clip (the clip included), no more |
67 × 128 × 30 (45) mm |
Weight of the device, no more |
0.28 kg |