Specification
| Pedestrian Radiation Monitors | |
| False alarm rate | ≤1 for 8 h of continuous operation |
| PC interface | RS 485 |
| Continuous battery operation time | ≥6 h |
| Protection class | IР65 |
| Overall dimensions, weight | depending on configuration |
| Gamma radiation detection unit | BDKG-19 | BDKG-35 | BDRM-05 |
| Scintillation detector | NaI(Tl) Ø63×160 mm | Plastic Ø70х150 mm | Plastic 1000х100х50 mm |
| Energy range | 50 keV – 3 MeV | 20 keV – 3 MeV | 50 keV – 3 MeV |
| Typical sensitivity, cps/(µSv·h-1) | 32500 [241Am]
4900 [137Cs] 2800 [60Co] |
10000 [241Am]
3600 [137Cs] 2300 [60Co] |
60000 [241Am]
31500 [137Cs] 16500 [60Co] |
| Minimal detectable gamma radiation dose rate level above background value 0.1 µSv/h in a period not longer than 2 s | 0.03 µSv/h | 0.04 µSv/h | 0.01 µSv/h |
| Detection threshold for unshielded source at 1 m height under natural radiation background conditions not more than 0.1 µSv/h
(Distance to source 1 m, source travel speed 5 km/h, probability of source detection 80 % under confidence level Р=0.95) |
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| One detection unit | 430 kBq [241Am]
220 kBq [137Cs] 100 kBq [60Co] |
1180 kBq [241Am]
230 kBq [137Cs] 100 kBq [60Co] |
800 kBq [241Am]
110 kBq [137Cs] 60 kBq [60Co] |
| Two detection units | 320 kBq [241Am]
160 kBq [137Cs] 70 kBq [60Co] |
860 kBq [241Am]
170 kBq [137Cs] 70 kBq [60Co] |
580 kBq [241Am]
80 kBq [137Cs] 40 kBq [60Co] |
| Neutron radiation detection unit | BDKN-01 | BDKN-05 |
| Detector | He-3 proportional counter in polyethylene moderator | Two He-3 proportional counters in polyethylene moderator |
| Energy range | 0.025 eV – 14 MeV | 0.025 eV – 14 MeV |
| Typical sensitivity to source radiation at the distance of 1 m, cps/(neutron·s-1·cm-2) | 1.3 [252Cf] | 20 [252Cf] |
| Source detection threshold at 1 m height
(Distance to source 1 m, source travel speed 5 km/h, probability of source detection 80% under confidence level Р=0.95) |
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| One detection unit | 2.2·105 neutron/s [252Cf] | 2.3·104 neutron/s [252Cf] |
| Two detection units | – | 1.6·104 neutron/s [252Cf] |
