UDKG-37, UDKG-37/1 Detection Devices


Measurement of ambient dose equivalent rate of continuous radiation and average dose rate of pulsed X-ray and gamma radiation in an extremely wide range and under harsh operating conditions.


  • autonomous operation at nuclear and radiation hazardous facilities, including emergency response
  • as a part of area monitoring network
  • restricted area beamline radiation control at linear accelerators (LINACs) and other pulsed-radiation facilities

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UDKG-37 UDKG-37/1
Components BDKG-37 Detection Unit
IU-37 Interface Unit
BDKG-37 Detection Unit
IU-37/1 Interface Unit
Detector Silicon semiconductor detector;
Geiger-Muller counter tube
Energy range 50 keV – 10 MeV
Measurement range of ambient dose equivalent rate *(10) 1 µSv/h – 5000 Sv/h
Limits of tolerable intrinsic relative error ±25%, for *(10)≤10 µSv/h
±15%, for *(10)>10 µSv/h
Measurement range of pulsed radiation average dose rate 30 µSv/s – 0.3 Sv/s (100 mSv/h – 1000 Sv/h)
(pulse repetition rate is not less than 20 cps, duration not less than 1 μs)
Limits of tolerable intrinsic relative error ±25% (for measurement of average dose rate of pulse radiation)
Typical sensitivity to 137Cs gamma radiation 0.15 cps/(µSv·h-1), for *(10)≤0.1 Sv/h
58 mV/(Sv·h-1), for *(10)>0.1 Sv/h
Energy dependence relative to 662 keV (137Cs) ±30%
Response time for 10-fold dose rate change ≤10 s, for *(10)>10 µSv/h
Burn-up life ≥50000 Sv
Protection class IP68 (Resistance to static hydraulic pressure up to 400 kPa; water immersion depth up to 40 m) (BDKG-37)
IP65 (IU-37)
Interface RS485 RS232
Operation temperature range -40°С to +60°С
Dimensions, weight Ø30×130 mm, 0.25 kg (BDKG-37)
170x80x55 mm, 0.3 kg (IU-37)

Design and specifications are subject to change without notice.
For details please refer to the datasheet.


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