Intelligent Detecting Unit of Gamma Radiation

  • Сonforms to the CE standards
  • Meets the requirements of IEC 61000-4-2:2008, IEC 61000-4-3:2007, IEC 61000-4-4:2008 standards.


BDBG-09 is used both within data panels and automated systems of radiation monitoring to measure ambient dose equivalent rate of gamma radiation.
A standard version of the detecting unit is produced with a built-in Geiger-Muller counter.
BDBG-09 detecting unit has been successfully used for many years at many nuclear power plants.

Purpose of Use

Measurement of ambient dose equivalent rate (DER) of gamma radiation.


  • Data exchange between the detecting unit and the data display system through RS-485 interface.
  • Constant self-testing.
  • Indication of the statistical measurement error.
  • Ingress protection rating – ІР67.
  • Average service life of the detecting unit – not less than 10 years.


  • Measurement range of gamma radiation DER and main relative error
    0.05 µSv/h…10 Sv/h;(0.05 µSv/h…100 Sv/h on demand)
    ±(15+2/H*(10))%, where H*(10) is a numeric value of measured DER equivalent to µSv/h
  • Energy range of registered gamma and X-ray radiation and energy dependence
    0.05…3.0; (0.05…1.25; ±25%) MeV
  • Integration time
    2…420 seconds
  • Setup time of operating mode of the detecting unit
    3 min
  • Operating supply voltage of the detecting unit from external power supply
    7 … 13 V
  • Maximum current consumption of the detecting unit
    30 mA
  • Operating temperature range
    -40…+60 °С
  • Weight of the detecting unit without fastening elements
    0.5 kg
  • Dimensions of the detecting unit without fastening elements
    170x60x60 mm

Delivery Kit

  • BDBG-09 detecting unit of gamma radiation;
  • corbel for vertical mounting of the unit;
  • cable connector;
  • technological kit used for testing of the detecting units (one kit per one consignment of the detecting units on demand), including: serial port adapter with power supply unit for а PC connection; technological cables (2 pcs.); technological software CD (1 pc.);
  • technical description and operating manual (one copy per one consignment of the detecting units);
  • logbook;
  • packing box.
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