Detecting Unit of Gamma Radiation

  • Highly sensitive scintillator CsI (Tl) with silicon photomultiplier
  • Availability of amplitude spectrum (1024 channels)
  • Ingress protection rating IP67
  • An option of a waterproof housing IP68
  • Complies with IEC 61000-4-2:2008, IEC 61000-4-3:2007, IEC 61000-4-4:2008 standards
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    BDBG-09 for Gamma Radiation Detection




    BDBG-09S is used for mobile laboratories, as a part of data panels and automated radiation monitoring systems.

    It is produced using a highly sensitive scintillator CsI (Tl) with silicon photomultiplier and a Geiger-Muller counter. If the customer chooses so, BDBG-09S can be made of duralumin or stainless steel. A special version of BDBG-09SW detecting unit with a waterproof housing IP68 has been developed for use in waters basins or artificial reservoirs.

    BDBG-09S detecting unit can be used as a part of systems instead of BDBG-09 detecting unit for measurement of dose equivalent rate of gamma radiation and temperature without software change.

    Purpose of Use

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


    • Highly sensitive scintillation CsI (Tl) detector with a photomultiplier for measurements in the range within 0.01 μSv/h to 50 μSv/h (spectrum-dose function)

    • Energy-compensated Geiger-Muller counter for measurements in the range within 50 μSv/h to 1 Sv/h

    • Data exchange between the detecting unit and the data display system through RS-485 interface

    • Indication of the statistical measurement error

    • Constant self-testing


    Measurement range of gamma radiation DER:

    а) built-in scintillation detector (high-sensitivity channel)

    b) built-in Geiger-Muller counter (low-sensitivity channel)

    0.01 … 106 μSv/h

    0.01 … 50 μSv/h

    50 … 106 μSv/h

    Main relative permissible error limit of gamma radiation DER measurement at 137Cs calibration with confidence probability of 0.95 (15+1/H*(10)) %, where H*(10) is a numeric value of gamma radiation DER in μSv/h
    Energy range of registered gamma radiation 0.05 … 3 MeV
    Energy dependence of measurement results of the detecting unit at gamma radiation DER measurement in the energy range of 0.05 MeV to 1.25 MeV ± 25 %
    Operating supply voltage range of the detecting unit from external regulated power supply 7 … 32 V
    Consumption current of the detecting unit for overall range of measured gamma radiation DER, not more 30 mА
    Setup time of operating mode and measurement time of the detecting unit, not more 3 min
    Unstable readings of the detecting unit during 24-hour continuous operation, not more 5 %
    Complementary permissible error limit of measurement caused by ambient temperature change from minus 40 °С to +50 °С 5 % per each 10 °С of deviation from 20 °С
    Operating temperature range – 40 … + 50 °С
    Dimensions of the detecting unit without fastening elements, not more 60 × 60 × 170 mm


    Weight of the detecting unit without fastening elements, not more 0.5 kg
    Download operating manual


    • Certificate of Conformity № UA.TR.113-0113/01F-17 from September, 25 2017

    • Type Examination Certificate № UA.TR.113-0113-17 from September, 18 2017

    • Pattern Approval Certificate of Measuring Instruments # UA-MI/1-1717-2005 of August 15, 2005 (У2071-05 number in the State Register for Measuring Instruments)

    • Declaration of conformity with the CE standards. The tests for compliance have been conducted at BICON laboratories B.V. (the Netherlands)

    Delivery Kit

    • detecting unit of gamma radiation
    • corbel
    • operating manual (one copy per batch)
    • logbook
    • package
    • technological kit for calibration and testing of the detecting units (at request)
    • connecting cable (at request)
    • mounting parts kit (to be ordered before the production of the connecting cable)