Detecting Unit of Gamma Radiation

  • The best choice for unmanned aerial vehicles and mobile robotic devices
  • Highly-sensitive scintillation detector
  • No microphone effect
  • IP65 ingress protection rating

BDBG-15S is designed to measure ambient dose equivalent rate of gamma radiation in a wide range of values. Suitable for unmanned aerial vehicles, mobile robotic devices and automated systems of radiation monitoring.
The distinctive features of this unit are high sensitivity with minimal weight and dimension parameters, high mechanical resistance and lack of microphone effect. Ingress protection rating of the unit is IP65. Measurement range can be extended up to 5.0 Sv/h at the customer’s request.
BDBG-15S is available in two modifications: BDBG-15S-09 and BDBG-15S-23, which differ in size and sensitivity of scintillation detector.

Purpose of Use
Intelligent detecting units for measurement of ambient dose equivalent rate (DER) of gamma radiation in a wide range of values.


  • High sensitivity regardless of minimum weight and dimensions
  • Ability to extend a measurement range up to 5.0 Sv/h (on request)
  • Ingress protection rating – ІР65.
  • High mechanical immunity
  • No microphonics

Detector types

Scintillation CsI (Tl) detector with a photomultiplier for measurements in the 0.01 μSv/h to 50 μSv/h range (spectrum-dose function):

  • 9 cm3 for BDBG-15S-09
  • 23 cm3 for BDBG-15S-23
  • Energy-compensated Geiger-Muller counter for measurements in the 50 μSv/h to 1.0 Sv/h range


  • Measurement range of gamma radiation DER

from 0.01 μSv/h to 1.0 Sv/h

  • Main relative error in measurements

not more than 15 %.

  • Energy range

from 50 keV to 3.0 MeV

  • Energy dependence

not more than ±25 %

  • Sensitivity for 137Сs at 1.0 μSv/h not less than:
    • 180 cps for BDBG-15S-09
    • 500 cps for BDBG-15S-23
  • Operating temperature range
    from -30 to +50 оС
  • Supply voltage
    12 V
  • Current consumption
    not more than 50 mA
  • Digital interface
    RS-485 or UART(RX,TX-3.3V), selected by the customer
  • Weight, not more than:
    • 0.25 kg for BDBG-15S-09
    • 0.35 kg for BDBG-15S-23
  • Dimensions:
    • 57×103×28.5 mm for BDBG-15S-09
    • 70×140×37 mm for BDBG-15S-23

Delivery Kit

  • detecting unit
  • connecting cable with a connector
  • passport
  • packing box
Other products