Polimaster Innovating radiation detection technologies since 1992

Gamma Radiation Detector BDG3 for PM1403

Category: Smart Probes

Gamma radiation detector BDG3 performs the following functions: measurement of dose equivalent rate (DER) of X-ray and gamma radiation, search for the photon radiation sources, registration and accumulation of photon radiation scintillation spectra.

BDG3 can be used by emergency services, radiological and isotope laboratories, customs and border services, nuclear industry facilities, to search, detect and localize radioactive and nuclear sources and prevent illicit trafficking of radioactive and nuclear materials.

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Operation Principle

BDG3 is connected to the Spectroscopic Radiation Monitor PM1403, Display and Control Unit РМ1403 and Display and Control Unit РМ1403-01 or a PC via RS-485 or USB. Operation algorithm enables continuous measurement process, processing of the measurement results and quick adaptation to radiation intensity changes. In the programming mode BDG3 enables recording of data into the non-volatile memory, continuous control over the DER threshold level, sound/visual alarm if the set DER level is detected or exceeded.

Operating Mode

The BDG3 operates in the following modes:

  • DER measurement of photon radiation
  • search for the photon radiation sources
  • registration and accumulation of the photon radiation scintillation spectra
  • identification of the radionuclide matter composition
  • programming of the operation modes

Radiation Detectors Set PM1403

BDG2 - GM detector, gamma radiation detector

BDG3 - Csl(Ti) detector, gamma radiation detector

BDN - He-3 detector, neutron radiation detector

BDAB - proportional counter, alpha-beta radiation detector


  • Exploration Geology
  • Surface Contamination
  • Laboratory Equipment
  • Workplace Safety

Standards Compliance

Corresponds to EN 55022:2010 (B class) requirements by the level of emitted radio-noise


Detector Csl(TI)
Dose equivalent rate (DER) measurement range from 0.1 to 40 μSv/h
DER measurement accuracy no more than ± 25 %
Thresholds from 0.1 to 40 μSv/h (DER levels)
Energy range from 0.05 to 3.0 MeV
Alarm Type audible, visual
Energy range from 0.05 to 3.0 MeV
Energy response relative to 0.662 MeV:
137Cs energy no more than minus 30 %
Instrument sensitivity:
for 137Cs in the search mode 200.0 s-1/(μSv/h)
Count rate indication range in the search mode from 1.0 to 9999 s-1
Quantity of accumulation channels:
gamma-radiation scintillation spectra 1024
Data exchange RS-485 interface, USB
Power supply from the accumulator battery 3.6 (minus 0.6; +0.7) V
Ingress protection IP65
Weight 0.2 kg
Dimensions 133x40 mm
Mean time between failures 20000 hours
Mean service lifetime 10 years
Mean recovery time 60 minutes
Operating temperature from -20 up to + 50 °С
Humidity up to 95 % at 35 °С
Atmospheric pressure from 84 up to 106.7 kPa

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