Intelligent Detecting Unit of Gamma Radiation

BDBG-09

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. A modification based on the scintillation detector is also available. Upon customer request the BDBG-09 housing can be made of duralumin or stainless steel. A special version of the detecting unit with waterproof housing has been developed for use in waterbodies and artificial reservoirs.

BDBG-09 detecting unit has been successfully used for many years at nuclear power plants in Ukraine, France, Bulgaria and Korea.

To obtain information about our products during the preparation of tender or contractual documentation, please contact our representatives via the provided contacts. We continuously improve our products and expand their functionality in line with market needs by applying the latest technologies, modern components, and materials. Therefore, specifications, descriptions, and configurations are subject to change without prior notice.

Features

  • 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

Purpose of Use

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

Delivery Kit

  • BDBG-09 detecting unit
  • corbel
  • operating manual *
  • logbook
  • packing
  • assembly parts kit (APK) **
  • technological kit ***
  • PI-09 interface ***
  • passport ***

* One copy per one consignment of the detecting units
** APK is applied by the user in producing a connecting cable for connection to the system. Belden 8102 cable with added screen is recommended. The connecting cable should be ordered additionally
*** Supplied on the customer’s demand in a separate order

Specifications
Measurement range of gamma radiation DER
0.04 ... 107 μSv/h
Basic relative permissible error limit of gamma radiation DER measurement with confidence probability of 0.95
(15+2/H(10)) %, where H(10) is a numeric value of gamma radiation DER, equivalent to 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 %
Anisotropy of the detecting unit at gamma quanta incidence at angles +60о ... -60о horizontally and vertically relative to the main measurement direction, marked by a “+” symbol , does not exceed:
- for 137Cs and 60Со isotopes
25 %
- for 241Am isotope
60 %
Operating supply voltage of the detecting unit from external regulated power supply
7 ... 13.5 V
Useful current of the detecting unit shall not exceed
- without PI-09 interface converter
30 mA
- using PI-09 interface converter
155 mA
Time of operating mode setting and measurement time of the detecting unit, not more than
3 min
Unstable readings of the detecting unit during 24-hour continuous operation, not more than
5 %
Complementary permissible error limit at measurement caused by ambient temperature change from -40 oC to +75 oC
±5 per each 10 оС deviation relative to (20 ± 5) оС
Interface
RS-485
Operating temperature range
-40 … +75 °С
Dimensions, not more than
- detecting unit without fastening elements
60 x 60 x 170 mm
- PI-09 interface converter without fastening elements
80 x 150 x 200 mm
Weight:
- detecting unit without fastening elements
0.5 kg
- PI-09 interface converter without fastening elements
2.4 kg
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BDBG-09 Intelligent Detecting Unit of Gamma Radiation
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