Detecting Unit of Gamma Radiation

BDBG-09S

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.

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

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

Purpose of Use

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

Delivery Kit

BDBG-09S detecting unit
corbel
operating manual *
logbook
package
assembly parts kit (APK) **
technological kit for calibration and testing of the detecting units ***

* One copy per one consignment of the detecting units

** APK is applied by the user at the production of the connecting cable for connection to the system. Belden 8102 cable (not included in the kit) is recommended. The connecting cable can be supplied in a separate order

*** Is supplied on customer’s request in a separate order

Measurement range of gamma radiation DER with the SDUGR

0.01 … 50 μSv/h

Measurement range of gamma radiation DER with the GMC

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 %

Anisotropy of the detecting unit at gamma quanta incidence at angles from +60^о to -60^о 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 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 -40 °С to +50 °С

5 % per each 10 °С of deviation from 20 °С

Interface

RS-485

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

Operating Manual

Detecting Unit of Gamma Radiation

BDBG-09S

Features

Purpose of Use

Delivery Kit

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