KDU-6BM is a state-of-the-art development replacing the outdated Soviet KDU-6B unit, which, unlike its predecessor, allows taking measurements ranging from background values, as well as more accurate determining of the direction towards the detected radiation source (four detecting units have been applied instead of two).

The product is a part of the ship’s life support system and is designed to collect, process, visualize information about radiation environment aboard and determine the direction towards the source of radiation in order to take measures on crew protection from ionizing radiation and radioactive contamination, and ship maneuvering in the area that has been exposed to radioactive contamination from nuclear weapons, man-triggered disasters or other reasons.



Key specifications of the detecting units
Name Unit of measurement Standardized values
Measurement range of gamma radiation DER µSv/h 0.05 – 107
Main relative permissible error limit of DER measurement at 137Cs calibration with 0.95 confidence probability % ±( 15+2/H*(10)),where H*(10) – is a numeric value of DER in µSv/h
Energy range of the detected gamma radiation MeV 0.05 – 3.00
Energy dependence of measurement results of the detecting unit while gamma DER measurement within the energy range from 0.05 to 1.25 MeV % ±30
Anisotropy of the detecting unit at gamma quanta incidence at angles from + 60o to -60o on horizontal and vertical planes with regard to the main measurement direction marked with “+” symbol, for 137Cs and 60Co isotopes does not exceed % ± 30
Operating supply voltage range of the detecting unit from external stabilized power supply V 7 – 13
Useful current of the detecting unit for the whole range of the measured gamma radiation DER, not more than mA 30
Time of operating mode setting and measurement time of the detecting unit, not more than min 3
Unstable readings of the detecting unit during 24 hours of continuous operation, not more than % 5
Additional relative permissible error limit at measurement caused by environmental temperature change from – 40 to +60 оC % 5 per each 10 оC of deviation from +20 оC
Interface RS-485
Dimensions of the detecting unit without fastening elements, not more than mm 100 х 80 х 250
Weight of the detecting unit without fastening elements, not more than kg 0.5
Ingress protection rating IP57
Environment of use
– air temperature оС -40 – +60
– relative humidity up to 100 % given +50 оС and lower temperatures with humidity condensation
Key specifications of the concentrator unit
Name Unit of measurement Standardized values according to specifications
Range of gamma radiation DER values display µSv/h 0.01 – 107
Time of operating mode setting, not more than min 1
Time of continuous hrs 24
Operating supply voltage V ~220(50 Hz)
Power consumption, not more than W 25
Operating temperatures range oС 0 – +40
Dimensions, not more than mm 390х390х175
Weight, not more than kg 19
Ingress protection rating IP23
Environment of the concentrator unit use
– air temperature oС 0 – +40
– relative humidity up to 98 % given +40 oС and lower temperatures, non-condensing
The product provides for the two threshold levels of 0.3 ?Sv/h and 5 ?Sv/h. In case of exceeding, the concentrator unit changes the color of gamma radiation DER display, highlights the transparencies of the established direction towards the radiation source, and triggers audio alarm. If the value of the gamma radiation DER measured by any of the detecting units exceeds 5 ?Sv/h, the concentrator unit lights up “IN ZONE” transparency.

Delivery kit