Neutron radiation detector BDN performs the following functions: measurement of DER of neutron radiation in collimated radiation by Pu- α -Be, search and registration of neutron radiation sources.
BDN can be used by radiological and isotope tracing laboratories, customs officers, emergency services to search and detect neutron radiation sources and to continuously monitor radiation environment.
Operation Principle
BDN 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. BDN 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.
Spectroscopic Radiation Monitor PM1403 Operating Mode
When the instrument is connected to the Spectroscopic Radiation Monitor РМ1403 / Display and Control Unit РМ1403 / Display and Control Unit РМ1403-01 or PC it enables:
- indication of the measured neutron radiation DER value and indication of relative mean square error of average measurement result with 0.95 probability (statistical error) in %
- indication of average count rate and measured DER value of neutron radiation when using BDN in the search mode
- programming of the BDN 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
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Detector
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He-3 | ||||
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Dose equivalent rate (DER) measurement range
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from 1.0 to 5000 μSv/h (by Pu-α-Be source in collimated radiation) | ||||
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DER measurement accuracy
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± (30+K/Ḣ)%, where Ḣ – DER value, μSv/h; К – coefficient = 10.0 μSv/h | ||||
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Energy range
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from thermal neutrons to 14 MeV | ||||
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Thresholds
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from 1.0 to 5000 μSv/h | ||||
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Alarm Type
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visual, audible | ||||
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Drop test on concrete floor
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0.7 m | ||||
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Ingress protection
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IP65 | ||||
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Power supply
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3.6 (minus 0.6; +0.7) V | ||||
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Weight
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0.7 kg | ||||
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Operating temperature
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from -20 to +50 °С | ||||
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Atmospheric pressure
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from 84 to 106.7 kPa | ||||
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Dimensions
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230 x 63 mm | ||||
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Humidity
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up to 95 % at 35 °С | ||||
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Mean service lifetime
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10 years | ||||
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Count rate indication range in the search mode
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from 1 to 4000 s-1 | ||||
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Data exchange
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USB or RS-485 interface | ||||
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Instrument sensitivity
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Mean recovery time
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60 min | ||||
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Mean time between failures
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20000 h |