Flexible and reliable multichannel stationary radiation monitoring system to perform environmental and area radiation monitoring of radiation-sensitive rooms and targets
Features
| - Gamma and neutron radiation smart probes |
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| - Independent measuring in each channel within wide gamma and neutron radiation dose rate and neutron radiation flux desnity ranges |
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| - Audible and visual alam at threshold exceeding for each smart probe |
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| - High reliability |
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| - Failure diagnostics |
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| - Database of dose rate values and alarm threshold excesses |
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| - Applied software to display current radiation environment in real time |
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| - Backup power unit |
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| - Mobile one-channel design |
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Application
| - Nuclear industry |
| - Radiology |
| - Industry |
| - Radioisotope and dosimetry laboratories |
| - Civil defense |
The alarm dosimeter consists of gamma radiation smart probes (AT2343, BDKG-02, BDKG-08) and neutron radiation smart probes (BDKN-02, BDKN-04) (SP). The smart probes are completely independent instruments measuring gamma and neutron radiation dose rate and neutron radiation flux density every 2 s and triggering audible and visual alarm. One or several audible and visual alarm units (AU) may be connected to each smart probe to notify the staff in the case of radiation hazard. Data from smart probes are transferred to the processing unit via RS-485.
The processing unit displays measured values of the selected smart probe and real time. Alarm threshold exceeding or a failure of any system units is accompanied by audible and visual signals showing symbolically the problem location on the display. The processing unit is intended to setup thresholds for each smart probe, monitor smart probe state, correct the real-time clock, protect several service functions with a password, review dose rate and threshold exceeding history of any smart probe.
When PC is used as a part of a radiation monitoring system, applied software running under Windows 2000 is intended to configure the system, read out readings and process them.
The map of the monitoring area or target and dose rate values as charts and tables in measuring posts are displayed on PC. Alarm threshold exceeding in any smart probe or failure of any system units are displayed on PC as color zones and accompanied by audible alarm. Measured dose rate values in measuring post are stored in a database (Microsoft Access-2000).
Specification
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| Number of smart probes in one alarm dosimeter |
from 1 to 10 |
| Number of alarm dosimeters in one radiation monitoring system connected to PC |
32 |
| Ambient dose equivalent rate measuirng range |
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| gamma radiation |
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| BDKG-02 |
0.1 µSv/h - 10 µSv/h |
| BDKG-08 |
0.1 µSv/h - 5 Sv/h |
| АТ2343 |
25 nGy/h - 10 Gy/h |
| neutron radiaiton |
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| BDKN-04 |
0.1 µSv/h - 10 mSv/h |
| Neutron radiation flux density measuring range |
0.1 - 104 neutron/(cm2·s) |
| Sensitivity on 137Cs |
15000 count/µSv |
| Gamma radiation energy range |
0.05-3 MeV |
| Detecting neutron radiation measuring range |
0.025 eV - 14 MeV |
| Intrinsic measurement error |
± 15 % |
| Operating temperature range |
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| smart probes |
-30 - +50°С |
| other units |
+5 - +40°С |
| Interface (cable communication) |
RS 485 |
| 3-level audible and visual alarm |
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| Maximum distance between a smart probe and the processing unit (cable communication) |
1000 m |
| Protection class |
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| smart probes |
IP57 |
| other units |
IP54 |
| Radio disturbance |
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| CEI/IEC CISPR 22:1997 |
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| Electromagnetic compatibility |
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| CEI/IEC 61000-4-2:1995 |
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| IEC 61000-4-3:1995 |
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| Power requirements |
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| AC mains |
220 (+22;-33)V, 50±2 Hz |
| Accumulator battery at emergency |
12.6 (+1.3; -1.6) V or 25.2 (+2.6; - 3.2) V |
Complete set: processing unit, smart probes AT2343, BDKG-02, BDKG-08, BDKN-02, BDKN-04, alarm units, terminal-block boxes, AC adapters, Manual, set of assembly parts and accessories.
Backup power unit, applied software, PC and interface adapter are options and they are supplied on additional order.
The alarm dosimeter AT2327 has pattern approval certificates of Republic of Belarus, Russian Federation, Ukraine and Kazakhstan.
It complies with IEC 61017-7 International standard requiremnts. It also confoms with the 89/336/EEC Directive complying with EN 61000-6-3, EN 61000-6-2, EN 50371 and EN 61010-1 standard requirements.
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