Vehicle Radiation Monitors (AT2327 Alarm Dosimeter)

Vehicle Radiation Monitors (AT2327 Alarm Dosimeter)

Detection of gamma and neutron radiation sources in vehicles crossing access control points.
 

  • Modular system design
  • Automatic adjustment of set threshold levels according to changes in natural radiation background
  • High reliability and self-check function
  • Backup power source
  • Automatic data logging
  • Optional CCTV connectivity

Applications

Industry

Homeland Security

Detection time per one vehicle
≤20 s
False alarm rate
≤1 per 1000 crossings
Continuous battery operation time
≥6 h
Protection class
IР65
Overall dimensions, weight
depending on configuration
 
Gamma radiation detection unit (DU)
BDKG-19
BDKG-35
BDRM-05
Scintillation detector
NaI(Tl) Ø63x160 mm
Plastic Ø70х150 mm
Plastic 1000х100х50 mm
Energy range
50 keV – 3 MeV
20 keV – 3 MeV
50 keV – 3 MeV
Typical sensitivity, cps/(µSv·h-1)
32500 (241Am)
4900 (137Cs)
2800 (60Co)
10000 (241Am)
3200 (137Cs)
1600 (60Co)
60000 (241Am)
31500 (137Cs)
15000 (60Co)
Minimal detectable gamma radiation dose rate level above background value 0.1 µSv/h in a period not longer than 2 s
0.03 µSv/h
0.04 µSv/h
0.01 µSv/h
 
Neutron radiation detection unit (DU)
BDKN-05
Detector
Two He-3 proportional counters in polyethylene moderator
Energy range
0.025 eV – 14 MeV
Typical sensitivity to source radiation at the distance of 1 m, cps/(neutron·s-1·cm-2)
20 [252Cf]
 
Detection threshold for unshielded source
under natural radiation background conditions not more than 0.1 µSv/h
(Probability of source detection 80% under confidence level Р=0.95)
Road vehicles. Travel speed 8 km/h
 
DU configuration (location and number)
BDKG-19
BDKG-35
BDRM-05
BDRM-05
Control zone
width – 3 m,
height – 2 m

1100 kBq [241Am]
470 kBq [137Cs]
220 kBq [60Co]
2850 kBq [241Am]
550 kBq [137Cs]
230 kBq [60Co]
1800 kBq [241Am]
280 kBq [137Cs]
120 kBq [60Co]
4.1·104 neutron/s [252Cf]

770 kBq [241Am]
320 kBq [137Cs]
160 kBq [60Co]
1940 kBq [241Am]
370 kBq [137Cs]
150 kBq [60Co]
1200 kBq [241Am]
160 kBq [137Cs]
90 kBq [60Co]
2.5·104 neutron/s [252Cf]
Control zone
width – 6 m,
height – 4.5 m

2700 kBq [241Am]
1190 kBq [137Cs]
540 kBq [60Co]
6900 kBq [241Am]
1350 kBq [137Cs]
550 kBq [60Co]
4400 kBq [241Am]
550 kBq [137Cs]
270 kBq [60Co]
4.4·104 neutron/s [252Cf]

1860 kBq [241Am]
800 kBq [137Cs]
370 kBq [60Co]
4950 kBq [241Am]
890 kBq [137Cs]
370 kBq [60Co]
3000 kBq [241Am]
400 kBq [137Cs]
200 kBq [60Co]
2.6·104 neutron/s [252Cf]
Railway vehicles. Travel speed 20 km/h
 
DU configuration (location and number)
BDKG-19
BDKG-35
BDRM-05
BDRM-05
Control zone
width – 6 m,
height – 4.5 m

–
–
6900 kBq [241Am]
880 kBq [137Cs]
470 kBq [60Co]
8.0·104 neutron/s [252Cf]

–
–
5200 kBq [241Am]
650 kBq [137Cs]
310 kBq [60Co]
4.9·104 neutron/s [252Cf]

Design and specifications are subject to change.

For details see our datasheet.

Specifications

Passage width / height:
6 m / 4 m

Detection units:
- Gamma radiation:
BDKG-19, BDKG-35, BDRM-05
- Neutron radiation:
BDKN-05

Energy range:
- Gamma radiation:
50 keV – 3 MeV
20 keV – 3 MeV (BDKG-35)
- Neutron radiation:
0.025 eV – 14 MeV

Detector:
Scintillation, NaI(Tl) Ø63x160 mm (BDKG-19)
Scintillation plastic, Ø70x150 mm (BDKG-35)
Scintillation plastic, 1000х100х50 mm (BDRM-05)
Two He-3 proportional counters in polyethylene moderator (BDKN-05)

Typical sensitivity to 137Cs gamma radiation:
4430 cps/(µSv·h-1) (BDKG-19)
3200 cps/(µSv·h-1) (BDKG-35)
30000 cps/(µSv·h-1) (BDRM-05)

Typical sensitivity to 252Cf neutron radiation:
20 cps/(neutron·s-1·cm-2) (BDKN-05)

Fast 2-second response when background level is exceeded for:
0.03 µSv/h (BDKG-19)
0.04 µSv/h (BDKG-35)
0.01 µSv/h (BDRM-05)

False response rate:
≤1 per 1000 crossings

Design and specifications are subject to change.

For details see our datasheet.

PDF icon Datasheet AT2327 (Vehicle Radiation Monitors)

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