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AT930
Pedestrian radiation monitor

Application

​​Detection in continuous automatic mode of gamma radiation sources in the flow of pedestrians crossing the border of the protected object and facilities.

Radiation control in pedestrian traffic:
  - in airports, bus terminals, railway and underground
  - in public places and organisations
  - at access checkpoints on nuclear industry objects

  - at border and customs checkpoints

Features

  • Fast adaptation to changing radiation background

  • Sound and light alarm when gamma radiation is detected

  • Self-check of components during operation

  • Mobility and the possibility of forming gates

  • Continuous and occasional radiation monitoring

  • Powered by 220V mains or built-in rechargeable battery

Upper part
Upper part

AT930 Pedestrian radiation monitor

Lower part
Lower part

AT930 Pedestrian radiation monitor

View
View

AT930 Pedestrian radiation monitor

Specification

Detector

Scintillation plastic
1000х100х50 mm

Registered radiation

Gamma

Typical sensitivity to gamma radiation

Am-241 60000 cps·h/μSv
Cs-137 31000 cps·h/μSv
Co-60 16500 cps·h/μSv

Energy range

60 keV – 3 MeV

Detection threshold for unshielded source at 1 m height
under natural radiation background conditions not more than 0.1 μSv/h
(Distance to source 1 m, source travel speed 5 km/h, probability
of source detection 80 % under confidence level Р=0.95)

Am-241 530 kBq
Cs-137 70 kBq
Co-60 35 kBq
Tc-99m 180 kBq
Ba-133 75 kBq
I-131 50 kBq

Minimum detectable amount of radioactive materials at 1 m height
under natural radiation background conditions not more than 0.1 μSv/h
(Distance to source 1 m, source travel speed 5 km/h, probability
of source detection 95% under confidence level Р=0.95)

U-235 15 g
Pu-239 1.2 g

Initialization time

≤5 min

Alarm

Sound and light

False alarm rate

≤1 per 1000 passings

Protection class

IР54

PC interface

RS-485

Operation temperature range
Relative air humidity

-30°С to +50°С
Up to 95% (non-condensing, ≤+35°С)

Power supply options


230 VAC 50 Hz mains
Backup rechargeable battery

Overall dimensions

1610x450x300 mm when anchored to the floor
(An additional base of 930х760 mm size is included
into the delivery set for operation without anchoring)

Weight

70 kg
(83 kg with additional base)

The monitor complies with:

IEC 62244:2006, Safety requirements of IEC 61010-1:2010, EMC requirements of EN 55011:2009,
IEC 61000-4-2:2008, IEC 61000-4-3:2008, IEC 61000-4-4:2004, IEC 61000-4-5:2005,
IEC 61000-4-6:2008, IEC 61000-4-8:2009, IEC 61000-4-11:2004

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