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BAB - air monitoring beacon

The BAB air monitoring beacon provides continuous measurement and monitoring of atmospheric contamination from radioactive α & β artificial aerosols, including compensation of radon progenies and ambient gamma radiation.

Can be used in nuclear industry, dismantling and purification sites as radiation protection for workers and environmental protection. Available as stationary or mobile version.

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The radioactive dust is deposited by air suction on a filter paper placed in the BAB beacons. The suction flow rate is about 5 m3/h (it depends on dustiness and type of filter paper). The flow rate is calculated from the depression measured between the filter and the pump. This allows to detect any tear or dust clogging.

Placed one centimeter above the sample, the detection system is based on two 300 μm thick silicon diodes with a surface of 360 mm2. The analog signal from the two diodes is amplified by a preamplifier with an output range of about 30mV/MeV. An amplifier increases the signal amplitude to 0.7V/MeV, and the signal is then used to produce the energy spectrum via an amplitude analyzer that encodes information to 512 channels.

Detector head lead shielded for use in high gamma background.

Can be connected to a central monitoring network and trigger a general alarm (Wireless data link, ShortLINK or SkyLINK radio).

GJNOV software for local maintenance and data acquisition

 

The BAB air monitoring beacons are available in two different versions:

• BAB-A7 version is specially designed for work station monitoring during maintenance operations or in dismantling work sites, where man-made noise immunity is highly recommended. BAB-A7 is available for stationary or mobile use.

• BAB-E exists as stationary version for outside use, and will be typically used for surveillance around nuclear facilities or for national monitoring.

Radiation type

Alfa and Beta

Detector type

Large area dual silicon diode, 2 x 360 mm²

Energy range

Alfa: 2 to 10 MeV

Beta: 80 keV to 2 MeV,

adjustable artificial Alfa ROI (adjustable in factory on request)

Temperature range

+5°C to +45°C

Compliance with CEM norms

• EMI emission: EN 61000-6-4

• EMI immunity: EN 61000-4-3, Level 3

Beta measuring range

10^-2 to 5 10^4 Bq/m³

Alfa measuring range

10^-3 to 5 10^4 Bq/m³

Display units

Bq/m³, µGy/h

Sampling volume

6 m³/h

Filter

FSLW MERCK/MILLIPORE type roller

Width 40mm, height 20m

Compensation

Automatic ambient gamma background compensation and Radon progenies

Variant

Internal shielding for use in high gamma background level

Alarms

Acoustic and optic signals with two adjustable tresholds for type of radiation Alfa or Beta

Type of battery dimensions

460 x 630 x 260 mm

Type of battery

Sector: 230V – 50Hz single phase

Switch box power 60VA

Pump power 580VA, peak current 13A

Weight

46 kg

Display

• Large dimension LCD screen

• TFT 5.6″ 320xRGBx234 stripe 32k

Memorization

92h for graphs and 21 days for measurements

Ethernet can be used to store measurement data remotely

Data format

JBUS Modbus protocol

Hermeticity

IP50

Communication

2 x RS485, RJ45

Options

External gamma probe

ShortLINK or SkyLINK (wireless radio communication)

GJNOV software for local maintenance and data acquisition

VD/VR communication (CEA)

 

TitleDescriptionFilename
BAB datasheet  Brochure_BAB_A4_EN_2022_web.pdf 
TitleDescriptionUrl
Environmental radiation monitor   
BAB - air monitoring beacon
Artificial aerosols monitor
BAB - air monitoring beacon
Radioactive aerosols monitor
 
 
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