Applications And General Information - SARAD Aer 5400 Manual

Aer 5400

1. Applications and general information

The online continuous air sampler Aer 5400 allows the measurement of the exposure of workers and
first responders with respect to radioactive aerosols. Typical application fields are nuclear facilities,
the NORM industry, mines and nuclear medicine (e.g. DIN ISO 16639 / VDE 0493-1-6639).
The instrument comes with an IP65 protected stainless steel enclosure with plain surfaces which can
be easily de-contaminated. The unit can be mounted either at a wall or on a trolley.
The air inlet (KF/DN16 vacuum flange) is placed on the top of the unit. Particle losses at the inlet
become negligible by the special construction. An electric valve regulates the flow rate automatically
and ensures a uniform and low-loss deposition of the aerosols on the filter surface. This solution
allows the user to connect the unit either to a pump or a central vacuum supply. In this case, the
central vacuum supply should be able to generate a pressure difference of 400 mbar at the desired
flow rate, which is 35 l/min per instrument as a standard.
The unit measures long lived radioactive dust (LLRD) as well as natural occurring Radon daughter
products. Both values are presented separately. The influence of Radon daughters is dynamically
compensated for LLRD detection. Following results are achieved from the acquired energy spectrum
•
Alpha exposure, dose and average concentration for LLRD
•
Beta exposure, dose and average concentration for LLRD
•
Equilibrium equivalent concentration for Radon (Rn-222) daughters
•
Equilibrium equivalent concentration for Thoron (Rn-220) daughters
If any of the user-adjustable thresholds is exceeded, audible and optical alerts are generated. Special
attention has been paid on quality assurance. Air flow and filter status are logged in parallel with the
radiation results. A complete energy spectrum is saved for each single sampling interval. The unit is
equipped either with a manually replaceable filter or with an automatic filter stepper drive resulting
in high reliability and low effort for maintenance.
The instrument offers various measurement cycles to fit for several applications. The configuration
and operation software package dCONFIG/dVISION will be delivered with the unit.
4 Manual_Aer 5400_EN_27-04-2023.docx
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