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AMRA-Sr® Alpha/Beta/Gamma Automatic Monitor for Radioactive Aerosols
with high performance scintillation detector assembly and automatic filter changer

AMRA-SR® Alpha/Beta/Gamma Automatic Monitor

for Radioactive Aerosols with high performance scintillation detector assembly and automatic filter changer

AMRA-Sr® is the State of the Art among Aerosols Monitors, in terms of advanced design solutions and performances of the Alpha/Beta and Gamma spectrometric measurement chains. It is a budget friendly alternative to its higher performance

version AMRA-Ge® equipped with electrically cooled HPGe detector.

Thanks to the superior characteristics of its detector, the Gamma MCA is set-up for 4k channels, twice the number of

channels normally usable with less performing scintillation detectors.

The innovative unique use of a SrI2(Eu) crystal with its very low intrinsic background and very high photonic yield makes possible at a reasonable cost the implementation of an industrial grade equipment with laboratory grade analytical performances on-line.

Technical highlights

Main operational functions

 

  • Automatic filters changing

  • Flow-rate control and measurement

  • Live spectrum acquisition

  • On-line Spectra analysis and readout

  • Gamma background compensation

  • Evaluation of activities on filter and concentrations in air

  • System parameters set-up

  • Programmable thresholds (alert and alarm) for radiological events on each measurement chain (Alpha, Beta and Gamma emitters)

  • Built in test procedures

  • Full remote control

  • Data communication

Parameters set-up

  • Station identifier: identifier of the station

  • Sampling Flow Rate: sampling flow-rate (X.XX m3/h)

  • Sampling Time: total sampling time (ST) for each filter (in hours and minutes) 

  • Data period: data files issuing period

  • Alpha Alert Threshold: alert trip point for alpha concentration   

  • Beta Alert Threshold: alert trip point for beta concentration     

  • Alpha Alarm Threshold: alarm trip point for alpha concentration 

  • Beta Alarm Threshold : alarm trip point for beta concentration   

  • Gamma ROI Alert Thr.: ten ROI independent trip point set-up

  • Gamma ROI Alarm Thr.: ten ROI independent trip point set-up

  • Flow Alarm Threshold: flow-rate trip point for ‘low flow’ alarm (X.XX m3/h).

  • Flow Filter Threshold: flow-rate trip point for filter change (X.XX m3/h).

  • MCAs set-up: coarse gain, fine gain, shaping, threshold, HV

  • Network: IP address, firewall, time synchronization 

Data Display

Programmed Parameters:

  • Flow-rate (m3/h)

  • Sampling time (h, min)

  • Data period (min)

  • Measuring time (h, min)

Actual values:

  • Flow-rate (m3/h)

  • Normalized Flow-rate (m3/h) @ 25°C

  • Filter (actual filter number)

  • Measurement (actual measurement number)

  • Step (actual step number)

  • Sampled volume (m3)

  • Normalized volume (m3)

  • pressure (mbar - pressure drop through the filter)

  • Air inlet temperature (°C )

  • Measuring time (h, min)

  • Sampling time (h, min)

Status Information:

  • Failure: description/code of failure if any

       Measurement data 

 

  • artificial concentration (Bq/m3)  statistical uncertainty

  • artificial concentration (Bq/m3)  statistical uncertainty

  • alert threshold (Bq/m3)

  • alarm threshold (Bq/m3)

  • visual alert and/or alarm for   thresholds 

  • alert threshold (Bq/m3)

  • alarm threshold (Bq/m3)

  • visual alert and/or alarm for  thresholds 

  • Total (Bq)  statistical uncertainty

  • Total (Bq)  statistical uncertainty

  • Radon concentration (Bq/m3)  statistical uncertainty

  • Thoron concentration (Bq/m3)  statistical uncertainty

  • Full α / β spectra (1k)

  • ROI gamma concentration (Bq/m3)  statistical uncertainty (10 ROI)

  • ROI gamma activity on filter (Bq)  statistical uncertainty (10 ROI)

  • Full gamma spectra (4k)

  • Data format ANSI 42.42 or optionally other formats upon request