AMRA-Ge® NG, (New Generation)
Automatic Monitor of Radioactive Aerosols:
AMRA-Ge® NG stands at the top of the AMRA® series, surpassing its predecessor, the AMRA-Sr® Aerosols Monitor.
Distinguishing itself with an electrically cooled High Purity Germanium (HPGe) detector, AMRA-Ge® NG achieves unparalleled performance in the realm of aerosol monitoring.
Both AMRA-Sr® and AMRA-Ge® NG exemplify state-of-the-art design solutions and superior performance, seamlessly integrating Alpha/Beta and Gamma spectrometric measurement chains within a standard 19” framework.
While the architecture and Alpha/Beta aerosol monitoring section mirror that of AMRA-Sr®, the key distinction lies in the superior capabilities of AMRA-Ge® NG in Gamma aerosols monitoring.
The Gamma aerosols analysis of AMRA-Ge® NG relies on an integrated high-performance
spectrometric chain, featuring an electrically cooled 30% efficiency HPGe detector and a digital 16k Multi-Channel Analyzer (MCA), as elaborated below: - Fully electrically cooled HPGe detector with a remarkable 30% efficiency.
- The inclusion of a cutting-edge State of Health Preamplifier (SHP) enables real-time monitoring of the detector's status.
- Embedded within the detection assembly is a K-40 reference source, facilitating automatic conversion gain stabilization.
- A digital MCA with an impressive 16k channels enhances precision in spectrometric measurements.
- Mechanical compatibility with AMRA-Sr® ensures seamless upgradability, at any given time, an AMRA-Sr® can be elevated to AMRA-Ge® NG status by installing the HPGe detection unit and related MCA, replacing the scintillation detector-based measuring chain.
- The AMRA-Sr® firmware comes pre-equipped, and a simple configuration file allows for the effortless selection of the desired setup.
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 (hh:mm)
- 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
Main operational functions:
- Filter control (Δp, air inlet temperature, 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
- Two programmable thresholds (alert and alarm)
- Intrinsic automatic control of system operation
- Built in test procedures
- Data communication LAN, 4G/LTE, option Satellite, 5G
- GUI languages: English standard, Spanish selectable, Russian option
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)
- Dp (mbar - pressure drop through the filter)
- Airinlet temperature (°C )
- Measuring time (h, min)
- Sampling time (h, min)
Status Information:
- Failure: description / code of failure if any
Measurement data:
- Alpha artificial concentration (Bq/m3) ± statistical uncertainty
- Beta artificial concentration (Bq/m3) ± statistical uncertainty
- Alpha alert threshold (Bq/m3)
- Beta threshold (Bq/m3)
- Visual alert and/or alarm for Alpha thresholds
- Beta alert threshold (Bq/m3)
- Beta alarm threshold (Bq/m3)
- Visual alert and/or alarm for Beta thresholds
- Alpha Total (Bq) ± statistical uncertainty
- Beta Total (Bq) ± statistical uncertainty
- Radon concentration (Bq/m3) ± statistical uncertainty
- Thoron concentration (Bq/m3) ± statistical uncertainty
- Full Alpha / Beta spectra (1k)
- ROI Gamma concentration (Bq/m3) ± statistical uncertainty (10 ROI)
- ROI Gamma activity on filter (Bq) ± statistical uncertainty (10 ROI)
- Full Gamma spectra (16k)
- Data format selectable: ANSI 42.42 / EURDEP 2.1 / IRIX
