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iCAM Alpha/Beta Air Monitor

Post Date : February 18
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Automatic self-initialization and operation on power on
Electronic air flow rate measurement, with high and low flow alarms

Removable, card-mounted filters
Automatic self-initialization and operation on power on
Electronic air flow rate measurement, with high and low flow alarms
Continuous total airflow recording and reporting
User-set alarms with local and remote reporting
Simple/automated checks for calibration, gain and spectrum shape
Software package for full iCAM configuration by local computer or via a network
Fault diagnostics show on the local display and across the network
RS-485 and RS-232 communication interfaces
One-week data storage with detailed event log
Data is RS-232 and RS-485 transferable to Microsoft Excel
Thirty minute protection of full functionality by built-in battery backup
Five years protection of configuration memory
Continuous monitoring of both alpha and beta activity in air
Alpha MCA spectroscopy and separate beta discrimination
Good low energy beta detection
Auto-adaptive spectrometric compensation for radon/thoron
Static gamma background compensation with single CAM PIPS detector
Fully compensated activity alarms
Three activity levels for primary alarms
Additional Quick and Long Alarm
Discharge and discharge rates for duct/stack monitoring
Trolley mounted system
Dual CAM PIPS detector version with dynamic gamma compensation
Full-function area gamma alarm monitor capability using the optional G64 detector
I/O expansion option provides RS-422 pulse train outputs (compatible with previous Harwell instruments), and also current loop input, optoelectronic outputs and other I/O
A light and compact integrated unit, which is robust, simple to use and easy to maintain
All the required facilities for alpha and beta monitoring, alarms, data logging, communications and setup
Sensitive detection of alpha and beta particles plus intelligent adaptive algorithms, for fast, accurate alarms, resulting in high levels of protection and low false alarm rates
Adaptive spectrometry algorithms and automated checks for high tolerance to variations in background conditions and extended time between filter changes
Extra alarm facilities for improved management of safety
CANBERRA§s intelligent alpha/beta Continuous Air Monitor (iCAM) provides robust and reliable monitoring of airborne alpha and beta particulate activity in the workplace.
It acts as a simple alarming monitor for operators while measuring airborne activities in real time with the sophistication required to provide low false alarm rates and high protection levels. At the same time it provides automated facilities which assist supervisors to conduct detailed setup and operational overview.

The iCAM measures airborne alpha and beta particulate activity with radon/thoron alpha and beta background compensation. It also provides static or dynamic compensation of beta measurements for gamma background depending on the choice of detector type.

Air is drawn through the instrument by means of an external pump or vacuum system, and airborne particulate material is deposited on the removable card-mounted filter. The filter is monitored by a robust CANBERRA CAMS PIP (passivated ion-implanted planar silicon) radiation detector, which allows simultaneous measurement of both alpha and beta radioactivity in the material deposited on the filter. The air flow is measured directly and reported by the instrument. The design of the airflow system is optimized to ensure high air sampling efficiency and high transmission of particles to the filter. The iCAM has a high detection efficiency for both alpha and beta particles and provides a good sensitivity for low energy beta detection.

Measurement results are presented on the high-visibility graphical display on the instrument§s front panel. User setup and diagnostics are via the local keypad and the graphical display which provide a natural user interface. Results may also be reported via the RS-232 or RS-485 network connections to a local computer or plant surveillance system. Each instrument stores historical data, typically from the previous seven days, which may also be transmitted by network if required. The historical data includes not only activity readings, updated every five minutes in normal operation, but also alarms, filter changes and user interactions. Each event is logged with its date and time.

The iCAM Primary Alarm uses measurements taken over a user selectable interval of typically five minutes, and this data is updated as rolling average every 15 seconds. Alpha, beta and gamma (where applicable) measurement values are each tested against user-set alarm levels. There are three separate sets of three alarm levels, one set of three for each of the alpha, beta and gamma measurement variables. Additional defence against larger emissions of activity in a short time is provided by the Quick Alarm, for which decisions are made on the new data accumulated every 15 seconds.

Finally, iCAM also provides a Long Term Alarm (Chronic Activity Alarm). Here the lowest level alarm may be user-allocated to data accumulated over a long time interval, typically >30 minutes, so that the most sensitive measurements can be achieved. All the alarms are fully compensated for the backgrounds from gamma radiations and from radon/thoron daughter activities.

In addition, any alarms may be indicated locally by visual and audible signals, remotely by relay circuits, or centrally by connection to a suitable monitoring network. Alarm events are also archived.

The iCAM instrument is packaged in a rugged steel enclosure which provides IP42 environmental protection and EMC screening. The front panel carries the local controls and indicators, including the high visibility graphical display, the local keypad and the various indicator lights. The RS-232 connector and the alarm sounder are positioned in the bottom third of the front panel. The air inlet and alarm beacons are mounted on top of the instrument.

When the power supply is switched on, the instrument will perform initialization tests and begin normal operation without any operator intervention. It will begin providing valid measurements within 15 seconds after starting normal operation. It will then update measurements at 15 second intervals, whatever the user-set counting interval.

Air is drawn into the instrument at a preset rate, within the range 15-60 L/min (0.5-2.1 ft3/min), typically about 37 L/min (1.3 ft3/min), and particulate material is deposited on a removable filter card. The instrument may be fitted with an adapter for the attachment of a 25 mm (1 in.) pipe. An airflow regulator valve is provided as an option, and the choice of air outlet position may be adopted from either of two connectors: one on top of and one on the bottom of the instrument. The airflow rate is measured directly on board and its value is used to calculate concentration values and integrated concentration values. Low and high flow alarm values can be set by the user. The total air flow since last reset is recorded and reported.

Company Related ProductsView the Seller's Products
ECAM - Alpha Beta Environmental Continuous Air Monitor

ECAM - Alpha Beta Environmental Continuous Air Monitor

ECAM - Alpha Beta Environmental Continuous Air Monitor

Continuous Air Monitor for Alpha and Beta particulates
Alpha spectroscopy and gross beta counting

Continuous Air Monitor for Alpha and Beta particulates
Alpha spectroscopy and gross beta counting
Optimized for Environmental Air Sampling including windy, outdoor conditions
Built-in cyclone removes large particles (>20 µm aerodynamic diameter) to focus sampling on the respirable fraction of the sample, extends filter life
Uniform sample deposition for more accurate alpha and beta detection
Chronic alarm based on concentration or DAC-hr
Acute release alarm in as little as six seconds
Exponential fit and peak fit background compensation algorithms
Radon compensation lowers false alarms and increases sensitivity
Compensation for temperature and altitude
Optional GPS allows dynamic compensation for altitude up to 15,000 feet
Optional anemometer
Local and remote audio and visual alarm annunciation
RadNet compliant with optional encryption and authentication
Fully functional HTTP server allows for remote monitoring, configuration and calibration
Optional data output format for compatibility with Lawrence Livermore National Laboratory (LLNL HOTSPOT) plume modeling code
The ECAM is designed to provide radiological assessments of potential environmental hazards to personnel and members of the public in the event of the release of alpha-emitting radionuclides. ECAM technology allows real-time field monitoring of concentration, DAC-hr and other parameters for determining potential exposure and improving protection of workers, the public, and the environment.

The unit is encapsulated in a durable, weatherproof assembly engineered to survive in various environmental conditions. It houses a vacuum blower capable of pulling 2 CFM, and can be utilized with customer air handling systems up to 120 L/min (>4 CFM) through a filter sample for large air volume data analysis by the ECAM module. Air is drawn into the inlets at the top of the system and passes through a specially-designed miniature cyclone chamber so that debris and large dust particles are forced out of the air stream as it circulates down into the central portion of the instrument where the CAM head is located.

A 1700 mm2 PIPS® detector positioned over the sample filter detects alpha and beta emissions from the sample. Built-in preamplifier and MCA electronics collect alpha and beta spectral data for analysis. Alpha spectrums collected for analysis and Radon compensation are also used to compensate the gross Beta count. Accurate flow data are collected using a patented mass flow meter. The addition of a new 2048-channel Digital Signal Processing (DSP) MCA has expanded the functionality of the ECAM to include compensated gross Beta counting and enhanced Alpha spectroscopy and Radon compensation.

MCA data and sample volume data, as well as instrument status data, are made available for analysis. Data processing for alarm functionality and a graphical user interface are supported by an embedded Pentium®-class single board computer in the ECAM module. A sophisticated background compensation algorithm removes background radon interference to reduce possible false alarms and increase sensitivity.

In addition to performing data analysis, the ECAM module functions as a uniquely-designed web server. This allows easy access to all configuration parameters and provides a convenient method for monitoring throughout an entire local area network via a web browser. A multilevel user security system has been implemented to ensure privacy and prevent accidental misconfigurations by unqualified technicians.

U.S. Federal entities choosing to incorporate their surveillance, monitoring and detection systems into a wireless network must first address the issue of FIPS compliance. To meet this demand, the ECAM module can be bundled with a FIPS 140-2 compliant cryptographic module to provide encryption and enhanced authentication.


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CAM110FF Series Continuous Air Monitors

CAM110FF Series Continuous Air Monitors

CAM110FF Series Continuous Air Monitors

Continuous air monitoring for beta/gamma particulate and iodine
Modular low profile design

Continuous air monitoring for beta/gamma particulate and iodine
Modular low profile design
Real-time data acquisition and control
Excellent linearity and accuracy
Scintillation detector with automatic gain stabilization
Non-volatile historical data
Mass flow control
Optional RADACS integration
Major Assemblies
Fixed filter On-line Sampler with MD Series Scintillation detector and preamplifier
MX9B check source assembly
ADM606M digital/analog multi-function control and display units
Commitment to meet or exceed your quality expectations
The CAM110FF Series offers two options for beta/gamma particulate and iodine in air monitoring: the CAM110IFF for 131I monitoring, or the CAM110PIFF for beta/gamma particulate and iodine monitoring. The collection of particulates and 131I is achieved by the use of a fixed filter.

The system monitors radioactive airborne levels in either working spaces, or via a process tubing connection to a remote stack, duct or other air space. Visual indication and contact outputs for remote alarms are provided for high radiation and failure conditions. Analog outputs are provided to the plant monitoring system. The CAM110 Series CAMs can be set for isokinetic monitoring if desired.

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