AM-801 Radiation Portal Monitor

Walk-thru Personnel Survey for Gamma Radiation

am-801 touch screen user interface

Collapsible and Portable

This portal monitor features a full color VGA touch screen. Plastic scintillation detectors cover four quadrants of the human body. The AM-801 was designed specifically to detect gamma radiation, but some higher energy beta radiation is detectable. The alarm rate is adjustable;  the portal monitor will detect a Cs-137 source as low as one microCurie. The electronics are all digital, microprocessor controlled. This portal monitor fits into a hard case; the entire package weighs approximately 100 lbs. The case is easily moved via casters and handle. The portal monitor is assembled without tools in less than ten minutes. This device is user-friendly and requires minimal training. The user has the option of an AC or DC power source. A quick response time of 100 milli seconds allows 500 persons to be processed per hour. An optional vehicle monitor kit is available for this portal monitor. The AM-801 Personnel Radiation Monitor was rated First in Portal Monitors in an NUSTL Report for the DHS.

AM-801 Portal Monitor Specifications

AM-801 portable monitor display close-up

General: Radiation detection for personnel / pedestrians
Setup: No tools required, approximately ten minutes
Display: Full color VGA, Touch sensitive screen. Full color graphics indicate: Normal operation, Errors, and Alarms. All operating parameters: Detector CPS, High Voltage, Set points available on operator screen.
Sensitivity:  Meets FEMA sensitivity requirements of less than 1 uCi Cs-137 source during walk through
Processing Rate: Approximately 500 persons per hour
Detectors: Four Plastic Scintillation detectors, 36” L x 3” W x 1.5” D, placed in four quadrants of the body. Other detector configurations are available.
Scintillators: PMT Detectors,  162 cubic inches, each detector is 648 cubic inches
Operating modes and data entry: Walk/Drive-through or timed count. System constantly measures background and automatically subtracts from each measurement.
WB Johnson AM-801 Monitor OverviewAudible commands and alarms: System is pre-programmed with appropriate commands to coincide with operations (i.e. Wait, System not Ready, Ready, Too Fast, See Operator). Commands can be configured.
Person and/or Vehicle Sensor and Counter: Optical sensors automatically sense person or vehicle from entering counting area. Counter automatically counts number of persons or vehicles per day, shift, etc and saves count and time/date of vehicles exceeding alarm set points.
Range: 0-100,000 CPS
Printer/PC Output: RS-232, 9 PIN Connector
Relay Output: Optional dry contact can be configured to operate within alarm set points. Display graphics indicate alarm by changing color of parameter that is alarming.
Diagnostics: HV Out of Range, Battery Low, Detector out of Range, Incomplete Count, Background Fault
Range Adjustment: Auto-ranging system automatically and continuously measures background until vehicle sensor starts analyzer program.
Response Time: 100 milliseconds
Drift: LESS THAN 5%
High Voltage: 300 vdc — 1500 vdc ±1% Regulation
Environmental: -4°F (-20° C) 140°F (60° C),  5-95% RH
Dimensions: Inside portal: 72” High  X 36”Width, Outside Portal: 84” High X 42” Width
Power: 120 –250 VAC and backup of "D" size alkaline batteries, 8 hours nominal operation
Weight: Portal Monitor weighs 75 lbs
Construction: Aluminum and Stainless Steel
Vehicle Monitoring Kit: Includes all materials and shipping case necessary to separate detectors a maximum of ten feet.

AM-801 User Manual

Feel free to contact us for questions and pricing.

.AM-801 Radiation Portal Monitor for Vehicles


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