Digital Wall-M ount Gamma Area Monitor
Features
• Easy Setup and Use
• Internally Mounted, Energy Compensated GM Detector
• Operating Range: 1 ìSv/h to 10 mSv/h (1.0 mR/hr to 1 R/hr)
• User-Programmable Alarms
• User-Programmable Units of Measurement
• Audio and Visual Alarms
• Networkable
• 48-Hour Battery Backup
Introduction
The Digital Wall-Mount Area Monitor is designed for visibility and ease of use. This popular and versatile
instrument has an internally housed energy compensated GM detector with a range from 1 μSv/h to
10 mSv/h (0.1 mR/hr to 1 R/hr). Different versions of the instrument are available with connectors for an external detector instead. Other features are a wall-mount chassis and a four-digit LED display that is readable from 9 meters (30 feet) away. Backlit indicators provide easy notifcation of alarms, warnings, and instrument status. Audible tones provide additional alerts.
Parameters are protected under a calibration cover. Calibration is easily accomplished by moving the CAL
dipswitch to the right, and using the pushbuttons to increment or decrement the calibration constant, dead
time correction, and alarm point parameters. Parameters are stored in non-volatile memory (retained
even with power disconnected). A five-decade logarithmic analog output is provided. The battery
backup provides 48 hours of additional use after the primary power is removed .
Optional Environmental Enclosure
Controller : NEMA 4 Weatherproof Enclosure with seethrough front window
Specifcations
INDICATED USE: gamma monitoring
DISPLAY: 4-digit LED display with 2 cm (0.8 in.) character height
DISPLAY RANGE: 000.0 to 9999 (Series One: 00.00 to 9999)
OPERATING RANGE: 1 ìSv/h to 10 mSv/h (0.1 mR/hr to 1 R/hr); external detectors will have different ranges
DISPLAY UNITS: can be made to display in ìR/hr, mR/hr, R/hr, ìSv/h, mSv/h, Sv/h, ìrem/hr, mrem/hr, rem/hr, cpm, cps, and others
LINEARITY: readings within 10% of true value with detector connected
RESPONSE: typically 3 seconds from 10% to 90% of fnal reading
INDICATORS:
STATUS: (green light) instrument functioning properly
LOW ALARM: (yellow light and slow [1 per second] beep) can be set at any point from 0.0 to 9999
HIGH ALARM: (red light and fast [4 per second] beep) can be set at any point from 0.0 to 9999
DET FAIL: (red light and audible tone) for conditions of detector overload, no count from detector, or instrument failure
LOW BAT: (yellow light) indicates less than 2 hours of battery power remaining
OVERLOAD: display reading of -OL- and audible FAIL alarm indicate detector saturation
OVER-RANGE: display reading of “----” and activated low and high alarms indicate that the radiation feld being measured has exceeded the counting range of the instrument (or when dead time correction accounts for more than 75% of the displayed reading)
REMOTE (optional): allows for connection of remote units
ETHERNET (optional): 10 Base-T connection for use with LMI Ethernet (PN 4558-098) or Webpage (PN 4558-105) software
CALIBRATION CONTROLS: accessible from the front of instrument (protective cover provided)
HIGH VOLTAGE: user-adjustable from 450 to 2500 volts
DEAD TIME: user-adjustable to compensate for dead time of the detector and electronics (can be read off the display)
AUDIO: can vary from approximately 68 dB to 100 dB through operation of the external rotary baffe and the internal voltage connection
RS-232 OUTPUT: a 2-second dump for computer data logging
POWER: 9 Vdc wall-mount adapter with four sets of prongs for almost any style wall receptacle
BATTERY LIFE: typically 48 hours in non-alarm condition; 12 hours in alarm condition
BATTERY CHARGER: battery is continuously trickle charged when the instrument is connected to line power and turned on
CONSTRUCTION: aluminum housing with ivory powder-coat fnish
TEMPERATURE RANGE: -15 to 50 °C (5 to 122 °F); may be certifed for operation from -40 to 65 °C (-40 to 150 °F)
SIZE: 18.7 x 24.6 x 6.4 cm (7.4 x 9.7 x 2.5 in.) (H x W x D)
WEIGHT: 2.1 kg (4.7 lb)
Options
Environmental Enclosure: NEMA 4 Weatherproof Enclosure
Date/Time Printer with Cable (pictured)
Industrial Camera Option: High Speed IP Video, 1280 x 1024 Resolution (pictured)
Optional Indoor/Outdoor Camera Housing
Area Monitor, Remote Display/Annunciator
Area Monitor, Remote Display/Annunciator
Ethernet Software for up to 50 Ethernet-enabled
Webpage & Service Software:
Ethernet Port Option
Litestak Assembly Signal Enclosure
375 Ethernet Option for 2010 and later
4-20 mA Modifcation
Horn, Strobe, Relay, & Cable, 100 V
Horn, Strobe, Relay, & Cable, 220 V
Strobe, 110 V (pictured)
Strobe, 220 V (pictured)
Horn & Relay, 110 V
Horn & Relay, 220 V
