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Digital Entrance/Exit Area Monitor
Digital Entrance/Exit Area Monitor
| Overview | Features | Specifications | Models and Ordering Information |
This Area Monitor serves as a radiation sentry/alert for building entrances, halls, and doorways. Equipped with a pair of NaI (Tl) scintillation detectors that mount on both sides of a doorway or hall, the unit continuously monitors incoming and outgoing materials and people for low-level gamma radiation. Typical applications are the monitoring of areas where waste material leaves departments or buildings, and monitoring emergency room entrances in the event of radiation-related emergencies. The Area Monitor can be set to give a visual and/or audible alert (yellow light, slow beep) when a selected background level has been exceeded, and give an alarm signal (red light, fast beep) when a selected radiation level is reached. Lights and audibles also indicate detector overload, no count from detectors, or instrument failure. A yellow LED illuminates when the battery has less than 2 hours of power remaining. The monitor is wall-mountable. Two 25-foot detector connection cables are included.
For facility entrances, waste management areas, inter-department corridors
- Detects gamma radiation
- 0.1 Kcpm to 4,000,000 cpm
- Digital display
- Includes two wall-mount NaI (Tl) scintillation detectors with enclosures and cables
- Separate LOW and HIGH alert/alarm with yellow/red lights, adjustable audible tones
- Detector failure light and tone to signal detector overload or instrument failure
- Low battery warning
- Threshold adjusts from 2 to 100 mV
- Battery continuously trickle charges when unit is operating and connected to wall current
- Detectors (2): 3" dia x 1" thick (7.6 x 2.5 cm) shielded NAI (Tl) scintillation detectors in NEMA4x enclosures
- Display: Four-digit LED display with 0.8" (2 cm) character height
- Display Units: 0.1 Kcpm to 4,000,000 cpm
- Linearity: Reading within ±10% of true value with detector connected
- Response: Typically three seconds from 10% - 90% of final reading
- Status: (green light) instrument functioning properly
- Alarm: Low Alarm - indicated by yellow light and slow beep (one per second) audible tone (can be set at any point from 0.0 - 9999); High Alarm - indicated by red light and fast beep (four per second) audible tone (can be set at any point from 0.0 - 9999); NOTE: Audible indicators can be configured as a single beep if desired
- Det Fail: Detector overload, no count from detector, or instrument failure Ð indicated by red light and audible tone (greater than 68 dB at 2 feet)
- Low Bat: (yellow) indicates less than two hours of battery power remaining
- High Voltage: Adjustable from 200 - 2500 volts
- Threshold: Adjustable from 2 - 100 mV
- Dead Time: Adjustable to compensate for dead time of detector and electronics (can be read on display)
- Overload: Senses detector saturation (indicated by display reading :"-OL-")
- Overrange: Indicates radiation field being measured has exceeded counting range of instrument (indicated by display reading "- - - -")
- Data Output: Nine-pin connector providing five decade logarithmic output, RS-232 output, signal ground connection, FAIL and ALARM signals (current sink), and direct connection to battery and ground
- Calibration Controls: Accessible from front of instrument (protective cover provided)
- Power: 90-260 VAC auto ranging; 220 VAC or battery power
- Battery Life: Typically 48 hours in non-alarm condition, 12 hours in alarm condition
- Battery Charger: Battery is continuously trickle charged when instrument is connected to line power and turned on
- Battery Dependence: <3% change in readings to battery endpoint
- Monitor Construction: Wall mount aluminum housing with ivory polyurethane enamel paint
- Dimensions:
- Monitor electronics unit: 7.4" h x 9.7" w x 2.5" depth (18.7 x 24.6 x 6.4 cm)
- Detectors (each): 13" h x 17" w x 8.5" l (33 x 43 x 22 cm)
- Connecting cables (each): 25-foot, type "C" connector - Weight:
- Monitor electronics unit: 6.5 lb (2.3 kg)
- Detectors (each): 32 lb (14.5 kg)
To order, call 1-800-224-6339
| 051-022 |
Monitor, Area, Entrance/Exit, 90-260 VAC Includes: Two NaI (T1) Scintillation Detectors |
$7,165.00 |
| 051-024 |
Monitor, Area, Entrance/Exit, 90-260 VAC Includes: Two NaI (T1) Scintillation Detectors |
7,165.00 |
