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Detector:
Halogen-quenched Geiger-Mueller detector (LND 712)
Mica end window density is 1.5–2.0 mg/cm2
Side wall is 0.012″ #446 stainless steel
Detects Alpha, Beta, Gamma, and X-radiation
Display: 4-digit liquid crystal display with mode indicators
Operating Range:
µSv/hr: .000 to 2000
mR/hr: .000 to 200
CPM: 0 to 350,000
CPS: 0 to 3,500
Total: 0 to 9,999,000 counts
Calibration: Cesium-137 (gamma)
Gamma Sensitivity: 1,200 CPM/mR/hr referenced to Cs-137
Accuracy: ±10% typical; ±15% maximum
Alert Range:
µSv/hr: .001 to500
mR/hr: .001 to 50
CPM: 1 to 350,000
CPS: 1 to 3,500
Beeper sounds the alert
Timer: Can set sampling periods of 1 minute to 40 hours
Averaging Periods:
Display updates every 3 seconds, showing the average for the past 60-second time period at normal levels. The averaging period decreases as the radiation level increases.
Count Light: Red LED flashes with each count
Audio: Beeper chirps for each count (can be muted)
Ports:
Output: Stereo 3.5 mm jack sends signal to standard headset, computers, data loggers: Nominal 6V pulse 1 kOhm impedance.
Input: 2.5 mm mono jack provides calibration input. 0–3.3 V, > 5 µs width, rising edge triggered.
Anti-Saturation:
Readout holds at full scale in fields up to 100 times the maximum reading
Temperature Range: -20° to +50° C , -4° to +122° F
Power: 1 AA alkaline battery
Size: 150 x 80 x 30 mm (5.9″ x 3.2″ x 1.2″)
Weight: 225 grams (8 oz) including battery
Certifications:
Certified; Emissions: EN 55011:2009 +A1:2010 (Class B emissions limits); EN 61326-1:2006 (Class B) RF Emissions; Immunity: EN 61326-1:2006 (Annex C) Portable Test and Measurement Equipment; EN 61000-4-2:1995 (ESD); EN
