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Detector: Halogen-quenched Geiger-Mueller tube. Effective diameter 1.75″ (45 mm). Mica window density 1.5-2.0 mg/cm²; Detects Alpha, Beta, Gamma, and X-radiation
Display: 128×128 color OLED (Organic Light Emitting Diode)
Operating Range:
µSv/hr: .000 to 1,000
µR/hr: .000 to 100,000
CPM: 0 to 350,000
Accuracy: ± 10% typical; ±15% maximum
Alert Range: 0 to 99,999 CPM; Beeper sounds the alert when warning level feature is activated
Anti-Saturation: Readout holds at full scale in fields up to 100 times the maximum reading
Audio: Beeper chirps with each count when Geiger Beep function is activated
Averaging: Accumulate/Average feature builds average over time when activated
Certifications: CE Certified: Emissions: EN 55011:2009 + A1:2010 (Class B emissions limits); EN 61000-4-2:1995 (ESD); EN61000-4-3:1997. RoHS Compliant, Meets WEEE standards
Count Light: Red LED flashes with each count
Calibration: Cesium-137 (gamma from daughter metastable Barium)
Gamma Sensitivity: 334 CPM per µSv/hr (3340 CPM per mR/hr) referenced to Cs-137
Efficiency: For 4 pi at contact
Beta C-14 (49 keV avg. 156 keV max.): 5.3% Bi-210 (390 keV avg. 1.2 MeV max.): 32% Sr-90 (546 keV and 2.3 MeV): 38% P-32 (693 keV avg. 1.7 MeV max.): 33%
Alpha Am-241 (5.5 MeV): 18%
I-125: Smallest detectable level for I-125 is .02 mCi at contact
Manual: ONYX Operation Manual
Options: USB cable, charger and carrying case available
Ports: Output: Stereo 3.5 mm jack sends pulses to headset or external data collection devices
Power: One 3.7 V Lithium Ion battery
Size: 130 x 660 x 230 mm (5.1 x 2.6 x 0.9 inches)
Temperature Range: -20º to +50º C , -4º to +122º F
Timer: Can set sampling periods of 1 minute to 40 hours.
Weight: 200 grams (7 oz) including battery
