Radiation Alert Frisker

Detector: Halogen-quenched GM tube with thin mica end window. Mica window density 1.5-2.0 mg/cm2. Effective diameter of window is 45 mm (1.77 in.). Side wall is .012 inch thick.

Operating Range: µR/hr - 1 to 50,000 CPM - 0.0 to 175,000 nSv/hr - 1 to 500,000 CPS - 0.0 to 2500  

Accuracy: Typically ±15% from factory. , ±10% (NIST).

 

Energy Sensitivity: Detects Alpha down to 2 MeV. Detects Beta down to .16 MeV; typical detection  efficiency at 1 MeV is approx. 25%. Detects Gamma down to 10 KeV through the detector window. 3600 CPM/mR/hr  (137Cs). Smallest detectable level for 125I is .02 µCi at contact.

Anti-Saturation: Readout will OVERRANGE in radiation fields as high as 100 times the maximum reading.

Alert: Pulsating beeper sounds the alert. Adjustable alert levels are used for µR/hr / CPM, and nSv/hr / CPS.  

Display: Backlit liquid crystal display with mode indicators.

Count Light: Red LED flashes with each count.

Audio Indicator: Sounds with each count (can be switched off for silent operation)

Power Requirements: Two (2) AA alkaline batteries. Battery life is approx. 200 hours at normal background radiation levels.

Temperature Range: -10° to +50°C (14° to 122°F)