The Frisker – Alpha, Beta, Gamma, X-Ray Contamination Meter


SE INTERNATIONAL-Radiation_Frisker


The Frisker / Digital Radiation Detector – a ß y x



The Radiation Alert® Frisker is a radiation contamination instrument that has been designed to meet the demands of today’s radiation responder. By integrating the latest electronics with a proven and dependable Geiger-Mueller detector, S.E. International has created a rugged, ergonomic tool that addresses a number of radiological applications.


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


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.


Readout will OVERRANGE in radiation fields as high as 100 times the maximum reading.


Pulsating beeper sounds the alert. Adjustable alert levels are used for µR/hr / CPM, and nSv/hr / CPS.
Energy Response Curve


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)


217 g (7.7 oz.)


276 x 44 x 64 mm (10.88 x 1.75 x 2.5 in.)


Carrying Case

Limited Warranty

1 year limited warranty



SE INTERNATIONAL-Radiation_Friskerradiation_friskerradiation_frisker2