The Frisker Digital Radiation Detector

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The Frisker Digital Radiation Detector

The Radiation Alert® Frisker is A light weight, single-handed radiation contamination instrument that has been designed to meet the demands of today’s radiation personnel for leak testing, surface monitoring, sample screening, and personnel screening. 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. The Radiation Frisker detects alpha, beta, and gamma with an assortment of units of measure, customizable alarm levels, and a backlit display.


  • One-hand operation.
  • Includes Carrying Case, Lanyard, Batteries, and Protective Boot. Protective boot fits most industry standard dose rate and compensation filters.
  • Powered by 2 AA Batteries
  • 1 year limited warranty

The Frisker Digital Radiation Detector

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 (included). Battery life is approx. 1000 hours at normal background radiation levels.

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

Weight: 217 g (7.7 oz.)

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

The Frisker Digital Radiation Detector

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