The Radiation Alert Frisker is a compact, hand-held energy-compensated survey meter designed to detect alpha, beta, gamma and X-ray radiation. Featuring a halogen-quenched GM tube with a large mica window, back-lit display, audible beep per count, customizable alarm threshold, and plug-and-play interface, it is ideal for contamination monitoring of surfaces, equipment, personnel and containers, as well as NORM material checks and activation surveys.
With a measurement range up to 50 mR/h (~500 µSv/h) and energy sensitivity down to 10 keV, it delivers high performance for radiation protection, QA and ambient monitoring in nuclear medicine and radiology environments.
Specifications
- Detector: energy-compensated halogen-quenched GM tube, 45 mm dia mica window (1.5-2 mg/cm²)
- Measurement range: up to 50 mR/h (up to 500 µSv/h); auto-unit switch µR/h → mR/h, nSv/h → µSv/h
- Sensitivity: ≈ 3600 CPM/mR/h (Cs-137 reference); detects beta ≥ 0.16 MeV, gamma ≥ 10 keV
- Accuracy: ±15 % standard, ±10 % with NIST calibration
- Alarm: selectable threshold (µR/h/CPM or nSv/h/CPS), audio + red LED count indicator
- Anti-saturation: operable up to 100× max rating
- Display: back-lit LCD, mode indicator
- Power: 2 × AA alkaline batteries (~800 h lifetime)
- Operating conditions: –10 °C to +50 °C; 10 %–70 % RH non-condensing
- Dimensions: 276 × 44 × 64 mm
- Weight: 217 g
- Supplied with: carrying case, wrist strap, batteries, rubber boot protection
Models
- Radiation Alert Frisker
