Radiation Alert Ranger Detector

The Radiation Alert Ranger Detector offers maximum performance in a lightweight, rugged nuclear radiation detector for surveying at the facility or in the field. The Ranger has been designed for industrial environments, but it still has all of the features you’ve come to love in the lab. It’s small, handheld, digital NORM meter and offers excellent sensitivity to low levels of alpha, beta, gamma, and x-rays.

This model has built in efficiencies for common isotopes to calculate activity in Bq and DPM. It has a backlit digital display, a red count light, and a beeper that sounds with each count detected. Other features include selectable alert levels, an adjustable timer, and an optional wipe test plate for swipes. Internal memory and the free Observer USB Software allow you to download your data, and set computer alarms.


Detector Internal Halogen-quenched, uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 areal density
Operating Ranges mR/hr: .001 to 100
nSv/hr: .01 to 1,000
CPM: 0 to 350,000
CPS: 0 to 5,000
Total Timer: 1 to 9,999,000 counts
Averaging Periods Display will update every 3 seconds, at low background levels, the update is the moving average for the past 30 second time period, the timed period for the moving average decreases as the radiation level increases
Built In Efficiences 35Sulfer (S35), 90Strontium (Sr/y90), 137Cesium (Cs137), 32Phosphorus (P32), 14Carbon (C14), 131Iodine (I131), 60Cobalt (Co60) and Alpha
Accuaracy (Cs137) Typically ±15% from factory, ±10% with NIST Source Calibration
Energy Sensitivity Alpha down to 2 MeV
Beta down to .16 MeV, Typical detection efficiency at 1 MeV is about 25%
Gamma down 10 KeV through the detector window, smallest detectable level for I125 is .02 µCi at contact
Anti Saturation Readout will overrange in radiation fields as high as 100 times maximum reading
Alert mR/hr: .001 to 100
CPM: 1-350,000
Display Backlit LCD with mode indicators
Count Light Red LED flashes with each count
Audio Indicator Internally mounted beeper, can be switched to silent mode
Power 2 AA alkaline batteries, battery life about 1,000 hours
Outputs Bluetooth BLE for Observer BLE (RadResponder Ready)
USB for use with Observer USB Software family
Size 5.5″ x 2.7″ x 1.3″, .64 pounds

Ordering Information

Each unit includes a carrying case, Xtreme boot, stand, Mini-USB cable, Observer USB software, certificate of conformance. For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email sales@afcintl.com.

Catalog No.
Radiation Alert Ranger


Radiation Alert Ranger Detector Datasheet

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