The 'Radiation Alert' Ranger Pocket Geiger Counter is now smaller, more ergonomic, and with better features, all for the same price! The Ranger features a new interface with touchpad technology. Included with each instrument for no extra charge is a protective boot, carrying case and stand that holds the instrument upright for hands-free operation!
The Ranger offers maximum performance in a lightweight, rugged solution 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.
Internal Halogen-quenched, uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.77 in.).
mR/hr - .001 (1µR) to 100
µSv/hr - .01 to 1000
CPM - 0 to 350,000
CPS - 0 to 5000
Total Counts- 1 to 9,999,000 counts
(Referenced to Cs137) Typically ±15% from factory, ±10% with NIST Source Calibration
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. 3340 CPM/mR/hr (137Cs). Smallest detectable level for 125I is .02 µCi at contact.
Sulfur (35S), Strontium (90Sr/y), Cesium (137Cs), Phosphorus (32P), Carbon (14C), Iodine (131I), Cobalt (60Co), and Alpha
mR/hr .001 - 50 and CPM 1 - 160,000. Pulsating beeper sounds the alert. Adjustable alert levels are used for mR/hr / CPM, and µSv/hr / CPS. 70db @ 1m. Alarm will sound when in Timer Mode when set alarm threshold is reached.
Meter will hold at OVER RANGE in fields as high as 100 times the maximum reading.
Display updates every 3 seconds. At low background levels, the update is the average for the past 30-second time period. The timed period for the average decreases as the radiation level increases.
Graphic Display with Backlight
Red LED flashes with each radiation event
Internally mounted beeper (can be switched off for silent operation)
5,452 data points, which at 1 minute intervals as an example, equates to 3.7 days
USB for use with Free Observer USB Software for PCs
Two AA alkaline batteries (included)
140 X 68 X 33 mm (5.5 X 2.7 X 1.3 in.)
Carrying Case, Xtreme Boot, Stand, Mini-USB Cable, Observer USB Software Download , Certificate of Conformance
Wipe Test Plate, Swipes, NIST Calibration
1 year limited warranty
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Well made, easy to use, accurate, and comes with features not found on other units in this price range. For one, menu choices allow extra analysis of known isotopes. The included "Xtreme Boot" is another bonus included. SE International's Ranger is my first choice in radiation detectors. In its price range, I have found no others that compare. Highly recommended, for sure! Chris on Jun 17th 2020
Having owned many of the Civil Defense era geiger counters I was impressed when I received my Ranger. It is very easy to use in a nice compact package. My uses will be mostly background monitoring but I wanted the capability for decontamination checks if it is ever needed. The software hook up to a computer looks like it will be very useful for charting trends. Unknown on May 12th 2017