The Ranger EXP offers maximum performance in a lightweight, rugged solution for using your survey meter in the field. The Ranger EXP is designed specifically for individuals operating in tough environments. The small, handheld unit offers excellent sensitivity to low levels of alpha, beta, gamma, and x-rays. The digital readout is displayed with a red count light and a beeper sounds with each count detected. Other features include an adjustable timer, selectable alert, and with the free Observer USB Software Family, you can download your collected data, and set alarms! Ranger Quick Specs PDF
Detector
RAP-RS2 Probe – External Halogen-quenched, uncompensated GM tube with thin mica window, 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.75 in.).
Operating Range
mR/hr – .001 (1µR) to 100
CPM – 0 to 350,000
µSv/hr – .01 to 1000
CPS – 0 to 5000
Total Counts- 1 to 9,999,000 counts
Accuracy (Referenced to Cs137)
Typically ±15% from factory, ±10% with NIST Source Calibration
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. 3340 CPM/mR/hr (137Cs). Smallest detectable level for 125I is .02 µCi at contact.
Built-In Efficiencies
Sulfur (35S), Strontium (90Sr/y), Cesium (137Cs), Phosphorus (32P), Carbon (14C), Iodine (131I), Cobalt (60Co), and Alpha
Selectable Alert Set Range
mR/hr .001 – 100 and CPM 1 – 350,000. 70db @ 1m. Pulsating beeper sounds the alert. Adjustable alert levels are used for mR/hr / CPM, and µSv/hr / CPS. Alarm will sound when in Timer Mode when set alarm threshold is reached.
Anti-Saturation
Meter will hold at OVER RANGE in fields as high as 100 times the maximum reading.
Averaging Periods
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.
Display
Graphic LCD with Backlight
Count Light
Red LED flashes with each radiation event.
Audio Indicator
Internally mounted beeper (can be switched off for silent operation)
Outputs
USB for use with Free Observer USB Software Family
Power Requirements
Two AA alkaline batteries (included). Approx. 800 hrs @ background
Size
140 X 68 X 33 mm (5.5 X 2.7 X 1.3 in.)
Probe: 260 X 70 X 25 mm (10.25 X 2.75 X 1 in.)
Weight
20 oz (1.25 lbs.)
Includes
RAP-RS2 External GM Probe, 3 ft BNC Cable, Carrying Case, Xtreme Boot, Lanyard, Stand, Batteries, Mini-USB Cable, Observer USB Software Download, Certificate of Conformance
Options
NIST Calibration
Limited Warranty
1 year limited warranty
Dec 21, 2017
My last 10 orders have been in stock; acknowledged and shipped same day. Excellent customer service. Beth is a pleasure to work with.
Jul 13, 2017
I am quite impressed with the new Ranger. The first feature that grabbed me was its smaller size and a rubber grip that favorably reminds of my Garmin GPS handheld. That was a great idea to include the integrated Rubber Boot, and I see that its design, with the U-shaped top face, anticipates the EXP probe cable connector. A well thought out Instrument Stand, too. I also like the addition of the uR/hr units, which at background levels, conveys the radiation level in familiar integers, but unlike the similar CPM, represents a standardized unit of measure. I haven’t studied the manual yet, but the new Interface is fairly intuitive, and the new Membrane Key Pad is physically easy to navigate with your thumb. That Control Panel is very eye-catching! The Display is much improved over that of the Inspector USB which had some issues. The characters are large and easy to read, especially with the 1 button Backlight feature if needed.
On the other hand, apparently there is no Audio port for discrete earphone listening, a feature that would appeal to a minority of users, though. The USB is plug and play for transmission of radiation data to a PC with software, but I did notice that whenever I restart my software, that the USB connectivity is lost, so I need to unplug the cable and re-plug it back in. Maybe check for that anomaly in usage with the included Observer software. Since the Ranger has Internal Memory and Data Logging capability, a GPS chip to add associated location to radiation levels would seem a natural accompaniment, but I don’t believe there is one.
In terms of packaging, I love that integrated boot so much that I am wondering if any carrying case in addition to that is even necessary? I probably would never use it. At most, you could offer a smaller version of your rain-resistant, yellow case, either included or optional. So I would ditch the old nylon zippered case, pre-install the batteries, _and_ the rubber surround, so that when your customer opens the box, the Ranger is already configured for immediate and likely mode of use (that would really make a great first impression!). I also believe in some sort of printed manual for a product that is both in this price range, and that needn’t be used with a computer, but I know your company wants to go “green”.
Overall, I believe the Ranger is greatly improved over the Inspector USB – I think you have a real winner here. Good job!
Jun 7, 2017
I’ve been with them for quite a while now and you can always count on the Radiation Alert detection line (pardon the pun) for quality and accuracy. Customer support is unparalleled and ready to assist. The new Radiation Alert® Ranger is the latest and greatest to the line and it really knocks it out of the park in terms of ease of use, rugged-ability, and aesthetic design. It’s a great Radiation Survey Meter for in the lab or in the field.
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