Radiation Alert Ranger Data Sheet

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ENERGY RESPONSE

RELATIVE

PHOTON ENERGY (keV)

COUNTRATE

Tube Window
Side Wall

The Ranger offers maximum performance in a lightweight, rugged solution

for surveying at the facility or in the eld. The Ranger has been designed
for industrial environments, but it still has all of the features you’ve come
to love in the lab. The Ranger is a small, handheld, microprocessor-based
instrument which offers excellent sensitivity to low levels of alpha, beta,
gamma, and x-rays and has built in efciencies 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, set computer alarms, and calibrate your

instrument!

Detector

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.).

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.

Operating Range

mR/hr - .001 (1µR) to 100 CPM - 0 to 350,000
µSv/hr - .01 to 1000 CPS - 0 to 5000

Total/ Timer - 1 to 9,999,000 counts

Accuracy

(Referenced to Cs137) Typically ±15% from factory, ±10%
with NIST Source Calibration

Size

140 X 68 X 33 mm (5.5 X 2.7 X 1.3 in.)

Weight

10.3 oz (0.64 lbs.)

Energy Sensitivity

3340 CPM/mR/hr referenced to Cs

• Detects Alpha down to 2 MeV.

• Detects Beta down to .16 MeV; typical
detection efciency at 1 MeV is approx.
25%.

• Detects Gamma down to 10 KeV through
the detector window. Smallest detectable level

125

for I

is .02 µCi at contact.

137

Built-In Efciencies

35

Sulfur (S35), 90Strontium (Sr/y90),

(Cs137), 32Phosphorus (P32), 14Carbon (C14),

131

Iodine (I131), 60Cobalt (Co60), and Alpha

137

Cesium

P.O. Box 39, 436 Farm Rd. Summertown, TN 38483
1-800-293-5759 | Fax: [phone]
www.seintl.com | [e-mail]

®

INTERNATIONAL

Display

Backlit Graphic LCD with Backlight

Count Light

Red LED ashes with each radiation event

Alert Set Range

mR/hr .001 - 100 and CPM 1 - 350,000

Alarm Indicator

Internally mounted beeper. 70db @ 1m.
(can be switched off for silent operation)

Outputs

USB for use with Observer USB Software Family

Anti-Saturation

Meter will hold at full scale in elds as high as 100 times
the maximum reading.

Power Requirements

Two AA alkaline batteries

Includes

Carrying Case, Xtreme Boot, Stand, Batteries, Mini-USB
Cable, Observer USB Software Download , Certicate of

Conformance

Options

Wipe Test Plate, Swipes, NIST Calibration

Limited Warranty

1 year limited

Ruggedized boot

and Stand Included

View of Back

with Ruggedized

boot

P.O. Box 39, 436 Farm Rd. Summertown, TN 38483
1-800-293-5759 | Fax: [phone]
www.seintl.com | [e-mail]

Wipe Test Plate

USB Observer Software collects data stored in the internal

memory of The Radiation Alert Ranger

®

INTERNATIONAL