Detector

Energy Compensated Halogen-quenched GM tube.

Operating

mR/hr – .001 (1µR) to 1000 mR/hr
µSv/hr – .01 to 10000
CPM – 0 to 450,000
CPS – 0 to 7500
Total Counts – 1 to 9,999,000 counts

Energy Sensitivity

450 CPM/mR/hr referenced to Cs137. Detects gamma and x-rays down to 40 keV. Response is flat from 40 keV up.

Accuracy

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

Anti-Saturation

Readout will OVERRANGE in radiation fields as high as 100 times the maximum reading.

Selectable Alert Set Range

mR/hr .001 – 1000 and CPM 1 – 450,000. 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.

Display

Graphic LCD with Backlight.

Outputs

USB for use with Free Observer USB Software for PCs
Bluetooth for use with the Free Observer BLE App for Android

Count Light

Red LED flashes with each count.

Audio Indicator

Sounds with each count (can be switched off for silent operation)

Power Requirements

USB Power or Two (2) AA alkaline batteries (included). Approx. 800 hrs @ background.

Temperature Range

-10° to +50°C (14° to 122°F)

Humidity

10% to 70% Non-Condensing.

Size

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

Weight

204 g (0.45 lbs.)