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Canberra Personal Radiation Detector Mini-Radiac with Alarms
Model MRAD 103

Dose Rate and Dose- 1.0 µR/hr to 500 R/hr (dose rate) and 0.1 µR to 999 R (total dose)

Specifically designed for First Responders and to monitor the situations they may encounter.

Measures and displays radiation dose rate and total dose.
Measurement Range:
• Dose rate: 1.0 μR/h to 200 R/h (0.01 μSv/h to 2 Sv/h)
• Cumulative Dose: 0.1 μR to 999 R (0.001 μSv to 999 Sv)
• Within ±30% of 100 μR/h (1 μSv/h) to 200 R/h (2.0 Sv/h)
• Energy compensated GM detector
Energy Range:
• ±40% from 60 keV to 1.5 MeV
Response Time:
• Achieves 90% of final reading in one second; subject
to step change from 1 mR/hr (10 μSv/h) to 55 mR/h
(550 μSv/h); updates display every second
Dose Read Out:
• Non-volatile memory will not be erased when read
• Re-zero by push button
• Alarm threshold configurable for dose and dose rate

Presettable two-level audio and visual alarms

Designed to operate in extremes of temperature, shock, humidity, dust, immersion and radiation.

Large, easy-to-read backlit LCD display

Innovative six button user interface.

Operable/readable by personnel in fire fighting or HAZMAT protective gear.

Uses standard AAA batteries

Ultra-small size (10.5 in.) and weight. (9.5 oz.)

Low life cycle costs due to calibration stability and automatic self calibration.

Patented *Time-to-Count* technology for wider dynamic range.

Data logging capability to 300 points.

“Stay time” display shows time remaining to dose alarm.

Source finder mode.


Additional information

Weight 2 lbs
Dimensions 8 × 8 × 8 in