Mr. Rawles:
I recently purchased one of these units from Laurus Systems [1]. Upon opening the package, imagine my pleasant surprise to find that this piece of electronic gear was made in Finland, not communist China! While a bit pricey at $375, it is definitely a piece of lab quality gear, but rugged enough for field use. Clean, compact, easy to read LED [2] display. Pocket clip, audible alarm and powered by a standard AAA alkaline battery.
Specifications:
Radiation detected: Gamma and X-Ray
Measurement range: Dose: 1 uSv – 9.99 Sv or 0.1 mrem – 999 rem
Dose Rate: 5 uSv/h – 3 Sv/h or 0.5 mrem/h – 300 rem/h
Calibration: Better than + or – 5% (Cs-137, 662 keV at 2 mSv/h), Hp(10)
Dose rate linearity: Better than + or – 15% up to 3 Sv/h (300 rem/h)
Audible alarms: Seven separate alarms, sound level typically better than 85 dBA at 30 cm
* integrated dose
* dose rate
* dose overflow
* dose rate overflow at 3 Sv/h or 300 rem/h
* low battery 1 and 2
* defect
Alarm thresholds: Six preset values each for integrated dose and dose rate-push button selection
Power supply: One triple A alkaline cell, typical life is 1800 hours in background (dose mode)
Reader : Infrared communication via bottom of the dosimeter
Temperature range: -20 – + 50¬?C operational, humidity up to 90% RH, non-condensed -20 – + 70¬?C storing
Dimensions: 78 x 67 x 22 mm
Weight: 80 g –including battery
– Dutch in Wyoming