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The first major change in a GM pancake based instrument in decades. The Abacus utilizes hand-held computers and desktops to pack unprecedented functionality into a convenient, lightweight instrument. A unique, ergonomically designed, comfort grip makes it easy to hold for extended periods of time. The tension-mounted detector head has a wide range of motion that can be easily adjusted for use in any working environment. A Windows™ or Palm™-based computer with the Abacus software provides all display and control functions.

Detector: Two Internal Halogen-quenched, uncompensated GM tubes, one with a thin mica window (pancake only), 1.4-2.0 mg/cm2 areal density. Effective diameter of window is 45 mm (1.75 in.). Radiation symbols on labels mark the center of the detectors.

Operating Range:

Exposure Rate
μR/h - 0 to 2,000,000 μR/h
mR/h - 0 to 2,000 mR/h
μSv/h - 0 to 20,000 μSv/h
Accumulated Dose
1.8E308 mR

Count Rate
cps - 0 to 12,500 cps
cpm - 0 to 750,000 cpm
Sample Counting
Total counts - > 99,999,999,999

Accuracy: ±15% over the entire operating range
Display: Handheld or Desktop Computer
System Requirements: Windows XP, 98, 2000, and Windows Mobile and PalmOS
Response Times: Slow = 30 seconds, Medium = 15 seconds, and Fast = 10 seconds
Alert Set Range: Software Alarm - mR/hr .001 - Full Range for both Accumulated Dose and Exposure Rate. The Probe’s internal alarm is
Exposure Rate only.
Gamma Sensitivity: 7.5 CPS/mR/hr referenced to Co60. Smallest detectable level for I-125 is .02 μCi at contact.
Timer: Total Count timer from 1 -99,999,999,999 seconds.
Count Light: Red LED flashes with each radiation event.
Audio Indicator: Internally mounted beeper (can be switched off, volume adjusted and can be set for single tube audio).
Outputs: Bluetooth Wireless (30 ft range): count to computer, handheld or PDA phone.
Anti-Saturation: Meter will hold at full scale in fields as high as 100 times the maximum reading.
Power Requirements: 2 AA alkaline batteries.
Temperature Range: -10ºC to 50ºC (14ºF to 122ºF).
Weight: 337.4 grams (11.9 oz.) with battery.
Size: 332.7 x 63.5 x 35.6 mm (13.1 x 2.5 x 1.4in.).