Harpellassociates

The Geiger measures beta, gamma, and x-rays. With each radiation event a red light flashes and a beeper sounds. (The beeper can be muted.) A cable and software for IBM PC-compatible computers is available. The Observer software expands monitoring and readout capabilities. A translucent label allows you to see the Geiger tube, which fluoresces (gives off light) in a dark room with an elevated radiation level. The Geiger is a low-cost instrument designed for schools and individuals.

Detector
Glass Geiger-Mueller detector detects Beta, Gamma, and X-rays. Sidewall density 50 mg/cm2 plus 15 mil Lexan window.

Operating Range
0-420,000 CPM

Beeper
Chirps for each count (can be muted).

Count Light
Red LED flashes with each count

Outputs
Dual miniature jack provides counts to a computer or data logger. Submini jack provides audio output to an external earpiece, amplifier, or tape recorder.

Power Requirements
One 9-volt alkaline battery. Typical battery life is 2000 hours at normal background radiation levels.

Weight
200 g (7 oz.) including battery.

Size
150 x 80 x 30 mm (5.9 x 3.2 x 1.2 inches).

Options
Observer Software, STAND and/or Carrying Case