Geiger-Mueller counter with Geiger-Mueller tube

Demonstration instrument for measuring ionizing radiation; very easy to transport and magnetically mountable;
the 26-mm LED display allows precise readings to be taken even at a great distance

TECHNICAL DATA:
Display: 4-digit LED display; digit height 26 mm
Switch: ON / OFF
MODE switch:
– IMP setting: manual start and manual stop
– MAN setting: manual start, one measurement is taken during the interval set on the TIME switch
– AUTO setting: measurement cycle is repeated for the interval set on the TIME switch

TIME switch: for the MAN and AUTO modes a valid measurement interval of 1, 10 or 100 seconds may be selected
SPEAKER switch: switches the speaker on or off
START switch: starts and stops measurement in IMP mode and starts it in MAN mode
GATE LED: indicates counter gate state
Analogue output through a 3.5 mm phone jack (10 mV / Hz)
BNC jack for connecting tube DR291-1Z
Power supply: 4 x 1.5 V mignon cells (included) or 5.5-mm hollow DC jack for 6 V / 500 mA
external power supply

Case: green ABS plastic with yellow labelling
Dimensions: approx. 160 x 120 x 45 mm; weight: approx. 475 g
Geiger-Muller tube specs: For registering the presence of alpha, beta and gamma rays;
tube in a red acrylic case (28 x 28 x 60 mm) and mounted on a support rod with a magnetic base (60 x 30 mm);
line marking centre; cord with BNC plug permanently attached; plastic lid to protect the end window.

Gas filling: Ne & halogen
End window made of mica, 9.1 mm in diameter
Plateau voltage: approx. 500 V
Dimensions: 30 x 60 x 49 mm
Axis height: 35 mm