manufacturer :       Genitron

model :                   Mini CX-3

annotation :           Dokumente engl.

The Geiger counter measures beta, gamma, x-ray and neutron radiation wich a muck greater sensitivity than conventional Geiger counters and proben.

Easy to use for both teachers and students: just switch it an and read off the value. Direct quantative display (from 0 to 30µSv/h). Individual pulsen indicated optically and acous­tically. Loud warning tone at approx. 50 µSv/h .

An electronic control System ensures that the unit functions reliably in daily use. All elements are designed for maximum shock resistance.

Areal of application:

The Geiger counter has proven indispensable wherever radioactivity and x-ray radiation must be measured quickly and precisely: in research and industry, in medicine and dentistry, in educational applications, civil defence, public and private secu­rity Services, mineral prospecting and environmental protection.

Technical data

Geiger counter

Housing:                                     Shock-resistant plastic, with wrist strap

Dimensions:                               155 mm x 72 mm x 42 mm

Weight:                                       Approx. 350 g (incl. battery)

Operating temperature range:   -5 to +50 °C

Power supply:                           Standard 9-volt battery; rechar­geable block battery or lithium

                                                  cells may also be used.

Battery replacement:                 The battery can be replaced by removing the front panel

Battery service life:                   10 to 100 hours, depending on type of battery and radiation

                                                  in­tensity

Measured value display:            0 - 30 µSv/h

                                                  0 - 3 mR/h

Measuring accuracy:                 ± 30 %, calibration with Cs-137

Pulse indication:                         3 kHz tone and light flach for each pulse.

The pulse counter 667 919 can be connected to the locket on the front via the connecting Gable

Warning threshold:                    Constant tone at approx. 50 gSv/h

Electrical function monitoring:   EPC-system for disturbance mo­nitoring

Radiation detector

Type:                                          Proportional detector, self-quenching

Design:                                       End-window counter tube,

                                                  extremely stable

End-window material:                Metal-plastic laminate

                                                  approx . 100 mg/cm ²

Effective measuring area:          104 mm x 32 mm

Detectable radiation:                  gamma/x-ray 20 keV‑

                                                  2 MeV, uncompensated, beta from 500 keV

Pulse counter

Housing:          Impact-resistant plastic

Dimensions     155 x 72 x 42 mm

Weight:            approx. 170 g Operating temperature range 0 to +50 °C

Power supply: DIGI-COUNTER TX supplied di­rectly from MINI-MONITOR (6 to 10 V DC, 0.5 to 2 mA)

Measured-value display:         6-digit LC-display

Measuring accuracy:   ± 1 pulse

Internat timer: 100 kHz-Quartz (type TX) Measurement

intervals :          Automatic:       1 min. or 10 min.

Manual:            Any length

Conventional radiation measuring Instruments use counter tubes, which haue a relatively small counting volume due to their round design. Devices of this type are not suitable for measuring weck radiation.

For this reason, this unit employs a detector technology which is characterized by exceptionally high detection sensitivity: The sandwich proportional counter tube SPZ-03.

The production method applied here permits not only the in­expensive manufacture of large-volume detectors, but also the best possible match to the dimensions of a hand-held device.

This internationally patented technology has proven itself time and again in actual practice.