Geiger Counter
Versatile, easy-to-use and compact precision instrument for measuring ?-, ?- and ?-radiation. With filter selection switch at the front of the Geiger-Müller counter tube for filtering out types of radiation (?; ? and ?; ?, ? and ? radiation), large display and integrated RS232 interface. Includes interface cable, Windows software and operating instructions.

The following functions and operating modes are available for measurement:

• Standard mode for displaying the current radiation level. Display of the equivalent dose as a numerical value and as bar chart and display of the time until a selected cumulative dose limit is reached (default 5 ?Sv/h). Also equipped with variable acoustic and optical warning threshold signal and display of average radiation from previous day.
• Pulse counting either permanent or with variable gate time. Gate time adjustable in seconds, minute or hours. Additional optional acoustic count indication.
• Count rate measurement. The pulses registered are measured successively and converted into a count rate (number of pulses per second).
• Integrated display of date and time for correct recording of measured radiation.
• The number of pulses registered is stored in the internal memory. This facilitates recording e.g. of weekly values for up to 10 years.
• Computer docking station. The software enables the measured data to be evaluated and processed on an MS-Windows PC. Supported operating systems WIN 98/SE, NT 4.0, 2000, XP.

Radiation types: ? from 4 MeV, ? from 0.2 MeV, ? from 0.02 MeV
Measured variables: equivalent dose in Sv/h, mSv/h, ?Sv/h
pulses/s, pulses/variable time interval
Display: LCD, 4-digit, numerical with display of measured variable, quasi-analogue bar chart, operating mode indicators
Radiation detector: End-window Geiger-Müller counter tube, stainless steel housing with neon-halogen filling

Measuring length: 38.1 mm
Measuring diameter: 9.1 mm
Mica window: 1.5 to 2 mg/cm²
Gamma sensitivity: 114 pulses/min for 60Co radiation = 1 ?Sv/h in background radiation energy band
Background rate: 10 pulses per minute approx.
Internal memory: 2 kilobytes
Battery life: 10 years approx.
Dimensions: 163x72x30 mm
Weight: 155 g