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Graetz Gamma Twin

Product Code: F00.1189

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Dose Rate Meter
GRAETZ GammaTwin

Small and handy, easy to operate dose rate meter for the measurement of gamma radiation and X-rays
Dose equivalent rate H*(10)
Detector: energy compensated Geiger-Muller-tube
Large, digital indication of measured values on LC-display (illuminable)
Selectable simultaneous or separate indication of dose and dose rate,additionally quasi-analog indication of dose rate (logarithmic bargraph)
4 preset dose rate alarm thresholds
4 preset dose alarm thresholds
Acoustic single-pulse indication can be switched on; especially for the use in non destructive testing it is possible to reduce the pulse rate of background radiation to 1-2 counts/minute (to be set in a special menu point)
Automatic and continuous storage of the dose
Storage of the dose and of set parameters even at battery change
Continuous test functions and permanent self control (displayed by a function control symbol) guarantee operational safety and suitability for daily use
Designed for "heavy-duty" use, housing made of aluminium, protection class IP54 (splash proof)
Menu-driven user navigation
Power supply by 2 batteries type AAA 1,5V
Supply with a robust Nylon bag and an earphone for loud work environments


Technical Data

Dose rate indication range: 0 nSv/h - 70 mSv/h
Dose rate measuring range: 0.5µSv/h - 70 mSv/h
Dose indication range: 0 nSv - 1.0 Sv
Dose measuring range: 0.5 µSv - 1.0 Sv
Energy range: 45 keV - 1.3MeV
Dose rate alarm thresholds:

7.5 µSv/h, 25 µSv/h

40 µSv/h, 300 µSv/h

 Dose alarm thresholds:

200 µSv, 500 µSv,

1,000 µSv, 2,000 µSv

Temperature range: -20°C up to +60°C 
Power supply:  2 batteries 1.5V (AAA) 
Acoustic alarm:  80dB(A) measured in 30cm distance 
PTB-Approval No:  23.51/10.02 
Dimensions: (26×66×103) mm 
Weight: 190g (with batteries) 

Additional Information

Additional Accessories N/A
Product Code F00.1189

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