The GG1W uses a pair of halogen quenched Geiger Mueller tubes for sensitivity to ambient gamma radiation levels. The GM tubes are operated using a “Time-To-Count” method which removes the limitations associated with traditional ‘constant bias’ GM tube circuits.
- Detects gamma radiation from 80 keV to 2 MeV with a linearity of ±20%
- Dynamic range of 10? mSv/h to 10? mSv/hr
- Electrically connects via a multi-conductor shielded cable to an associated RDM-series Display and Control Unit
The GG1W is housed in a rugged cylindrical aluminum housing with a NEMA4 rating. When provided with an internal check source, the detector is designated as Model GG1WC.