The instrument allows the simultaneous activity concentration measurement of Radon (Rn222) and Thoron (Rn220) based on a diffusion type measurement chamber.
The required fast exchange rate of sampled air is realized by a highly permeable chamber placed outside the instrument's enclosure. The relative Thoron sensitivity is comparable with one of pump based instruments.
The modified measurement chamber has been derived from the Radon-Scout while the electronics come from the RTM1688-2. That means, more than 2000 data records including a complete alpha spectrum can be stored. Of course, sensors for barometric pressure, temperature, and humidity are integrated too.
The Thoron Scout offers a larger Display compared with the Radon Scout. The replaceable batteries allow an autonomous operation of approximately one month. It is possible to operate the unit by mains power resulting in unlimited sampling periods.
There is also a switch output that can be used for alert purposes or to control ventilation equipment.
The instrument comes with a factory calibration certificate. The calibration process fulfills the requirements of the DIN ISO EN 17025.