| NAUSICAA 2IC can be used in activities involving air sampling from rooms, stacks, hoods, or other effluent passages, process piping, glove boxes, and similar.
NAUSICAA 2IC is composed of:
| The air to be monitored is sampled inside the upper chamber, while the lower one is sealed and filled with clean air (reference gas). The ionization occurring in the upper chamber is due to both environmental gamma background and beta contamination of the sampled air, whereas inside the lower chambers only gamma background is detected. The two chambers are provided with an opposite-polarity HV. This way, the resulting output current is actually the difference of the two single outputs, i.e. the net beta contamination of the sampled air, expressed in activity concentration.
An accessory equipment for filtering and drying the sampled air helps limiting as much as possible any spurious signals. |