Due to the low beta energy of Tritium it can only be sufficiently measured if it is
inside the detector without any absorbing material. By adding an air flow system to the
ionisation chamber FHT 191 N we converted it into a tritium detectctor. Ionisation
currents down to a few fempto ampere (10-15 Ampere!) can be measured and the integral
microprocessor electronic calculates the activity concentration.
- Measuring range: 3*104 ... 3*1010 Bq/m3
- the other features are inherited from FHT 191 N ionisation chamber
Of course such a detector system is also sensitive for gamma radiation and other
gaseous isotopes (noble gases). Therefore the amount of other components have to be
determined with other independent means.
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