Instrument for measuring levels of concentration of tritium and tritium oxides in air
US4618774A · kind A · utility
Inventors
Key dates
| Filing date | Aug 13, 1984 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Aug 13, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/178
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An instrument for measuring levels of concentration of tritium and tritium oxides in environmental air includes a scintillation detector, such as a photomultiplier, and a controlled device for exposing scintillators to the detector in succession. Air being monitored is passed over the scintillators. A thermoelectric device is used to cool and warm one of the scintillators for condensing air moisture onto its surface and for evaporating moisture from it, the count rate being measured in both instances. The other scintillator is a reference scintillator, the count rate from which is also measured, and a measurement is taken with neither of the scintillators exposed to the scintillation detector. The concentration levels of tritium and tritium oxides are computed from the set of measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.