Moisture and salinity sensor and method of use
US5418466A · kind A · utility
52Cited by
10References
7Claims
0Family size
Inventors
Key dates
| Filing date | Aug 21, 1992 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Aug 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/2676
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a moisture and salinity measurement and in particular to a sensor and its method or use which may provide values for the moisture/complex dielectric constant of a variety of mediums. A sensor apparatus is arranged for indicating the complex dielectric constant and conductivity of a medium and uses a tuned circuit. The tuned circuit oscillates such that the frequency of oscillation is representative of the complex dielectric constant of the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.