Plate array for moisture sensor with reduced sensitivity to loading effects
US5671633A · kind A · utility
89Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1996 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Feb 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plate array for moisture sensors has a transmitter electrode and a detector electrode interposed between portions of a phase electrode. The transmitter and phase electrodes are driven with alternating current signals having a one hundred and eighty degree phase difference so as to induce a signal at the detector electrode relating to a moisture content of a material in the electrical fields which has a reduced sensitivity to electrically loading the material, such as from contact with a hand or steel roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.