Precise dielectric constant sensor
US6583631B2 · kind B2 · utility
5Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | May 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/2617
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An assembly for sensing the dielectric constant of liquids, and for detecting contamination, includes a central ceramic chip with a sensing capacitor formed on one end thereof and a signal processing circuit on the other end thereof. The capacitor is formed of two sets of closely spaced conductive lines or pathways with one set being grounded and the other set providing the variable output from the capacitor to the signal processing circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.