Method and apparatus for capacitively determining the uppermost level of a liquid in a container
US7150190B2 · kind B2 · utility
19Cited by
25References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | Dec 19, 2006 |
| Priority date | — |
| Expiry date | Jul 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2035/1025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid level sensor confirms actual physical contact between a probe and a liquid by verifying that any change in capacitance of the sensor is constant over a given time period and thereby is not caused by spurious electrical disturbances or other measuring irregularities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.