Sensor for levels of conductive liquids
US7219545B2 · kind B2 · utility
11Cited by
11References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 28, 2004 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Oct 18, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/242
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid level sensor comprises a plurality of electrodes arranged in a defined relationship with respect to a container filling trajectory, a signal generator coupled to one or more of the plurality of electrodes, a signal receiver coupled to one or more of the plurality of electrodes, and a sensing circuit coupled to at least one of the signal generator and signal receiver. The sensing circuit is configured to produce an output indicative of electrical resistance between at least one pair of the plurality of electrodes. The sensing circuit may be associated with the signal receiver and/or with the signal generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.