Self-heated liquid level sensor
US7181965B2 · kind B2 · utility
5Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2004 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Apr 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/248
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid level sensor comprising a thermistor probe and a power source connected to the thermistor probe to heat the thermistor probe. A cover encases the thermistor probe and includes openings allowing liquid to enter and exit an interior of the cover and contact the thermistor probe. A detector detects a liquid level in response to a voltage at the thermistor probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.