Liquid pressure and level sensor systems and sensors, methods, and applications therefor
US11519772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2019 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Feb 10, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L23/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Pressure sensor systems for measuring a liquid pressure and deriving a liquid level from the measured pressure using gas pressure sensing devices. In one embodiment, liquid pressure results in compression or decompression of a trapped gas (as an example, air), wherein the gas pressure is detected by a gas pressure sensing device directly or a gas pressure sensing device that is protected inside a flexible pouch filled with a liquid. In another embodiment, a gas pressure sensing device is packaged in a flexible pouch filled with an inert liquid to protect the sensing device and circuit thereof from external contaminants while accurately transferring pressure from the liquid through a protective barrier. Application of such sensors in a wireless flood or a wireless liquid level measurement system is described as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.