Apparatus and method for measuring the level of a liquid
US10408661B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Mar 20, 2017 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Oct 3, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/804
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for measuring the level of a liquid. The apparatus comprises an elongated, thermally conductive probe with an upper region to be disposed above the surface of the liquid, a lower region to be disposed below the surface of the liquid, and a middle region. A heater adds heat to the probe, and temperature sensors may measure the temperature of the probe in the upper and lower regions. An actuator may introduce a vibration into the probe at a first location, and a vibration sensor senses the arrival of the vibration at a second location. Electrical circuitry controls may be used to receive signals and make measurements. The liquid level may be computed by electrical circuitry controls via an equation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.