Capacitive liquid interface sensor
US5012683A · kind A · utility
36Cited by
10References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1990 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Jan 18, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/263
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A capacitive sensor is described having an element which traverses the outside of a container of liquid to ascertain the vertical locations of liquid interfaces in the container. The sensor uses an oscillator whose amplitude or phase is a function of the capacitance of the element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.