Non-invasive bottom up continuous liquid level transmitter
US7694560B1 · kind B1 · utility
9Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2007 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Mar 11, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/2962
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for measuring the level of liquid in a container has a substrate on which a plurality of piezoelectric elements are mounted that are to transmit ultrasonic energy upwardly through the bottom of a container placed on and supported by the substrate into the container and to receive ultrasonic energy reflected back from the liquid/air interface within the container from which the round trip time can be measured and the liquid level calculated. The plurality of piezoelectric elements are of predetermined shapes and mounted spaced apart on the substrate in an array to accommodate containers with different shape bottoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.