Ultrasonic water level gauge and control device
US8630814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2011 |
| Grant date | Jan 14, 2014 |
| Priority date | — |
| Expiry date | Jan 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus, including an ultrasonic liquid level gauge and control system, includes a gauge configured to be coupled on the outside of a device, having a boiler or hot water tank, having liquid contained therein. The gauge is also configured to receive and contain a small part of the liquid of the device; and an ultrasonic transducing and signal processing arrangement configured to: reflect an ultrasonic pulse off a liquid surface of the small part of the liquid of the device contained in the gauge, and determine the level of liquid in the device based at least partly on a time of flight analysis related to the ultrasonic pulse reflected off the liquid surface of the small part of the liquid of the device contained in the gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.