Level transmitter for a liquid container and method for determining the level in a liquid container
US6418787B1 · kind B1 · utility
5Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2000 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jul 13, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/2965
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A level transmitter for a liquid container includes a simple construction without feed lines to the sensors through the container wall. The level transmitter has a plurality of sensors made from magnetostrictive material, which are excited to oscillate by an alternating magnetic field emitted by a transceiver unit. The sensors oscillate at different frequencies which are detected by the transceiver unit. The detected signals are fed to an evaluation unit and used to form a signal for the level. The level transmitter and the method are particularly suitable for use in fuel tanks in motor vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.