Method and apparatus for monitoring liquid level in a container
US6502461B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 8, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Feb 8, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for remote monitoring of liquid level 21 within a container 12, such as the level of fuel within a propane cylinder. A magnetic float 20 disposed within the container 12 floats on the liquid 21, and lowers with the liquid level as fuel is consumed. Magnetic sensors 22 outside the container 12 sense the float 20 as it passes in the proximity of one of the sensors 22. A controller 26 receives output signals from the sensors 22 and transmits level indicating signals to a gauge 28 or other indicator for remote indication of the corresponding liquid level. The indicator 28 can be located proximal the user's direct line of sight, to remind the user to periodically monitor the fuel level to prevent running out of fuel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.