Liquid level measuring system
US4349882A · kind A · utility
32Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1980 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | Aug 22, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/263
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid level measuring system for the underground fuel storage tanks of a fuel dispensing station having a multiple segment capacitance probe in each storage tank and a microcomputer for periodically measuring the capacitance of each segment of each probe and calculating the level and volume of fuel in each tank using capacitance and volume calibration constants automatically updated by the microcomputer from the measured capacitance data and from fuel delivery data automatically fed to the microcomputer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.