Capacitance probe for liquid level measuring system
US4594892A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1985 |
| Grant date | Jun 17, 1986 |
| Priority date | — |
| Expiry date | Jun 7, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/268
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A liquid level measurement capacitance probe is disclosed comprising an elongated outer capacitor tube, an elongated inner tube coaxially mounted within the outer capacitor tube to form a capacitor annulus therebetween with the inner tube having a plurality of longitudinally extending capacitor elements cooperating with the outer capacitor tube to form a plurality of individual capacitor units, a connector unit for electrically connecting the capacitor units to an electronic circuit processor for measuring capacitance values of the capacitor units in calculating a fluid level, a filter for separating water from fuel flowing from the storage tank to be measured to the capacitor annulus, the filter having an annular housing mounted about the outer capacitor tube with an inlet port adapted for fluid communication with the storage tank, an outlet port connected to the capacitor annulus between the inner and outer capacitor tube for delivery of filtered fuel to the annulus, a water discharge outlet for discharging water from the filtered fuel, and a regulator for regulating the discharge of water through the discharge outlet into the storage tank to be measured, and a lower support hous…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.