High-sensitivity capacitive oil deterioration and level sensor
US5929754A · kind A · utility
63Cited by
74References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/0405
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high-sensitivity capacitive oil deterioration and level sensor includes a conductive housing member with an inner surface defining a ground electrode and conductive inner member with an outer surface defining a measuring electrode. The housing member is adapted to provide a fluidic connection between an oil container and a gap between the ground electrode and the measuring electrode. The sensor also includes electronics adapted to employ this capacitor geometry to generate signals indicative of a degree of deterioration and a level of the oil within the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.