Apparatus for detecting water in fuel
US4638305A · kind A · utility
31Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Mar 22, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Diesel fuel tends to deposit an insulating coating on surfaces it contacts. A probe, preferably in the form of a siphon tube, is coupled to a detection circuit which is responsive to either low resistance or high capacitance between the probe and ground. The probe is initially uncoated to make a resistive coupling to a fuel container when accumulated water touches the probe. When insulating deposits from the diesel fuel or other fuel oil coat the probe, capacitive coupling will occur between the probe and the accumulated water. In either case the presence of water triggers an output signal by the detection circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.