Detection of liquids
US6717658B1 · kind B1 · utility
9Cited by
3References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 17, 2001 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Oct 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/55
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Liquid, particularly leaked oil or other hydrophobic liquid, is detected by a sensor. This preferably has a hydrophobic membrane (G) that takes up the oil selectively, a radiation source (A) that beams radiation at an interface between the membrane (G) and a window (F), and a radiation detector (H) that receives radiation resulting from interaction (such as reflection, scattering or fluorescence) of the input radiation with the liquid-containing membrane (G). The detector may employ a spectrofluorimeter (H) whose output can be used to characterise the liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.