Method for non-intrusive measurement of low water content in oil
US9869664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Sep 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method and apparatus for determining trace amounts of water in oil, including the steps of obtaining a blended sample of a low water content fluid including an amount of water and an amount of oil, transferring a portion of the blended sample to a cuvette to create a measurement sample, covering a viewing surface of the cuvette with an opaque sheet with a slit, providing a barrier with a fixed opening between a laser source and a laser-receptive surface of the cuvette, transmitting a pulsed laser beam from the laser source into the cuvette; inducing fluorescence in the measurement sample, focusing the fluorescence through a collecting lens and transmitting the fluorescence to a spectrometer, and measuring the fluorescence with the spectrometer by dispersing the fluorescence with a spectrograph and intensifying the fluorescence with an intensified charge coupled device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.