Optical radiation sensor system and method for measuring radiation transmittance of a fluid
US7759651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2005 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Jul 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process for measuring transmittance of a fluid with first and second radiation wavelengths includes (i) positioning a polychromatic radiation source and a polychromatic radiation sensor in a spaced relationship to define a first thickness of fluid; (ii) detecting a first radiation intensity corresponding to the first wavelength at the first thickness; (iii) detecting a second radiation intensity corresponding to the second wavelength at the first thickness; (iv) altering the first thickness to define a second thickness; (v) detecting a third radiation intensity corresponding to the first wavelength at the second thickness; (vi) detecting a fourth radiation intensity corresponding to the second wavelength at the second thickness; and (vii) calculating radiation transmittance of the fluid in the radiation field from the first radiation intensity, the second radiation intensity, the third radiation intensity and the fourth radiation intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.