Apparatus and method for analyzing fluids

Details Apparatus and method for analyzing fluids Apparatus and method for analyzing fluids

G - Physics

01

V

G01V 8/10 (2006.01) E21B 47/10 (2006.01) E21B 49/08 (2006.01) G01N 21/17 (2006.01) G01N 21/27 (2006.01) G01N 21/31 (2006.01) G01N 21/63 (2006.01) G01N 21/64 (2006.01) G01N 21/85 (2006.01) G01N 33/28 (2006.01)

Patent

CA 2392924

A method and apparatus for determining the concentration of a constituent in a fluid by directing a beam of light into the fluid and sensing the intensity of components of the light emerging from the fluid at various wavelengths. The light emerging from the fluid can be light that has been attenuated by absorption or induced by fluorescent radiation. The effect of scattering on the light is minimized by normalizing the component intensities, which are then applied to an algorithm incorporating weighting factors that weighs the influence that the intensity at each wavelength has on the determination of the concentration of the constituent for which the algorithm was developed. The algorithm is developed by a regression analysis based upon a plurality of known mixtures containing various concentrations of the constituent of interest.

L'invention concerne un procédé et un appareil permettant de déterminer la concentration d'un constituant dans un fluide par orientation d'un faisceau lumineux dans ledit fluide, et par détection de l'intensité des composants de la lumière émergeant du fluide à différentes longueurs d'ondes. La lumière émergeant du fluide peut être atténuée par absorption ou induite par rayonnement fluorescent. L'effet de diffusion de la lumière est réduit par normalisation des intensités des composants, qui sont ensuite appliquées à un algorithme incorporant des facteurs de pondération, qui pondèrent l'influence que chaque intensité, au niveau de chaque longueur d'onde, a sur la détermination de la concentration du constituant pour lequel l'algorithme a été développé. Cet algorithme est développé par analyse de régression fondée sur plusieurs mélanges connus contenant des concentrations variées du constituant considéré.

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