[Zurück]

M. Harasek, B. Lendl, C. Gasser, B. Haddadi, C. Jordan:
"Methods for the contactless determination of flow parameters and analytes within the flow";
Patent: PCT, Nr. Wo 2018/192996; eingereicht: 19.04.2017, erteilt: 25.10.2018.

Methods for the contactless detn. of the speed of a fluid flow
and the concn. of at least one analyte in it in which the flow
speed is measured by means of laser Doppler anemometry
(LDA) (sic) tracer particles which pass through an interference
fringe pattern in the intersection region of two coherent
monochromatic light beams and generate a scattered light
signal; and the concn. of the at least one analyte is measured
by means of Raman spectroscopy in which a monochromatic
light beam is radiated in and the Raman spectrum of the light
inelastically scattered on the analyte mols. in the flow is
recorded are described in which a single light source is used
for both the LDA and the Raman spectroscopy, so that both
measurements are carried out in the intersection region of two
two coherent light beams coming from the light source, so that
the speed is measured by photons elastically scattered onto
the tracer particles and the concn. is measured by photons
inelastically scattered onto analyte mols.; and, for the speed
measurement, the elastically back-scattered photons are
detected by the same lens optic that is used for the radiation of
the light beams. Application in following mixing processes is
indicated.