Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Wulf Grählert

Stefan Kaskel

Philipp Wollmann

Florian Gruber

Ines Dani

Volkmar Hopfe

Peter Hartmann

Tobias Baselt

Harald Beese

Gerrit Mäder

Oliver Throl

Johannes Grübler

Wollmann Philipp

Jörg Schwarze

Steffen Leichnig

Eckehard Hofmüller

In the method for optical monitoring and/or determination of properties on samples, monochromatic electromagnetic radiation with a predetermined wavelength is sequentially directed from several radiation sources onto a sample influenced by an electronic evaluation unit. The respective intensity specific to the wavelength of the electromagnetic radiation scattered and/or reflected by the sample is detected by at least one detector and fed to the electronic evaluation unit for spectrally resolved evaluation in order to use it to monitor and/or determine properties of the respective sample.

Method for optical monitoring and/or determination of properties of sample

The invention relates to a device and a method for the optical detection of substances contained in exhaust gases of chemical processes, wherein exhaust gases are conducted all the way through a channel element that forms an optical measuring section; at the channel element there are two flanges, closed off to the ambient area, and at least one window element through which electromagnetic radiation for the optical detection can be directed from a radiation source to a optical detector through the channel element; a purge gas is fed through the flanges into the channel element, whereby with a purge gas led into one of the flanges a closed laminar purge gas flow is to be formed in the bottom area of the interior of the channel element.

Device and method for optical detecting substances contained in waste gases of chemical processes

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Dresden, Germany

Wulf Grählert