Endress+hauser Group Services Ag

Endress+hauser Digital Solutions (deutschland)gmbh

Tobias Meinert

Joachim Mannhardt

Benjamin Scherer

Max Bergau

A stereoscopic measuring device for determining position information of an event location comprises a background surface and a lighting assembly having a first lighting position and a second lighting position for the illumination of the background surface at different angles. The light beams from the lighting positions passing through an event location are projected at spaced-apart projection locations at a projection location distance. The measuring device also includes an imaging apparatus for imaging the projection locations and an evaluation apparatus for detecting an event, for determining the projection location distance and the position information of the event location based on the projection location distance. The event location is a location at which the medium to be detected appears. Its interaction with the light beams changes a property of the projection locations compared to reference conditions in which the medium to be detected is absent or effective in a different way.

Stereoscopic measuring device for determining position information of an event location in an interstitial space from a reference point and method for determining position information of an event location in an interstitial space

A sensor for determining a measurand dependent on a concentration of a gaseous analyte in a liquid medium includes: a closed measurement chamber with a gas sensor sensitive to the gaseous analyte for generating a measurement signal which is dependent on the concentration of the gaseous analyte in the measurement chamber; a diffusion membrane impermeable to liquid and gas-permeable to the gaseous analyte, which diffusion membrane closes the measurement chamber and includes a medium-contacting second surface; an evaluation unit for determining the measurand on the basis of the measurement signal; and an ultrasound emission unit designed to introduce ultrasonic waves into the medium such that a mixing of the medium is generated in a volume adjacent the medium-contacting second surface. Further disclosed is a method for determining the measurand dependent on the concentration of the gaseous analyte in the liquid medium using the disclosed sensor.

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Freiburg, Germany

Tobias Meinert