Sensor system for detecting the fill level of a fluid in a vessel
AssigneeFresenius Medical Care Deutschland GmbH
InventorsJochen Schneider, Alfred Gagel
Life of this patent
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Abstract
The invention relates to a sensor system 10 for the capacitive measurement of the fill level of a fluid medium 22 in a container, preferably a bubble catcher of a dialysis device, comprising a receptacle 30 on which two contact areas are provided for contact with an external surface of the accommodated container and with at least one level detection electrode C1, C2, C11, C12, C21, C22 disposed in each contact area for capacitive detection of the fluid level in the container. The sensor system has a coupling measurement device C11, C12, C21, C22 for capacitive determination of the correct coupling.
Claims19
Sensor system (10) for the capacitive measurement of the fill level of a fluid medium (22) in a container, comprising a receptacle (30) on which two contact areas are provided for contact with an external surface of the accommodated container and with at least one level detection electrode (C1, C2, C11, C12, C21, C22) disposed in each contact area for capacitive detection of the fluid level in the container, characterized in that the sensor system has a coupling measurement device (C11, C12, C21, C22) for capacitive determination of the correct coupling of the container in the receptacle.
Method for the capacitive measurement of the fill level of a fluid medium in a container, wherein the container is held in a receptacle of a sensor system, the receptacle contacting an external surface of the container at two spaced apart areas, the sensor system including a level detection device comprising a level detection electrode located on the receptacle at each of the two spaced apart areas, each level detection electrode including divided electrode areas, wherein the level of fluid in the container is determined by capacitive measuring between the two level detection electrodes, and the correct coupling of the container in the receptacle is determined by capacitive measuring between the divided electrode areas of each level detection electrode.
Dependencies are inferred from the claim text.