Capacitive fill level sensor and method for estimating a fill level
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United States of America Patent
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Apr 30, 2013
Grant Date -
Aug 4, 2011
app pub date -
Nov 18, 2008
filing date -
Jan 10, 2008
priority date (Note) -
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Abstract
A capacitive fill level sensor for determining a fill level of a liquid is described. Two electrodes are provided having a plastic sheathing and a capacitance measuring device for detecting the electrical capacitance between the electrodes. An estimator device is used for estimating a fill level of a liquid between the electrodes based on the detected electrical capacitance, taking into account different dielectric constants for sections of the plastic sheathing in the liquid and outside of the liquid.
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