Adjustment-free fill level sensor
AssigneeVEGA Grieshaber KG
InventorLevin Dieterle
Life of this patent
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Abstract
A measuring instrument for detecting a fill level or a limit level of a medium, for example fill levels in containers or chambers, is provided. The measuring instrument includes a sensor unit, which takes at least two measurements at two different penetration depths in the medium. For this purpose, an arithmetic-logic unit makes calculations so as to distinguish complete covering of the sensor unit by a medium from adhesion of parts of the medium to the sensor unit, using the results of the measurements.
Claims16
A measuring instrument for detecting a fill level or a limit level of a medium, comprising:
- a sensor unit configured to take two measurements at two different penetration depths in the medium, the two different penetration depths being relative to a position on the sensor unit, and
- an arithmetic-logic unit configured to distinguish complete covering of the sensor unit by a medium from adhesion of parts of the medium to the sensor unit, using the results of the at least two measurements.
A method for detecting a fill level or limit level of a medium, comprising:
- taking at least two measurements at at least two different penetration depths in the medium using a sensor unit, the two different penetration depths being relative to a position on the sensor unit, and
- deciding whether the sensor unit is completely covered by a medium or parts of the medium are adhering to the sensor unit.
Dependencies are inferred from the claim text.