DEVICE FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE OF A MEDIUM

摘要

The invention relates to a device (1) for determining and/or monitoring at least one process variable of a medium (10). Said device comprises at least one oscillating element (2) and at least one control/evaluation unit (3), which excites the oscillating element (2) into producing mechanical oscillations by means of at least one excitation/receiver unit (4) and which determines and/or monitors the process variable using the oscillations of the oscillating element (2) that have been received by the excitation/receiver unit (4). According to the invention, the control/evaluation unit (3) is configured in such a way that it excites the excitation/receiver unit (4) into simultaneously producing at least one first and one second oscillating mode. At least the first oscillating mode is selected in such a way that it is independent of the medium (10).