DEVICE FOR MONITORING A PREDETERMINED FILLING LEVEL OF A MEASURING MEDIUM IN A CONTAINER

摘要

The invention relates to a vibration detector for determining and/or monitoring a predefined filling level in a container. Said vibration detector comprises an oscillating unit (2), a drive/receiver unit (6), and an evaluation unit (8). The inventive vibration detector can also be used as a viscosity sensor or density sensor. In order to create a multivariable sensor, the oscillating circuit (7) that is formed by the oscillating unit (2) and an electronic feedback device (9) is provided with a microprocessor which corrects the phase of the electronic feedback device (9) across a given frequency bandwidth such that the sum of the phases of the electronic feedback device (9) and the microprocessor (8) follows a predefined function f(n).