FILL LEVEL SWITCH AND SENSOR ELEMENT FOR A FILL LEVEL SWITCH

摘要

The invention relates a fill level switch (1) for detecting the fill level of a medium in a container (2), comprising a sensor element (3) for contacting the medium, a transmitter (4) for applying an electromagnetic transmission signals to the sensor element (3), and an evaluation unit (5) for detecting a receiving signal from the sensor element (3), wherein the sensor element (3) comprises at least one line (6) for conducting the sensor signal. The object of the present invention is to – at least partially - avoid the described disadvantages in known fill level switches, particularly to provide a fill level switch which is based on a robust measurement principle and which allows reliable cleaning. The object is achieved in the above-mentioned fill level switch in that the line (6) of the sensor element (3) is configured as a delay line, the sensor element (3) has a window (7) facing the medium in the installation position of the fill level switch, and at least part of the line (6) can be electrically influenced by the medium via the window (7).