Capacitance level instruments can be used for point level detection and continuous level measurement, particularly in liquids. The measuring principle is based on the change of the capacitance in a capacitor. The electrically conductive tank wall and a probe inside of the tank form a capacitor, the capacity changes of which are used to determine the level. This animation shows the measuring principle in conductive liquids and non-conductive liquids.
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Capacitance, instruments, liquid, tank, conductive