#Product Trends
RF Technology Decoded – How Electrical Signals Deliver Reliable Level Detection
RF technology (Radio Frequency Capacitance) uses high-frequency measurement for precise level detection. Unlike purely capacitive sensors, it detects not only changes in capacitance but also the specific resistance of the medium.
HOW DOES RF TECHNOLOGY WORK?
* The principle is based on an electrical voltage divider. Together with the medium, the probe forms a measuring system that detects both capacitance and impedance.
* Impedance describes the total electrical resistance a medium presents to an alternating current. It indicates how strongly a material reacts to electrical signals – and this change is exactly what RF technology uses for reliable detection.
* When the material comes into contact with the electrode, the capacitance increases abruptly – a clear signal that the level has been reached.
* The longer the active electrode, the more sensitively the probe responds. This allows the measurement to be precisely adapted to different media and vessel conditions.
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WHY IS RF TECHNOLOGY SO RELIABLE?
* RF sensors operate with high stability, even in demanding environments – for example in dusty conditions, with changing material properties, or with low dielectric constants.
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