Capacitive Level Meter
A capacitive level meter is a measuring instrument that uses changes in capacitance to measure the level of medium inside a container. Inside the container, the container wall made of electrodes and conductive materials forms a capacitor. For a given electrode, when the dielectric constant of the measured medium remains unchanged, applying a measurement voltage of fixed frequency to the electrode causes the current flowing through the capacitor to depend on the height of the medium between the capacitor electrodes and be proportional to it.
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Strong adaptability: Uses radio frequency technology to solve problems such as large temperature drift and difficult calibration in traditional level meters [8].
Maintenance-free: No moving parts, basically maintenance-free [2] [8].
Wide application: Suitable for measuring liquids, solids, and interfaces, especially suitable for high temperature, strong corrosion, and dusty environments.
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