Steel cable material static capacitance type liquid level switch / high temperature capacitance sensor

Steel cable material static capacitance type liquid level switch / high temperature capacitance sensor

The radio frequency admittance level controller is based on radio frequency (RF) capacitor technology. Apply a radio frequency to the probe, and through continuous analysis, determine the impact caused by the surrounding environment. The energized probe and the container wall constitute the two plates of the capacitor. The insulator of the probe and the surrounding air become dielectric materials.When air is replaced by any other material, Changed the impedance of the application, the change in capacitance caused the change in impedance. After this influence is measured by the circuit, it is compared with the reference established by the sensitivity setting (circuit).

The correct setting of sensitivity will affect the correct change of sensor output. The anti-sticking circuit of the probe can make the measuring circuit ignore the material accumulated on the probe, otherwise it will cause sensitivity failure. Since the current cannot flow at the same potential, the anti-adhesion circuit blocks the current flow from the energized probe to the container wall through the accumulated material. So measured is the material around the energized probe, not the accumulated material.