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Continuous Capacitance probe & Controller

A capacitance probe works in two ways - with Conducting liquids and non-conducting liquids.

The capacitance principle uses two detector plates and one insulator. By changing one of the factors you can measure its change and give a continuous output signal.

For conducting liquids
Use a metal rod which is insulated. As the conducting liquid rises and falls in the tank.
The change is detected and a signal is produced

For NON conducting liquids.
use two concentric or parallel rods and the non conducting liquid rises and falls within the orifice or gap. The change is detected and a signal produced

You will need to choose the probe length in advance.
using this system you can measure to the top of the tank and it is unaffected by foam or turbulence

The probe will give a signal over its length and it will be detected by the controller
the controller will give digital indication, 4 programmeable trip points and a diagnostic trip point to detect cable break and shoirt circuit between the controller and the probe