Description
Electrodes work according to the conductive principle in connection with filling level controllers. When the electrodes are immersed into an electrically conducting liquid, a control current will flow through the liquid. Via a measuring amplifier a switching contact will be activated by the controlling current. The current circuit is galvanically isolated from the mains and is operated by protective extra-lowvoltage. In order to avoid an electrolytic effect on the electrodes, they are operated with alternating voltage.
| Depending on the types of electrodes and the filling level controllers in use these controls are suited for |
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| • High level alarm • Low level alarm • Filling up and pumping dry • Controlling with locking • Valve opening / closing with locking and protection against dry running |
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