GELCO WATER LEVEL CONTROLLER WIRING DIAGRAM
Water-Level Controller | Full Circuit Diagram with Explanation
The low-level and high-level probes in the overhead tank are marked ‘L’ and ‘H’, respectively. Water-level controller circuit Water-Level Controller Circuit. When there is enough water in the underground tank, probes C and S are connected through water. As a result, transistor T1 gets forward biased and starts conducting.