Water Level Controller Circuit Diagram With Dry Run Protection. Build a simple water level control. Fully automatic water level controller cum indicator with motor dry run protection.
Turns off the motor when there is no flow of water into the overhead tank. With this gsm based control you can turn on and off the pump and also the circuit acknowledges about the pump dry run issue. It is built around 5v regulator 7805 ic1 timer ne555 ic2 transistors bc547 t1 and sl100 t2 a 12v 1c o relay rl1 and a few other components.
It also prevents dry run of the pump in case water level in underground tank goes below suction level.
It also prevents dry run of the pump in case water level in underground tank goes below suction level. Automatic water level controller circuit with dry run protection for sump and overhead tank using single npn transistor and ball type float switch. The circuit consists of ac to dc converter using 9v transformer bridge rectifier a smoothing capacitor of 1000 uf and a lm7809 9v regulator. Fully automatic water level controller cum indicator with motor dry run protection.
