Simple Water Level Sensor Circuit Diagram. This simple transistor based water level indicator circuit is very useful to indicate the water levels in a tank. Any liquid it will activate the led when the two probes shown in the circuit will detect liquid.
Before starting the design process of this circuit let s give you a brief explanation of the uln 2003 ic. The led will be activated when the liquid is detected through probes. This circuit is using only four components.
We can design the water level indicator circuit using uln2003 ic as the main component.
This is the circuit diagram of a simple corrosion free water level indicator for home and industries. This circuit is using only four components. The circuit diagram is quite simple with only a few components but it can perform a great number of tasks as a monitor for the desired level of any fluid. Working of the circuit is simple the circuit is based on a npn transistor 2n2222 which is working as a switch when water level will touch the two probes the transistor.
