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With the help of a PLC, the system automatically controls the water level. The PLC receives level data from three level sensors (float switches). The PLC is linked to float switches in the tank, which provide control signals and turn the pump on and off.

Selected Manual Mode, OFF Position, and Low Water Level. Select Manual Mode and adjust the water level between low and high. The Auto Mode has been selected, and the High Level Switch has been activated.

Water is pumped up from the ground tank to the raised tank and then distributed to each floor via the water mains. When the elevated tank's water level falls below a certain level, water is pushed up from the ground tank to replenish it. The pump turns off when the water level reaches a specified level.

To make this circuit you will need:

  • BC 547 Transistor X 3 = 9 INR.
  • 220 K Ohm & 5.4 K Ohm resistors = 1.
  • 1N4007 Diode = 1.
  • 12V relay = 12.
  • One, 3-pin PCD connector & two, 2-Pin PCB connector = 25.
  • Wires = 5.
  • PCB = 12.

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