Simple Water Level Indicator

Description

Simple Water Level Indicator Using Transistor is easy to build four led for indication of levels in sequence also a buzzer is used to indicate overflow condition. To use this kit's attach the six wires or probes in the water tank at your desired level. The LED will light up when water will touch these six wires and then it will indicate the level of water (By lighting the LED one by one).

The Water Level Indicator Kit consisting of 6 sensing probes that are dipped in water to sense the level of water. Probe A is connected as common to the other five, which should be at the bottom-most part of the water tank, also act as a reference level. The probes B, C, D, E, and F are set as levels. Mount it inside your home with the indicator LEDs pointing out of the box. A short length five, wires can be used as sensing probes and for common sensor Probe A. When the water in the tank touches probes A and B both, a small current flows from A to B through water and to the base of transistor T1.

As a result, the Water Level Indicator Kit's transistor conduct causes the led D1 to glow. Similarly, when water touches sensor C, led D2 glow. Finally, when the water touches sensor F, the buzzer starts to beep which is indicated to overflow condition.