Water Tank Overflow Alarm With Momentary Switch To Turn Off The Alarm and with power and full tank Led indicator.
Author: Manikandan K J
This circuit produces an audible alarm when the water level in a rain or water tank rises above a preset level and overflows. It will sound an alarm whenever the water level reaches the top position in the overhead tank thus it alerts one to turn off the motor to prevent water wastage.
The purpose of this circuit is to detect when there is an overflow of water in a tank and stop it from continuing to rise which would cause flooding. This can be useful in many different places where there are tanks of water like swimming pools, fountains or over head tanks for example.
It has a power indicator and a full tank led indicator apart from the alarm. The power to this device can be kept "on" all the time (24 X 7). We can turn off the alarm sound by pressing the momentary switch. We can use contact type sensors or float switches to sense the water level inside the tank. We can use this circuit in overhead tank, swimming pools, underground sump, aquariums, etc.. to monitor the top level.