Design and construction of liquid level indicator with alarm at maximum level 0f the liquid.

Abstract

This research was aimed at designing and constructing a liquid level indicator with alarm which helps in minimizing the increasing costs of liquids when there is wastage day to day in the liquid containers. We all know that liquids such as water is very precious to us. This problem can be controlled by a simple electronic circuit consisting of some cheap electronic components. The operation of the liquid level indicator with alarm works upon the fact that some liquids like water, oils conducts electricity. Such liquids are used to open or close a circuit. As the liquid level rises or falls, different circuits in the controller send different signals. This signal gives a clear indication of liquid in a container. Liquid Level indicator with alarm is a simple low cost circuit, there the circuit is made with various components like transistors(BC547), Resistors, LEDs and others.