DESIGN AND CONSTRUCTION OF AN AUTOMATIC CONTROL OF WATER LEVEL IN AN OVERHEAD TANK, HAVING ALA~MS AND CONTROL BACKUP FOR REFILLING FAILURE

Abstract

The project is a system designed to monitor the minimum and maximum level of liquid in a tatlle It gives a signal to activate a tap when the liquid level falls below its maximum level and stops refilling when it reaches its maximum level. A red light emitting diode (LED) is switched on when it reaches its minimum level, and a green LED is switched on when it reaches its maximwn level. And yellow LEDs are used to indicate the water levels in the tank. At a point below the minimum level, atl alarm is activated in case the pump fails to refill, atId at a point above the maximum level, another alarm is activated in case the pump does not stop refilling. However, where the maximum alann point fails or is exceeded, the control backup switches the pump off.