PLC based Multichannel Automatic Liquid Level Controller aims to control the level of liquid automatically so that water going waste due to overflow of tanks can be saved easily.
In this project , Two liquid level sensors are provided for overhead tanks and source tanks. Those liquid level sensors are low level sensors and high sensors. These sensors sense the level of liquid and operate relays and serves inputs to Programmable Logic Controller (PLC). Programmable Logic Controller (PLC) is programmed to control liquid level and maintain it at specific level in overhead tanks automatically.