International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 03 Issue: 07 | July-2016 www.irjet.net p-ISSN: 2395-0072 © 2016, IRJET ISO 9001:2008 Certified Journal Page 2190 Automatic Fluid Level Control Using Programmable Logic Controller Gebremaryam Alem 1 , Dr.Krishnanaik Vankdoth 1 Asst.Lecturer, ECED Dept. Aksum University, Aksum Email: alemgere1990@gmail.com 2 Associate Professor, Aksum University, Aksum, Email: krishnanaik.ece@gmail.com ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - A Programming Logic Controller is a digital computer used for automation of the electromechanical process. It is used to convert the previously used relay logic or wired logic for automation of an industrial process into ladder logic. It is used automate respective process but in this project Siemens LOGO is used which lie in the cheapest category or entry level of PLC. This paper deals with Automatic Fluid Level Control Using Programmable Logic Controller in Alameda Textile Factory. Currently Almeda Textile Factory is used conventional relay control system to control level of fluid, however there are a lot of limitations , such as wastage , large no of labors, and difficult to maintained . In order to minimize those problems, We have tried to make Automatic using PLC. Electronic device used in my project are As sensor - switch, level sensor (limit switches) , As controller :-PLC and pump motor, solenoid valve. Having the above device, I have also programmed using Ladder logic diagram In LOGO SOFTCOMFORT Software and stimulate in order to load to PLC Key Words: PLC, Control System, Tankers, Fuel, Solenoid Valve, PLC Controller, 1.INTRODUCTION In this Paper the Controlling of fluid level tank is crucial mechanism in our day to day activity. In Almeda Textile Factory it is common to observe that plentiful fluid is wasted from the tank. The project DzAutomatic fluid level control with an automatic pump control system Dzis designed to monitor the level of liquid in the tank .The system has an automatic pumping system attached to it so as to refill the tank once the liquid gets to the lower threshold, while offing the pump once the liquid gets to the higher threshold. Sustainability of available water resources in many reason of the of the world is know dominant issue .This problem is quietly related to poor water allocation ,inefficient use lack of adequate and integrated water management .Water is commonly used for agriculture ,industry and domestic consumption. Therefore, efficient use and water monitoring are potential constraint for home or office water management system. More over the common method of level control for home appliance is simply to start the feed pump at a low level and allow it to run until a higher water level is reached in the water tank. This water level control, controls monitor and maintained the water level in the over head tank and ensures the continuous flow of water around the clock without the stress of going to switch the pump on or off thereby saving time, energy, water and prevent the pump from over working besides this, the liquid level control system are widely used for monitoring of liquid levels in reservoirs, silos. Proper monitoring is needed to ensure water sustainability is actually being reached with displacement linked to sensing and automation, such a programmatic approach entails PLC based automated water level sensing and controlling. In order to ensure safety in production and quality of products, effectively and timely control of liquid level is necessarily in the previous industry people control liquid level through a fixed liquid level switch .When liquid level is up to certain height, the switch is automatically closed or disconnected to control water level .But now we are controlling the liquid level automatically by using PLC, sensor, motor and valves. Water level control is equipment used to control the water level in a field .The water level is control using different components like PLC, sensors, motor and valves. The sensors sense the presence of water and give indication to the PLC .The PLC produce control signal to drive the motor .If there is no water content the PLC give signal to start the motor and if there is sufficient water in the field the PLC give signal to stop the motor. It also prevent <<dry run>> of the pump incase the level in the tank goes below the suction level. A PLC or programming logic controller is a digital computer used for automation of the electromechanical process. It is used to convert the previously used relay logic or wired logic for automation of an industrial process into ladder logic. It is used automate respective process but in this project Siemens LOGO is used which lie in the cheapest category or entry level of PLC. The reason of it been cheap is that it has limited number of input and output ports .In this project automation of water tank is achieved by using pressure switch as level sensor in order to set a low level and high level inside the tank. 1.1 General objective The main purpose of the project is to maintain water in a desire level to any control system. PLC is used in this project as an Automation tool to reduce manual operation and get better accuracy.