ONLINE CONTROLLER FOR LEVEL MEASUREMENT

As a final year student in UTP, final year project (FYP) was required to be undertaken, which is a design and/or research-based subject. This report discusses the preliminary research done and basic understanding of the topic, which is ONLINE CONTROLLER for LEVEL MEASUREMENT. Level measurement is the method of determination of the linear vertical distance between a reference point or datum plane and the surface of a liquid or the top of a pile of divided solids. The objective of the project is to simulate and develop online level controller for measurement. The challenge in this project is to develop online monitoring (Graphical User Interface (GUI)) using LabVIEW programming based on the conditions of the level controller itself and to manage a suitable design of the system. The online monitoring with Graphical User Interface (GUI) will ease the operator to analyze the system and at the same time monitor the level of the oil in the vessel. The author was using a differential pressure transmitter as an instrument for this project. The differential pressure transmitter is used to measure a different of pressure and convert it to the level. It was designed for process control applications, these 2-wire transmitters generate a 4-20 mA or 1-5V signal proportional or characterized to the applied differential pressure. This signal can be transmitted over a pair of twisted wires through long distances Lab testing and circuit simulation have done with a model of the system to ensure the online system will work accordingly due to desire objective.