Process Control Industry is an industry where the process control system is widely used for production of mass processes like paper manufacturing, power plants, chemicals, oil refining and many other such industries. Here the staffs personnel from the central control room to operates complex process.
For instance, if the temperature of the room is heated then it has desired and specific outcome which is needed to maintain and reach a particular temperature, say 20°C and is kept constant throughout. The temperature over here is known as controlled variable. To read inputs well known device is used which is known as Programmable Logic Controller. It is also used to generate digital analog outputs. Programmable Logic Controller output neither close nor open the valve of hot water. The complex system are controlled by Distributed Control System.
Process control system is divided into 3 parts. They are:
1. Batch Form
2. Continuous Form
3. Discrete Form