The main objective in this study is to control the process variables (water level, temperature and flow control) of PCT 100 machine using PID controller which will be tuned by PSO/GA algorithms. The proposed work is to do automatic tuning of PID controller parameters i.e. KP, KI, KD, by intelligent methods such as GA/PSO. So the problem of tuning the PID parameters manually is eliminated and automatic tuning gives better results.