In a process industry, there are many parameters to be monitored and controlled. In market, controller/monitoring systems are available in small sizes with ON/OFF, P, PI, and PID control action; able to work independently. Actually speaking, the problem starts with this independent decision making. In industry, for 99% cases the physical parameters present are dependent; for example temperature should be 40 oC at the pressure of 20 PSI, flow should be 20 liters per minute for the pressure of 25 PSI, and so on. But the available instruments in the market are independent decision makers i.e....