Instrumentation is the science of automated control and measurement. Utilizations of this system be plentiful in industry, modern research, and everyday living. From home thermostats to automobile engine control systems to aircraft autopilots to the manufacture of medical drugs, automation surrounds us. Now, control and monitoring in broad range of industry are based almost all on computerised equipment, which has considerably simplified the control of processes involving multiple variables.
In fact, process instrumentation and control or automation at power plants has become critical to maximising efficiency and availability. The market for process instrumentation and control systems is highly dispersed. There are over a 100 corporates or firms fabricating process control equipment. Of these, more than 75 percent are in the small-degree business sector. Big firms and corporates account for 65 percent of the process control instruments sale. About two-thirds of this market is catered to by local factories, while the scale is catered by imports.