Electronics and process control systems

A brief history of the development of process control and instrumentation up to existing conventional pneumatic and electronics systems is given and the use of miniaturization, graphic panels and console desks discussed. Two possible future systems of process control are described, one whereby the plant is programmed by punched card input, and the second whereby the plant performance is continuously analysed and monitored by computer. Problems concerning maintenance, safety, choice of components, and other items of importance to process control are discussed.