Industrial processes—such as those in chemical plants, oil refineries, and food processing facilities—rely heavily on process control to regulate continuous variables:
The factor that is altered to control the CV (e.g., the flow rate of cooling water). industrial automation and process control jon stenerson pdf
Operators use HMIs to change setpoints, view alarms, and review historical process data. 2. Fundamentals of Process Control Industrial processes—such as those in chemical plants, oil