What is process control?
Simply put, process control deals with the science of maintaining the output of a specific industrial process within a desired quality range in an automated way.
A process control system typically involves some sort of feedback loop. The outputs of a process are actively monitored and if they are not within the desired quality range, components of the process, like ingredients, the temperature of materials, or the pressure under which materials are held, are then automatically and appropriately adjusted to get more optimal outputs that are within range.