It is best practice to follow a formal recipe when designing and tuning a PID controller.
A recipe lets us move a controller into operation quickly. And in most all cases, the final performance will be superior to a controller tuned using an intuitive approach or trial-and-error method. Additionally, a recipe-based approach causes less disruption to the production schedule, wastes less raw material and utilities, requires less personnel time, and generates less off-spec product.
Integrating (or non-self regulating) processes display counter-intuitive behaviors that make them surprisingly challenging to control. In particular, they do not naturally settle out to a steady operating level if left uncontrolled.
So while the controller design and tuning recipe is generally the same for both self regulating and integrating processes, there are important differences...(there's more)...
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Doug Cooper, Editor,
"Proven Methods and Best Practices for Automatic Process Control"