Each process test will typically give a different result in the process dynamics identified and consequential tuning settings calculated. Here we look at the sources of this lack of repeatability, the implications, and what can be done to improve tuning tests.
I have dug deep into my memory to add 21 more items to the list of process, mechanical, and piping design mistakes that have made our job as automation engineers more challenging and in some cases impossible. We learn the most by our mistakes.
I know you're all good and responsible employees and would never spend time at work surfing the Innerwebs, so in the interest of public service, I try to help out. (Hey, that's my story, and I'm stickin' with it.)