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Posts Tagged ‘Mark Coughran’

Improving Jacket Heating and Cooling Temperature Control

Posted in Process Optimization, Support Services on Wednesday, January 30th, 2019. No comments yet
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In many specialty chemical and pharmaceutical batch processes, you’ll find classic cascade and split-range control strategies used on vessel jacket heating and cooling. I caught up with Emerson’s Mark Coughran on a recent visit that he and Guillermo Bravo had taken to a plastics manufacturing facility. They were having issues with the jacket temperature control that […]

When Tuning PID Alone is not the Answer

Posted in Process Optimization on Monday, September 10th, 2018. No comments yet
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Proportional-Integral-Derivative (PID) control is the workhorse control algorithm for process manufacturers. When tuned properly, it seeks to move a loop’s process variable (PV) to the setpoint (SP) as quickly as possible without overshoot or instability. But, in some cases, even proper tuning is not enough. External factors such as equipment failures, mechanical performance, or incorrect […]

Award-Winning Article on Tips for Control Loop Performance

Posted in Process Optimization on Friday, October 20th, 2017. No comments yet
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A few weeks ago, I recapped an article by Emerson’s Mark Coughran, Know when to look outside the PID tuning. It turns out that this article was not only filled with the wisdom that Mark has accumulated over the many years as a process control & optimization consultant. It was also award-winning. The International Society […]

Looking Beyond PID Tuning Parameters for Control Performance Issues

Posted in Process Optimization, Variability Management on Tuesday, September 19th, 2017. No comments yet
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When a variability problem emerges in a production process, the first suspect is often to look at the tuning of PID [proportional-integral-derivative] loops. While adjustments can be easily made in most automation systems, this is often not the source of the problem. In an ISA Intech article, Know when to look outside the PID tuning, […]

5 Questions for Process Control Consultant Mark Coughran

Posted in Process Optimization on Wednesday, April 5th, 2017. No comments yet
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Let’s continue our 5 Questions for an Emerson Expert podcast series with Mark Coughran. Mark has decades of experience in process automation and optimization. We’ve shared some of Mark’s experience and client engagements here on the blog. In this podcast, you’ll hear how he started at the control valve in his journey in gaining experience […]