I’m always amazed at the wealth of knowledge and experience exchanged in the Emerson Exchange 365 global user community. One example I’ve been following is in the DeltaV Forum, Fuzzy logic control in DeltaV.
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...
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...
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...
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....
With the emphasis on improving energy efficiency and reducing greenhouse gas emissions, process manufacturers have turned to pneumatic low-bleed and zero-bleed valve positioners. Emerson's Riyaz Ali copied me on an email about a recent article that mentioned a...
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...
In adhesive production processes, coalescers and separators are used to accelerate the separation of immiscible liquid (completely insoluble) dispersions. I learned about this from Emerson's Sudhir Jain and Mark Coughran, who shared a recent visit they made with an...
Social networks have made peer-to-peer knowledge sharing easier and more accessible than ever. Given the challenge of running process manufacturing and production facilities safely, reliably and efficiently, this ability to tap into others' expertise is critical. A...
At the request of a reader who commented on the last post, here is another of the 11 examples that Emerson's Mark Coughran shared in his Emerson Exchange Denver presentation, Solving Pressure Control Loop Problems in Hydrocarbon Processing Plants. The commenter wrote:...
It was great having the weekend to rest and recover from a breathless pace at last week's Emerson Exchange conference. There were so many workshops to see, but with more than 350 from which to choose, I couldn't make them all. Over the next several weeks, I'll recap...
Some of my favorite posts are ones that come out of a string of problem-solving email messages. And so it is with today's post. Emerson's Mark Coughran was recently at biopharmaceutical facility that was having temperature control issues on a reactor vessel. The...
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The opinions expressed here are the personal opinions of the authors. Content published here is not read or approved by Emerson before it is posted and does not necessarily represent the views and opinions of Emerson.