Terry Blevins

Author's details

Date registered: April 19, 2011


Terry Blevins has been actively involved in the application and design of process control systems throughout his career. For more than 15 years, he worked as a systems engineer and group manager in the design and startup of advanced control solutions for the pulp and paper industry. Terry was instrumental in the establishment of Emerson Process Management's Advanced Control Program. From 1998-2005, Terry was the team lead for the development of DeltaV advanced control products. He is the Fieldbus Foundation™ team lead for the development and maintenance of the Function Block Specification and editor of the SIS Architecture and Model Specifications. In this capacity, Terry is involved in the movement of Fieldbus Foundation function block work into international standards. Terry is the U.S. expert to the IEC SC65E WG7 function block committee that is responsible for the IEC 61804 function block standards. He is a voting member and chairman of ISA104-EDDL (Electronic Device Description Language) committee and is the technical advisor to the United States Technical Advisory Group (USTAG) for the IEC65E subcommittee. He is also a member of the USNC TAG (IEC/SC65 and IEC/TC65). Terry authored "An Overview of the ISA/IEC Fieldbus," Section 11, Standards Overview, Fifth Edition of the Process/Industrial Instruments and Controls Handbook and coauthored four sections in the Fourth Edition of the Instrumentation Engineer's Handbook, Process Control and Optimization. He coauthored the ISA bestselling book Advanced Control Unleashed. He has 36 patents and has written over 65 papers on process control system design and applications. Terry received a Bachelor of Science in Electrical Engineering from the University of Louisville in 1971 and a Master of Science in Electrical Engineering from Purdue University in 1973. In 2004, he was inducted into Control Magazine's Process Automation Hall of Fame. Presently, Terry is a principal technologist in the future architecture team of DeltaV Product Engineering at Emerson Process Management.

Latest posts

  1. Retirement, Fond Memories — August 11, 2016
  2. Wireless Model Predictive Control Applied for Dividing Wall Column Control — July 4, 2016
  3. Automatic Control: Future Challenges, Solutions, and Systems — June 27, 2016
  4. Industry 4.0 – Standardization Roadmap — March 28, 2016
  5. Wireless Control Foundation – Part 3 — January 18, 2016

Author's posts listings


Control With Wireless – Part 1, Guidelines

At Emerson Exchange 2015 I participated in a technology forum on control with wireless that was organized and moderated by Neil Peterson, Emerson Process Management. In this session the panel discussed various aspect of wireless control application of wireless control. Wireless Control Guideline – Terry Blevins, Emerson Process Management, Austin Dividing Wall Column Control Using …

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Wireless Distillation Column Control

I co-authored workshop on Wireless Distillation Column Control for Emerson Exchange 2015. The workshop presentation was hosted by me, Kurtis Jensen, Emerson Process Management, and Melissa Donahue, a graduate student at The University of Texas at Austin. In the workshop we discuss the control performance that may be achieved using wireless transmitters in liquid and …

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Model Predictive Control Using of Wireless Measurements

For Emerson Exchange 2015 I co-authored a workshop on Process Model Identification and MPC Control of the Dividing Wall Column with Wireless Measurements. The workshop presentation was given by Willy Wojsznis, Emerson Process Management and Bailee Roach, a graduate student at The University of Texas at Austin. In this workshop we show how wireless measurements …

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Process Control Optimization

At Emerson Exchange 2015 I hosted a meet the expert session on process control optimization. The six panel members have a wide variety of experience in the process industy. In this session the expert panel members explored the challenges that are often encountered when using traditional and advanced control techniques to optimize plant operations. The experts …

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Defining an Architectural Framework for the Internet of Things

The ISA104 committee, Device Integration, normally meets via WebEx each quarter. However, once per year we have a face-to-face meeting in conjunction with the ISA Fall Leaders Meeting. This year ISA104 committee met on October 12 at the Fall Leaders Meeting held in Louisville, KY. As part of the ISA104 meeting we review work we …

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Process Control Using Wireless Sensors and Actuators

Over the last 10 years I have worked with a number of technologists from the process industry on various aspects of control using wireless field devices. Much of this work is summarized in the book Wireless Control Foundation – Continuous and Discrete Control for the Process Industry. Recently Mark Nixon (Emerson) and Willy Wojsznis (Emerson), …

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Model Predictive Control With Event Driven Operation

Willy Wojsznis, Mark Nixon and I co-author the paper Model Predictive Control With Event Driven Operation for the “1st European Experts’ Workshop On Emerging Trends In Event Based Systems” . In this paper we address how wireless measurements have been successfully used in the application of MPC in the control of a Divided Wall Column …

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Event Based Control Applied to Wireless Throttling Valves

Willy Wojsznis, Mark Nixon and I co-author the paper Event Based Control Applied to Wireless Throttling Valves for the “1st European Experts’ Workshop On Emerging Trends In Event Based Systems”. In this paper we address the performance achieved in a flow lab using an industrial size prototype wireless throttling valve in closed loop control of …

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Industrial Advances in Wireless and Event Driven Control

Last month Willy Wojsznis and I attended the “1st European Experts’ Workshop On Emerging Trends In Event Based Systems”. This workshop was held on the campus of AGH University of Science and Technology, Krakow, Poland. For this workshop, Willy and I co-authored two papers with Mark Nixon that addressed how event triggered execution is used …

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Invited Talk – FDI, EDDL, and the FieldComm Group

Marty Zielinski, Chair of the FieldComm Group’s Strategic Technology Committee, was the invited speaker for the ISA104 Teleconference Meeting held on March 16th, 2015. In his talk Marty discussed the relationship of the Field Device Integration (FDI) standard, IEC 62769, the EDDL international standard IEC 61804 and the FieldComm group. He noted that as of …

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