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  • Video: Configuration Issues for PID Blocks in Alternate Control Configuration

    When blocks such as summers, selectors, etc., are inserted between the output of the PID block and the final control element, some configuration issues must be addressed for the PID block.

     

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Houston, a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/17/2015
  • Video: Characterization Function for Implementing Ratio Control

    The control configuration proposed in the previous video included a characterization function whose purpose can be stated as follows: Given a value for the fuel gas valve opening, determine the fresh air damper opening required to give a hot air temperature of 210°C. The focus of this video is obtaining data points for this characterization function.

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Houston, a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/09/2015
  • Video: Ratioing Fresh Air and Fuel Flow to Furnace

    The scrubber duct inlet temperature controller adjusts the opening of the fuel gas valve. Opening only the fuel gas valve affects the hot air temperature. To increase the heat input at a constant hot air temperature, both the fuel gas valve and the fresh air damper must open. This video presents a ratio control configuration that enables the scrubber duct inlet temperature controller to simultaneously change the openings of the fuel gas valve and the fresh air damper, the objective being to minimize the effect on the hot air temperature.

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Houston, a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/09/2015
  • Video: Alternate Control Configuration for Off-Gas Process

    The temperature of the hot air is determined by the opening of the fuel gas valve and the opening of the fresh air damper. Based on the process understanding from previous videos, this video proposes alternate control logic for these two final control elements.

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Houston, a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/09/2015
  • Video: Interaction in the Single-Loop Configuration

    This video examines the degree of interaction between the scrubber duct inlet temperature loop and the remaining loops in the single-loop configuration.

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Houston, a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/09/2015
  • Minute Clinic: What Are Human Factors?

    In this Minute Clinic, we answer the question: What are human factors? Dave Strobhar -- founder and principal-human-factors engineer for Beville Engineering – defines human factors and offers sound advice going forward. Dave is also the founder of the Center for Operator Performance.

    Click to listen to this podcast now! Run time is 4:45

    Your browser will provide the player for this podcast. Enjoy.

    Traci Purdum, Senior Digital Editor
    09/08/2015
  • Video: Understanding the Behavior of the Off-Gas Process

    Following a description of the off-gas process, a single-loop control configuration is proposed, followed by a discussion of tuning the individual loops.

     

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Houston, a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here.  http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/01/2015
  • Video: Tuning the Scrubber Duct Inlet Temperature Loop

    This video examines the tuning of the scrubber duct inlet temperature controller. Previous videos examined the hot air pressure, hot air temperature, and the bag house inlet temperature controllers. Our starting point is all previously tuned controllers on auto.

     

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Baton Rouge, La., a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here.  http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/01/2015
  • Video: Tuning the Bag House Inlet Temperature Loop

    This video examines the tuning of the bag house inlet temperature controller.

     

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Baton Rouge, La., a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including “Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net. He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here.  http://www.chemicalprocessing.com/experts/instrumentation-control/

    Cecil Smith, president of Cecil L. Smith, Inc.
    09/01/2015
  • Video: Tuning the Hot Air Loops

    This video examines the tuning of the hot air pressure and hot air temperature controllers. The loops will be tuned in the sequence suggested in the previous video but not as part of plant start-up. Instead, the process is operating and each controller has been previously tuned. The objective is to assess how well each loop is tuned, and make adjustments if appropriate.

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Baton Rouge, La., a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including "Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net.

    He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. 

    Cecil Smith, president of Cecil L. Smith, Inc.
    08/27/2015
  • Video: Single-Loop Control Configuration For Off-Gas Process

    This video presents the single-loop control configuration for the off-gas process. The configuration consists of four loops that must be tuned one at a time. A sequence will be proposed for tuning the loops, but the actual tuning will be the subject of subsequent videos.

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Baton Rouge, La., a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including "Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net.

    He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. 

    Cecil Smith, president of Cecil L. Smith, Inc.
    08/27/2015
  • Video: Introduction Of Off-Gas Process

    The off-gas process is an excellent example of a multivariable process control application. The focus must be on the control issues, not complex process technology that is likely to be proprietary. The simplicity of the off-gas process fits these requirements. The process involves heating air and mixing air streams of different temperatures. But even for simple processes, issues can arise regarding the performance of the process controls.

    To access the entire video series from Cecil Smith, visit our video page.


    Cecil Smith is president of Cecil L. Smith, Inc., Baton Rouge, La., a firm specializing in automation technology that he founded after leaving the faculty of Louisiana State University. Also cited as one of the 50 most influential people in the field, he teaches courses on control topics and has authored or co-authored 14 books, including "Digital Control of Industrial Processes and more than 100 articles. You can email him at cecilsmith@cox.net.

    He is also one of our experts in our Ask the Experts forum. You can pose your instrumentation and control questions to him here. 

    Cecil Smith, president of Cecil L. Smith, Inc.
    08/27/2015
  • Minute Clinic: Staffing Your Console

    In this Minute Clinic, we learn what it takes to staff your console for steady state operation, then design to manage upsets. Dave Strobhar -- founder and principal-human-factors engineer for Beville Engineering and the founder of the Center for Operator Performance will give us the 411 on how to staff like a boss.

    Click to listen to this podcast now! run time is 3:51

    Your browser will provide the player for this podcast. Enjoy.

    Traci Purdum, Senior Digital Editor
    08/17/2015
  • Minute Clinic: Diagrams And Line Labeling

    Diagrams and line labeling could save thousands of dollars when it comes to operator performance. In this podcast, Traci Purdum chats with Dave Strobhar -- founder and principal-human-factors engineer for Beville Engineering. Strobhar notes that an improper lineup could cost not only dollars but contaminate products. You need to have two things to improve accuracy. Listen to this podcast to learn more.

    Click to listen to this podcast now! run time is 5:40

    Your browser will provide the player for this podcast. Enjoy.

    Traci Purdum, Senior Digital Editor
    07/13/2015
  • Minute Clinic: Reduce Emergency Procedures

    In this episode of the Minute Clinic, we talk about how you can reduce emergency procedures by 90%. Dave Strobhar -- founder and principal-human-factors engineer for Beville Engineering – offers his expertise. Dave is also the founder of the Center for Operator Performance.

    The main way to achieve reduction is to condense content. He notes that in a study done with Penn State University, if you look at 40-pages of procedures, there are only four pages of procedures that are unique. This helps in terms of updating procedures – making it a less-daunting task. Listen for more insight from Strobhar.

    Click to listen to this podcast now! run time is 4:35

    Your browser will provide the player for this podcast. Enjoy.

    Traci Purdum, Senior Digitial Editor
    07/06/2015
  • CP Minute Clinic: Rules For Displays

    Enhancing situation awareness is critical to ensure operators can swiftly move on to next steps. There are rules to follow when it comes to displays – and in this episode of Chemical Processing’s Minute Clinic podcast series we will learn those rules.

    This episode features Dave Strobhar – founder and principal human factors engineer for Beville Engineering and the Center for Operator Performance. Dave notes there are only a handful of rules. The first rule: A good display only requires 4 seconds to do its job. A person should be able to answer “is my process ok?” Listen to this short podcast to find out the other rules.

    Click to listen to this podcast now! run time is 7:24

    Your browser will provide the player for this podcast. Enjoy.

    Traci Purdum, Senior Digital Editor
    06/29/2015
  • CP Minute Clinic: Alarm Targets

    Many companies use targets to drive design and that can lead to negative consequences. Additionally, there is no clear definition of how you count what is an alarm. And sometimes all alarms are treated the same. These missteps can lead to disaster. This episode of the Minute Clinic features Dave Strobhar – founder and principal human factors engineer for Beville Engineering and the Center for Operator Performance. One of his suggestions is to not get caught up in the metrics. He also details steps to ensure operators can deal with all levels of alarms.

    Click to listen to this podcast now! run time is 8:46

    Your browser will provide the player for this podcast. Enjoy.

    Traci Purdum, senior digital editor
    05/14/2015
  • CP Minute Clinic: Low-Cost Ways to Improve Operator Decision-Making

    This Minute Clinic episode offers straight-forward solutions to help operators make better decisions. According to Dave Strobhar – founder and principal human factors engineer for Beville Engineering and the Center for Operator Performance – errors occur because operators misdiagnose events. This podcast answers why they are coming to the wrong conclusions and how you can turn it around via a few easy methods.

    Click to listen to this podcast now! Run time is 8:44

    Your browser will provide the player for this podcast. Enjoy.

    Traci Purdum, senior digital editor
    05/14/2015
  • Leadership Focus Podcast: Book Review -- Control System Migrations

    control system migrationsIf you're about to embark on a control system migration project, the best thing you can do is prepare. Indeed, there are many complexities to consider with any migration project. Wanting to help future generations, Daniel Roessler wrote the book, Control System Migrations: A Practical Project Management Handbook (Momentum Press, 2013).

    "As experienced engineers, we aren't doing an effective job passing along the value of our experiences to younger engineers," says Roessler. "Hopefully this book will be helpful . . .  to be a resource where they can gain experience." This handbook proves useful for seasoned engineers, too.

    Roessler tells Senior Digital Editor Traci Purdum the reasons behind his methodology and how readers should use this book. He also reveals his a-ha moments during the writing process and what an optimal migration team should look like.

    Roessler has a Bachelor of Science in Electrical Engineering from the University of Texas at Austin. His career, spanning over 20 years, began as a process control engineer and project manager for an end-user company in the chemical and polymer industries. He also worked as a system integrator and later in business development and marketing positions for several process automation vendors providing hardware, software and automation service solutions to the process industries.

    He is currently a freelance writer and also principal consultant for DANR Consulting. For additional information, email him at info@danrconsulting.com.

    Listen to this podcast now! run time is 12:05

    Your browser will provide the player for this podcast. Enjoy.

    11/07/2013
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