Articles

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  • Making the most of diagnostics

    Make the most of your diagnostics with this helpul summary from George Buckbee of ExperTune, Inc.

    George Buckbee, ExperTune, Inc.
    02/08/2007
  • Data validation: Jewel in the fieldbus crown?

    Many users and most suppliers to the industry see process availability as the big payout benefit of Foundation Fieldbus (FF) diagnostics — a good portion of it realized through data validation.

    John Rezabek, Contributing Editor
    11/09/2006
  • Keep measurements on the level

    This article looks at six technologies — mechanical floats and displacers, differential pressure, capacitance, ultrasonic, radar, and guided wave radar — that are used most often for automated control, and provides practical guidance for choosing among them.

    Jerry Boisvert, Siemens Energy & Automation
    11/01/2006
  • Outsourcing innovation development

    A new development method may allow breaking away from the pack as companies continue to employ outsource facilities that offer flexibility and foster innovation.

    Chuck Kenney, Pressure Chemical Company
    10/31/2006
  • Boiling water is easy as one, two, three, four

    There’s more to boiler level control than measuring level and adjusting a feedwater valve. Improved measurements and inverse response are just a few of the influences on operating boilers in a reliable manner.

    David W. Spitzer
    09/15/2006
  • Process analysis gains greater online role

    Faster. Smaller. Smarter. Modular. All express the future of process analytics. And un-stoppable describes the ongoing migration of process analytical instruments to continuous, online, field-mounted use at chemical plants.

    C. Kenna Amos, contributing editor
    09/11/2006
  • Energy savings are often disguised as problems

    Carefully managing compressed air can save money. Compressed air is often overlooked in energy studies because many people do not fully understand compressed air equipment, their own system, or what it costs to produce compressed air power.

    Scott Van Ormer and Don Van Ormer, senior application engineers, Air Power USA
    08/18/2006
  • How to select control valves, Part 1

    When it comes to selecting and sizing control valves, the non-commercial chart in this article not only helps you pick the right one for the job, but also serves as a reference tool you can download.

    Béla Lipták, PE, CONTROL Columnist
    08/15/2006
  • Cutting the wires of communications

    Users want wireless, vendors want to sell wireless, so what’s the problem? This article tackles one of the most discussed topics: the use of wireless communications in process automation.

    Walt Boyes, Editor in Chief
    08/15/2006
  • Level transmitter — art not science

    There is much more to setting up a transmitter than a mere equation. Design and control errors can certainly compromise performance. Follow these simple tricks to get it right.

    Dirk Willard
    06/13/2006
  • Keep measurements on the level

    Changes in liquid densities can throw off readings. Plants commonly rely on differential pressure (DP) cells to measure level. Read this month's Plant InSites for advice on how to solve these level problems.

    Andrew Sloley, contributing editor
    04/17/2006
  • Distillation control and optimization, Part 1

    Control columnist Bela Liptak describes the distillation process and PID-based controls, reviews optimization strategies, and shows how advanced controls can cut operating costs of distillation.

    Béla Lipták, PE, Control Columnist
    01/11/2006
  • EDDL enhancements gain momentum

    Several major vendors have now announced plans to fully support enhancements to the electronic device description language (EDDL) used by HART devices, reports Ed Ladd of the HART Communication Foundation. These enhancements will allow users to interact with their intelligent devices in new ways. They ease configuration, even of complex instruments, and support storage of historical data for troubleshooting and diagnostics.

    Ed Ladd
    08/16/2005
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