Articles

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  • Remember the old reliable orifice plate

    The cost-effective dP flow meter is ideal for utility surveys, Senior Editor Dirk Willard says in this month's Chemical Processing Field Notes column.

    Dirk Willard, senior editor
    09/11/2006
  • Measure your progress

    How well do you know your measurement uncertainties? Find out with this 15-item quiz from Dr. Gooddata.

    Ronald H. Dieck, Ron Dieck Associates, Inc.
    06/19/2006
  • 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
  • Get a handle on solids’ flow

    Properly accounting for how bulk solids actually will flow in a vessel or overall process can be crucial for successful operations. Learning some simple parameters can often provide a good sense of flowability.

    Don McGlinchey, Glasgow Caledonian University
    05/22/2006
  • 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
  • Flow metering gets more fluid

    There are more and more funcationalities being added to your most trusted instrumentation. These established technologies have expand their reach and performance.

    Mike Spear, editor at large
    01/09/2006
  • Flow Meter Focus

    ChemicalProcessing.com introduces Flow meter focus, a compilation of useful articles, news, white papers and product information related to flow meters.

    09/28/2005
  • Make the most of HART-enabled field devices

    HART-enabled field devices offer many benefits and not just for process control. They can lead to productivity gains, maintenance savings and more efficient and accurate recordkeeping.

    Dan Prugar, Meriam Process Technologies
    08/11/2005
  • Software Drives OEM Toward Efficiency and Energy Savings

    ABB designed software for its ACS800 drive so Curtis-Toledo could improve the operation of its rotary-screw compressors. The customized software can control the system pressure, air delivery, oil temperature and duty cycle directly from the drive.

    John Wilmes, ABB Inc.
    06/23/2005
  • Process Engineering: HART Offers Value in Plant Control Systems

    There's a myth in plants that HART offers little for Plant Control Systems and Enterprise Level Networks. But Ed Ladd from the HART Communication Foundation writes that by accessing the data in HART devices on a "full-time" routine basis increases performance, integrity, and reliability of plant control and enterprise level systems.

    Ed T. Ladd, Jr., HART Communication Foundation, Austin, Texas
    05/11/2005
  • Process engineering: Doing your level best

    Plant engineers who find it is difficult to get good level measurements have plenty of company. A recent poll shows that it is considered to be one of the two most vexing problems by process automation professionals.

    04/08/2005
  • Fieldbus technology: Cut through the confusion

    Fieldbus technology offers many benefits to a chemical processor if used correctly. The key is to focus on front-end design to achieve the full benefits of fieldbus technology.

    Ian Verhappen, P.Eng., ICE-Pros
    03/10/2005
  • HART Devices - Dispelling the Myths

    Myths and misconceptions surround the HART Communication technology despite being in use for as many as 15 years in some places. This article dispels those myths and highlights the benefits of HART.

    Ed T. Ladd, Jr., HART Communication Foundation, Austin, Texas
    03/10/2005
  • Process Engineering: Measure problems on a higher level

    A reader has a level measurement problem with a differential pressure level transmitter. The transmitter does not track the level properly. Check out the question and the in-depth answer in this contribution from ControlGlobal.com.

    03/03/2005
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