Articles

281-300 of 408 < first | | | last >
  • Improve control loop performance

    Specification of control valves doesn’t adequately emphasize the very basic requirement that valve position respond in a timely manner or even at all — leading to process variability.

    Gregory K. McMillan, Emerson Process Management
    10/18/2007
  • Signet 8900 multi-parameter controller features modular design

    The Signet 8900 Multi-Parameter Controller takes the concept of modularity to the extreme. Each 8900 is field commissioned with the users specified combination of inputs, outputs, and relays using simple-to-install modular boards into the base unit.

    10/16/2007
  • Become a cyber-security pacesetter

    Today, most plants with control systems must contend with many pressures both to allow access to data and to secure those data.

    Rick Kaun, Matrikon, Inc.
    10/04/2007
  • Monthly Preview: December 2007

    Here's a look at what will soon be featured on ChemicalProcessing.com. Be sure to check back for the latest articles, news and columns before you see it in print.

    10/02/2007
  • Plug cyber-security gaps

    With the new “high risk chemical facilities” federal anti-terrorism regulations, it’s time for the chemical industry to ratchet up its cyber-security efforts. There’s a surge in interest in cyber-subjects such as security certification, defense-in-depth strategies, risk-based planning and improved policies and procedures.

    Seán Ottewell, contributing editor
    08/31/2007
  • Distillation, Part 5: Multiple Products

    In Part 5 of this series on distillation control and optimization, we find that adding a side-stream component to your process gives an additional degree of freedom, but makes it even more essential to not mismatch the variables.

    08/28/2007
  • SP100 Committee Listens to WirelessHART

    The ISA SP100 standards committee was presented with WirelessHART specificationas that were voted on by the HART Communications Foundation’s membership in June 2007.

    08/01/2007
  • Two bulk conveyors prove better than one

    Engineers at EaglePicher Corp. in Quapak, Okla., faced some unique problems in manufacturing high-purity isotopic chemicals and wound up addressing them via a unique solution.

    David Boger, Flexicon Corp.
    07/11/2007
  • DHS aims to lock down security rules

    Expect a final ruling this summer on chemicals covered and some other key issues, warns Lynn Bergeson, regulatory editor.

    Lynn Bergeson, regulatory editor
    07/06/2007
  • Properly protect control systems

    Integrated digital field networks are increasingly popular but pose particular safety and security risks. Fortunately, a number of parallel activities are underway to make integration between automation and business systems effective, safe and secure.

    Ian Verhappen, MTL Instruments
    06/14/2007
  • Squeeze More from Your Motors

    By integrating smart motor control centers that will monitor energy consumption a plant can remove wasteful energy expenditure, prevent unplanned downtime, and improve overall operational efficiency. Recent tax code amendments make these improvements inviting.

    Moin Shaikh, Siemens
    06/07/2007
  • Hardening plants is hard work

    Industry should welcome the new, first-ever federal security rules, advises Editor in Chief Mark Rosenzweig in this month's From the Editor column.

    Mark Rosenzweig, Editor in Chief
    06/06/2007
  • What is taking so long?

    Despite its 30-plus-year history, advanced process control (APC) applications remain few and far between, but it doesn’t need to be that way. Dave Harrold, cofounder of the AFAB Group, reports.

    06/01/2007
  • Get ready to comply with new security mandates

    New anti-terrorism standards require the Department of Homeland Security to identify and regulate "high-risk chemical facilities." These facilities will be subject to a security vulnerability assessment. Where does your plant fit in with these new standards?

    David A. Moore and Dorothy Kellogg, AcuTech Consulting Group
    05/29/2007
  • Control valves for slurry service

    In this installment of Ask The Experts, noted process control authority and CONTROL Columnist Béla Lipták and his cadre of automation experts answer a reader’s question regarding control valves for slurry services.

    05/01/2007
  • Defeat barriers to energy cost control

    Use communications and incentives to overcome “The Competitor Within", advises Christopher Russell in this month's Energy Saver column.

    Christopher Russell, contributing editor
    04/24/2007
  • Final control

    What’s the latest on control valves? Here's a look at the current marketplace for the final element that all control stuff is aimed at—the control valve that produces the end result.

    Walt Boyes, Editor in Chief
    04/17/2007
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