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  • 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
  • Blind Transmitters: A return to the basics

    Analog transmitters easily send process measurements from different areas in a plant to a central PLC where process control decisions can be made based on transmitter feedback. Analog transmitters are great cost-saving alternatives to single-point controllers. In situations where multiple sensing locations are required, single point controllers’ costs can add up quickly.

  • 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.

  • 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.
  • Monthly Preview: December 2007

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

  • Do some heavy thinking about light loads

    Cutting steam demand can get you into hot water, advises Contributing Editor Andrew W. Sloley, contributing editor, in this month's Plant InSites column.

    Andrew W. Sloley, contributing editor
  • Equipment & Services: October

    Chemical Processing's Equipment & Services feature provides a variety of production equipment, supplier services and parts.

  • Biofeedstocks see real growth

    Economics as well as increasing corporate emphasis on sustainability and environmentally friendly products are spurring the use of biofeedstocks to make chemicals and fuels.

    C. Kenna Amos, contributing editor
  • Exceed environmental expectations

    The chemical industry is making environmental progress but needs stretch goals, says Mark Rosenzweig, in this month's From the Editor column.

    Mark Rosenzweig, Editor in Chief
  • Wireless proponents take HART

    More chemical plants are expected to go wireless with the introduction of the new wireless protocol for HART devices.

    C. Kenna Amos, contributing editor
  • Get the right cartridge or bag filter

    An inaccurately sized or improperly specified filter can undermine an entire high-performance liquid filtration system. There are a dozen key parameters to assess to determine the proper specification.

    Tim Mills, Kaydon Custom Filtration Corp.
  • Avoid blending blunders

    Selecting the correct device is crucial to successfully handling solids. It must deal with discrete pieces that have physical size, electrical properties, frictional differences and surface characteristics that can change with the environment.

    Tom Blackwood, Healthsite Associates
  • Correct those disturbing lapses

    Keeping liquid in a reflux drum still can prevent problems, says Andrew Sloley, in this month's Plant InSites column.

    Andrew Sloley, contributing editor
  • 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
  • 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.

  • China teems with harmful exports

    Problems with Chinese manufacturing go well beyond defective and dangerous products, Mark Rosenzweig, editor in chief, notes in this month's installment of From the Editor.

    Mark Rosenzweig, Editor in Chief
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