Articles

121-140 of 167 < first | | | last >
  • NeSSI’s success should be a lock

    The New Sampling/Sensor Initiative or NeSSI that replaces tubing, fittings and other hardware in a sampling system with miniature modular components makes sense. Enhancements now in the works should assure its success.

    Mark Rosenzweig, editor in chief
    11/29/2006
  • Avoid trouble with slurries

    Handling slurries (a mix of solids and liquids), should be based on experience and experiments, not theory. Much of the knowledge obtained from pneumatic conveyors and fluidization systems can be used in understanding slurries.

    Thomas R. Blackwood, Healthsite Associates
    11/01/2006
  • 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
  • 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
  • NeSSI tames the communications monster

    The new sampling/sensor initiative (NeSSI) is moving steadily to fulfill its original promise of increased efficiencies, costs-savings, and micro-analytic capabilities despite recent growing pains related to fieldbus.

    Jim Montague, Executive Editor
    09/15/2006
  • Innovations in batching, dosing and weighing

    Challenges brought on by new regulations and technical problems for batching, dosing and weighing have pushed users to find some innovative and surprising solutions beyond our own industry.

    09/05/2006
  • 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
  • Choose the right temperature sensor

    There’s no simple solution to achieving accurate temperature measurement. It’s a combination of knowing the inherent accuracy of particular sensor types, and how environmental factors can create further measurement uncertainty and the sensor calibration techniques available to reduce this uncertainty.

    Cal Swanson, Watlow Electric Manufacturing Co.
    04/24/2006
  • Mind Mixer Mechanical Design

    While most mixers can provide a long service life — for instance, some are still operating after more than 30 years — mechanical problems can shorten life or even break parts. In this article, learn about all the mechanical problems that may befall your mixing equipment.

    David S. Dickey, MixTech, Inc.
    04/18/2006
  • 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
  • Soft sensors win hard jobs

    Virtual instruments are gaining increasing roles — and capabilities — for closed-loop process control.

    C. Kenna Amos, contributing editor
    01/04/2006
  • Don't Let Phase Changes Faze You

    Phase changes in the downstream processing or handling of solids cause many process problems that have inexpensive solutions.

    Tom Blackwood, Healthsite Associates LLC
    10/04/2005
  • Today’s China Syndrome

    The country boasts not just booming exports but a strong desire for the best technology.

    Mike Spear, editor at large
    09/27/2005
  • Build up agglomerate quality

    Several easy-to-use indices related to material flow properties can help to predict and improve an agglomeration process and product quality.

    Kristin O’Quest and Lee Dudley, Diamondback Technology, Inc.
    08/31/2005
  • Innovative corrosion monitoring solutions enhance process optimization

    Sensors now can provide data on both general and localized corrosion that allow corrosion to be treated as a real-time process variable. Using such data effectively can play an important role in optimizing plant operations.

    Dawn C Eden, David A Eden and Russell D Kane, InterCorr International, Inc., Houston, Texas
    08/16/2005
  • Don'’t Get Mixed Up By Scale-Up

    Use this systematic approach to successfully scale-up mixing processes even without geometric similarity.

    David S. Dickey, MixTech, Inc.
    08/04/2005
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