Search form

Measurement

Coriolis: The Direct Approach to Mass Flow Measurement

March
2013
Back To Basics
Tom O’Banion
Coriolis meters eliminate the need to measure and correct for pressure, temperature, and density fluctuations to determine mass flowrate. Although their capital costs may be higher, they typically have a lower overall cost of ownership than other types of meters

Diagnosing Maldistribution in Towers

May
2007
Reactions and Separations
Simon X. Xu
Gamma CAT-scan technology makes possible the collection of much more vital online process information than conventional diagnostic techniques.

Assess the Performance of Positive-Displacement Pumps

December
2007
Fluids and Solids Handling
AIChE's Equipment Testing Procedures Committee
Here's how to evaluate rotary pumps— gear, lobe, vane and multiple-screw designs— regardless of whether the material being handled is a Newtonian or non-Newtonian fluid.

Use Guided-Wave Radar to Measure Water Level in Steam Loops

December
2012
Back To Basics
Keith Riley , Ravi Jethra
Guided-wave radar (GWR) is a useful tool for measuring water level in steam loops. This article describes GWR design and operation, and how this technology differs from more traditional forms of level indication.

Wireless Measurement & Control

Virtual Local Section Webinar
Aug 25, 2011
Greg McMillan

Wireless measurements reduce wiring installation and maintenance costs and eliminate electrical noise and ground loops.

The Economics of Process Measurements

Apr 2, 2012
Douglas C. White
What is the economic value of a new measuring device in a process plant – a new analyzer, a more accurate flow measurement, an additional temperature or pressure measurement, etc.? Excluding the minimum set of measurements required to safely operate the plant and meet regulatory requirements, how...

Asphaltene Instability Measured by Small-Angle Neutron Scattering

Oct 19, 2011
Michael P. Hoepfner
Asphaltenes are defined as the petroleum fraction that precipitates with the addition of a normal alkane; however, it was only recently discovered that there is a strong time-dependency for precipitation in oil/n-alkane mixtures [1]. It was found that at low precipitant concentrations, asphaltenes...

How Good Are Your Data?

June
2002
Instrumentation
Scott D. Barnicki
Some thoughts on the measurement and interpretation of vapor-liquid equilibrium

The World of Wireless

February
2010
News Feature
Matthew McKeon-Slattery
As wireless technologies have advanced, old limits have been overcome and new challenges have sprung up. Further growth is likely to be driven by specific application and cost-reduction needs. <br>

Selecting In-Process Particle-Size Analyzers

August
2003
Fluids and Solids Handling
Paul Barrett
To select the proper instrument for process monitoring, one must determine what attribute of the particle system impacts the process or product parameter of concern. Once the size region is identified, it can be tracked in-process, opening up the...

Use Multivariable Transmitters to Improve Flow Measurement

October
2010
Instrumentation
Nathan D. Stokes
Advances in multivariable transmitters allow more-accurate and more-repeatable flow measurements to be made over a wide range of conditions. Here’s how to select the device with the right capabilities for your applications.

Pages

Subscribe to Measurement