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This issue sponsored by Spitzer and Boyes, LLC

April 2013

Radar Contact Level Measurement (Part 2 of 2)

Radar energy travels almost exclusively in the probe and that its speed is not dependent upon the pressure, temperature, or composition of the fluid. In this sense, varying operating conditions should not affect the performance of these level measurement systems. However, the dielectric constant of some materials can vary with its operating conditions, such as composition and temperature. Therefore, this technology may not be appropriate if the dielectric constant of the material can fall below the minimum requirements for the instrument to operate properly. click for more...

The Effects of Piping Run on Measurement

At the American Water Works Association (AWWA) Conference in Anaheim, CA, in June, I was speaking with an old friend about flow and flow metering. "Why is it," he asked, "that I have so much trouble with applications for flowmeters?" It's a good question. People keep making the same mistakes, over and over, and the performance of the flowmeters they install suffer for it. click for more...

Flowmeter Straight Run

When first exposed to flowmeters, I was told that flowmeters require straight run consisting of 10 diameters upstream of the flowmeter and 5 diameters downstream of the flowmeter. Myths such as this, and other similar rules of thumb, abound in a world where details are things to avoid because they just seem to get in the way. click for more...



In addition to over 35 years of experience as an instrument user, consultant, and expert witness, David W Spitzer has written over 10 books and 250 articles about flow measurement, level measurement, instrumentation, and process control. David (with Walt Boyes) is the author of seven Consumer Guides to various industrial flow and level technologies. David teaches his flow measurement seminars in both English and Portuguese.

Spitzer and Boyes, LLC provides engineering, technical writing, training seminars, strategic marketing consulting, distribution consulting, and expert witness services worldwide, and can be contacted at +1.845.623.1830 or www.spitzerandboyes.com.


ISSN 1538-5280
©2013 Spitzer and Boyes, LLC
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