Last month, I described an email exchange whereby a large (over 30-inch) orifice-plate flowmeter was being installed with 10 diameters of upstream straight run instead of 20 diameters, as prescribed by ISO 5167. The originator wanted to know if the flowmeter accuracy would be within about 5 percent and if it would be reliable and repeatable.
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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.
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