Spitzer and Boyes, LLC Website

DAVID W. SPITZER'S E-ZINE

TECHNICAL AND MARKETING SERVICES
FOR INSTRUMENTATION SUPPLIERS AND END-USERS

This issue sponsored by Spitzer and Boyes, LLC

July 2014

Why Measuring Flow is a Difficult Task: Profile Effects

Pipe hydraulic problems are among the leading causes of flowmeter problems. Flowmeters are designed to operate in piping where the flow entering the flowmeter exhibits a homogeneous and symmetrical velocity profile. click for more...

Part III: Considering a Large-Line Orifice-Plate Flowmeter
How much straight-run pipe is really needed to produce the desired results?

In the last two months, I described an e-mail 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. click for more...

QUIZ CORNER: Piping Orientation for Water Flow with Non-Condensable Gas

What piping orientations are acceptable for the flowmeter to measure water that may contain non-condensable gas in volumes up to (say) one-half percent? click for more...

ABOUT SPITZER AND BOYES, LLC

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.