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DAVID W. SPITZER'S E-ZINE

TECHNICAL AND MARKETING SERVICES
FOR INSTRUMENTATION SUPPLIERS AND END-USERS

This issue sponsored by Spitzer and Boyes, LLC

June 2014

Why Measuring Flow is a Difficult Task: Damping the Signal (Part 2 of 2)

Another alternative is to implement damping in the flowmeter and in the control system. The amount of damping installed in the flowmeter should be relatively small to attenuate the higher frequency flow noise. The signal should be of sufficient quality to use for recording purposes and might still "paint" a small band on a chart. A small amount of additional damping may be added in the control system. click for more...

Part II: Considering a Large-Line Orifice Plate Flowmeter
How Much Straight-Run Pipe Is Really Needed to Produce the Desired Results?

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. click for more...

QUIZ CORNER: Piping Orientation for Solids-Laden Water Flow

What piping orientations are acceptable for flowmeters to measure the flow of water with 10 percent solids? 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.