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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

January 2018

The Fundamentals of Variable Area Flowmeters

Most flowmeters have a fixed orifice. Whether they are differential pressure devices, velocity measuring devices or mass measuring devices, the cross-sectional area of the measurement zone stays the same. There is a whole class of flowmeters, though, where the cross-sectional area of the measurement zone changes with the flow rate. These are called variable area flowmeters, and there are several common types: the rotameter, the orifice-and-plug meter and the cylinder-and-piston type. click for more...

Gas Flow in Large Pipes

The number of different flowmeters that can be applied to measure the flows of industrial liquids and gases can be overwhelming. Consider that there are more than a dozen potential flowmeter technologies (each of which has multiple variations and often many suppliers), so as many as 1000 distinct flowmeters could be purchased in some applications. However, some services and applications can preclude the use of most technologies --- leaving only a few options. click for more...

Flowmeters for HVAC

Which of the following flowmeters could reasonably be applied to measure air flow in a heating, ventilation and air conditioning (HVAC) system? 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.

 

ISSN 1538-5280
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