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 Magnetrol International, Incorporated

April 2012

Fieldbus Field Instruments (Part 1 of 2)

Field instruments are the source of data used to control the process. When they supply data to the control system, they are often called "transmitters," and the data they transmit on the network is called a process variable. click for more...

Part III: Vortex Flowmeter Operating Constraints:
Working Around Minimum Reynolds Number Requirements

The flowmeter measured correctly after its configuration was changed to reflect the physical properties of the actual liquid and the 16-inch pipe in which it was installed. It was then discovered that the flow measurement was unreliable and dropped out because its minimum Reynolds number constraint was violated. What can be done to remedy these problems? click for more...

Accuracy, Repeatability, So What?

In the flow control industry, we hear a great deal about accuracy, repeatability and other means of establishing performance for a flowmeter or a valve, or other flow control device. Unfortunately, most of us are at somewhat of a loss to decode much of the information they are receiving, and so they have the unfortunate experience of either "underbuying" or "overbuying" their flow control products. click for more...

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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.

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