DAVID W. SPITZER'S E-ZINE - NOVEMBER 2007

Magnetic Flowmeters (Part 2 of 3)
Spitzer and Boyes, LLC

The magnetic flowmeter signal is proportional to the fluid velocity. Therefore, these flowmeters measure velocity, from which the volumetric flow rate is inferred utilizing the first equation, assuming that the cross-sectional area of the conduit is known. Magnetic flowmeter performance is therefore predicated on how well the average fluid velocity is measured and how well the cross-sectional area is known. Uncertainty in the cross-sectional area can degrade the inferred volumetric flow rate measurement... click for more...

Quiz Corner: Organizing Your Flow Investigation
Identifying the Root Cause of Measurement Error
Flow Control

The plant is having operational problems, and you are informed that an existing process gas flowmeter with pressure and temperature compensation appears to be measuring higher than it should. What instruments would you investigate to determine the cause of the problem? click for more...

Of Instrumentation Globalization
New Technology Makes Experienced Engineers Less Important
Control

There are a number of trends in instrumentation (in general) and measurement (in particular) that seem to be converging. Whether this is good or bad can be a matter of opinion... click for more...

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ABOUT SPITZER AND BOYES, LLC

Spitzer and Boyes, LLC sells Consumer Guides for end-users that contain detailed product information and analysis about:

• Coriolis Mass Flowmeters
• Differential Pressure Flow Transmitters
• Magnetic Flowmeters
• Ultrasonic and Correlation Flowmeters
• Vortex Shedding and Fluidic Flowmeters
• Non-Contact Level Gauges
• Fieldbus Equipment for Process Control Networks
• pH and ORP Instrumentation

We also offer seminars on these topics at various locations across the United States