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DAVID W. SPITZER'S E-ZINE

TECHNICAL AND MARKETING SERVICES
FOR INSTRUMENTATION SUPPLIERS AND END-USERS

This issue sponsored by Emerson Process Management

MAY 2007

Differential Pressure Flowmeters (Part 3 of 4)

The construction of differential pressure flow transmitters is such that its wetted parts can be made from materials that can withstand corrosion. In typical installations, impulse tubes are installed such that no flow occurs at the transmitter, so abrasion and wear are usually not important concerns. However, abrasion and wear can affect the performance of a differential pressure primary flow element by affecting its geometry. click for more...

Insertion Flowmeter Performance
What Factors Do You Need to Consider?

Insertion flowmeters are small devices, relative to the pipe size, that measure the flow at one location in the flowing stream. Insertion meters are often strategically positioned to measure the flow at a location where the flowrate is equal to the average velocity in the entire pipe, from which the flow in the entire pipe can be inferred. click for more...

A Level Playing Field
Finding a True Measure of Measurement Error

You would think that finding a common denominator by which to compare instrument performance would be straightforward, but it's not. click for more...

 

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