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DAVID W. SPITZER'S E-ZINE
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TECHNICAL AND MARKETING SERVICES
FOR INSTRUMENTATION SUPPLIERS AND END-USERS
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Coriolis mass flowmeters use the properties of mass to measure mass.
In an analogy, when a fixed mass is rotating on a turntable, centrifugal force pushes the mass outward, but there are no forces pushing the mass in a plane tangent to the rotation.
However, if the mass is moving inwards or outwards from the center of the turntable, the radius of rotation changes, and a force (the Coriolis force) is produced in the tangential plane at right angles to the centrifugal force.
This effect can be readily experienced when riding a merry-go-round.
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The purpose of installing a flowmeter system is to measure flow accurately in a reliable manner.
Whereas issues dealing with physical properties, process parameters, electronic features, and interconnections are often considered extensively,
the quantification of the expected measurement quality of the installed flowmeter can be virtually neglected.
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In many situations, there is a right way to do something and a wrong way to do the same thing.
In other situations, the right way is incorrect, and the wrong way is correct.
This may sound confusing, but bear with me as we examine the process of taking a differential pressure transmitter in and out of service.
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Spitzer and Boyes, LLC sells
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ISSN 1538-5280
©2006 Spitzer and Boyes, LLC
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