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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

March 2011

Non-Contact Level Measurement (Part 1 of 2)

Non-contact level measurement systems include laser, non-contact radar, and ultrasonic level measurement technologies. In general, these level measurement systems consist of a level sensor located above the material surface that emits a signal and processes the returns (reflections) of that signal. click for more...

Of Turndown & Velocity
What Flowmeter Turndowns Mean In Terms of Flowrate

Flowmeters are often sized such that the liquid velocity at full-scale flow is approximately 2-3 meters per second. A turndown of 10-to-1 implies that a typical flowmeter will operate properly from (say) 0.25 to 2.5 meters per second. click for more...

Matching the Transmitter to Maximum Capsule Span

A primary flow element generates 0-150 inches of water column differential at maximum flow. Presuming similar design and manufacture, which of the following capsules, with the following (hypothetical) maximum spans, should be selected? click for more...

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