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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

September 2010

Ultrasonic Flowmeter Applications (Part 2 of 2)

Straight run requirements for ultrasonic flowmeters are not excessive, so this technology can be applied where limited straight run is available. Applications where the velocity profile changes with the flow rate can cause erratic operation of some ultrasonic flowmeters. click for more...

Calibration Variables:
Positioning Diaphragm Seals on DP Level Transmitters

Differential-pressure level transmitters with diaphragm seals are often calibrated in the instrument shop -- especially prior to initial installation. To simulate the actual installation in the instrument shop, the diaphragms should be mounted at different elevations that correspond to the actual installation to calibrate the transmitter. click for more...

The Weight of Water

What is the approximate weight of the water in a full vertical cylindrical tank that is approximately six feet (two meters) in diameter and 20 feet (six meters) high? Use π (pi) = three for estimating purposes. click for more...

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