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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

JUNE 2008

Ultrasonic Flowmeters (Part 2 of 4)

In Doppler ultrasonic flowmeters, ultrasonic energy is transmitted into the pipe. Some of this energy is reflected by particles, bubbles, and eddies in the flow stream. The frequency difference between the transmitted energy and its reflected ultrasonic signal is used to determine the flow in the pipe. click for more...

Measuring Flow Below Atmospheric Pressure:
Key Considerations for Gas & Liquid Applications

For the past few installments of "Applications Corner," we’ve been considering some unique applications that I’ve run into over the years. Last month we examined instrument selection for below absolute zero pressure. This month we’ll consider how processes that operate at pressures below atmospheric pressure impact flow measurement. click for more...

Effects of Upstream Piping Configuration on Flow Measurement

Most flowmeters are sensitive to the upstream and downstream piping in which they are installed. They are especially sensitive to the upstream piping, so much so that many discussions only focus on the upstream piping, even though both can be important. click for more...

 

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