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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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Pulse repetition ultrasonic flowmeters (sometimes called sing-around ultrasonic flowmeters) also alternately transmit ultrasonic energy into the pipe in the direction and against the direction of flow. In this design, receipt of an ultrasonic pulse triggers the sending of a new ultrasonic pulse.
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In your adventures specifying instrumentation, you have probably encountered sales people who use a number of tactics to avoid answering questions about the specifications of their instruments.
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To verify the approximate operation of a flowmeter, it may be desirable to calculate the amount of fluid in a vessel before and after fluid flows into (or out of) the vessel. Comparing the calculations with the totalized flow can provide a check on the performance of the flowmeter.
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