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About Doppler Meters

Doppler ultrasonic flowmeters send an ultrasonic signal across the pipe.  However, instead of sending it to a receiver on the other side of the pipe, the signal is reflected off particles traveling in the flowstream.  These particles are traveling at the same speed as the flow.  As the signal passes through the stream, its frequency shifts in proportion to the mean velocity of the fluid. A receiver detects the reflected signal and measures its frequency. The meter calculates flow by comparing the generated and detected frequencies.  Doppler ultrasonic flowmeters are used with dirty liquids or slurries, where they compete with magnetic flowmeters.


Learn more about New Technology Flowmeters:


For further information, please see www.FlowUltrasonic.com and www.UltrasonicFlows.com.


 
 
Flow Research, Inc. | 27 Water Street | Wakefield, MA 01880 | (781) 245-3200 | (781) 224-7552 (fax) | (800) 245-1799 (from the USA) | info@flowresearch.com

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