An ultrasonic flow meter is a meter that measures the flow by detecting the action of fluid flow on an ultrasonic beam (or ultrasonic pulse).
Fluid velocity is measured by sending an ultrasonic pulse from an upstream transducer to a downstream transducer and back again.
The measured difference in the amount of time that each pulse takes to traverse the pipe is directly proportional to the mean fluid velocity.
Ultrasonic flow meters use this measured velocity to calculate the liquid flow rate based on user-entered information about the process application.
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