An ultrasonic flow meterUltrasonic Measurement uses sound waves to interrogate the fluid or object and determine various key properties. The sound waves are typically sent and received by a piezo electric transducer which… measures the velocity of a fluid with ultrasound to calculate volumetric flow.
Using ultrasonic transducers, the flow meter can measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and against the direction of the flow or by measuring the frequency shift from the Doppler effect.
Ultrasonic flow meters are affected by the acoustic properties of the fluid and can be impacted by temperature, density, viscosity, and suspended particulates depending on the exact flow meter.
They vary greatly in purchase price but are often inexpensive to operate and maintain because they do not use moving parts, unlike mechanical flow meters.
How it Works
Ultrasonic flow meters measure the average velocity along the path of an emitted beam of ultrasound, by averaging the difference in measured transit time between the pulses of ultrasound propagating into and against the direction of the flow.
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Ultrasonic flow meters can either be single or dual path dependent on installation requirements and operating conditions.
No case study available at this time.
Ultrasonic Measurement uses sound waves to interrogate the fluid or object and determine various key properties. The sound waves are typically sent and received by a piezo electric transducer which converts electric signals to pressure waves and vice versa. In most flowmeters, the ultrasonic signals are used to precisely measure downstream and upstream transit times in a pipe. Transit time is then converted to a flow rate. The transit time also allows accurate determination of the gas sound speed, which in turn enables further properties to be calculated such as molecular weight.
