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Ultrasonic flow meter using mode coupling transducers.

Shrinivas G Joshi1

  • 1Department of Electrical and Computer Engineering, Marquette University, Milwaukee, WI 53233, USA.

Ultrasonics
|June 19, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces a novel ultrasonic flow meter utilizing mode coupling transducers (MCTs). The developed prototype accurately measures fluid flow rates across a wide range, from 0.2 to over 100 liters per minute.

Keywords:
Plate acoustic wavesUltrasonic flow meterUltrasonic transducers

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Area of Science:

  • Engineering
  • Materials Science
  • Physics

Background:

  • Traditional flow meters face limitations in accuracy and range.
  • Development of non-invasive flow measurement techniques is crucial for various industries.
  • Piezoelectric transducers offer potential for advanced sensor applications.

Purpose of the Study:

  • To develop and characterize a novel ultrasonic flow meter.
  • To investigate the efficacy of mode coupling transducers (MCTs) for fluid flow measurement.
  • To establish the performance of the prototype across a broad range of flow rates.

Main Methods:

  • Fabrication of mode coupling transducers (MCTs) on lithium niobate plates.
  • Utilizing interdigital transducers (IDTs) for generating and detecting plate acoustic waves.
  • Mounting two MCTs on opposite pipe walls for non-invasive flow sensing.
  • Testing the prototype flow meter with flow rates ranging from 0.2 to over 100 liters per minute.

Main Results:

  • Successful development of an ultrasonic flow meter prototype.
  • Demonstrated accurate measurement of flow rates from <0.2 to >100 liters per minute.
  • Transducers operated at a center frequency of 1 MHz using 0.5 mm thick lithium niobate plates.

Conclusions:

  • The mode coupling transducer (MCT) is a viable technology for ultrasonic flow metering.
  • The developed flow meter offers a wide measurement range and non-invasive operation.
  • This technology holds promise for efficient and accurate fluid flow monitoring in diverse applications.