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Related Experiment Videos

Liquid level sensor using ultrasonic Lamb waves.

V E Sakharov1, S A Kuznetsov, B D Zaitsev

  • 1Company "Gazavtomatika", 119435, Moscow, Russia.

Ultrasonics
|June 5, 2003
PubMed
Summary
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A new noninvasive method uses ultrasonic Lamb waves to measure liquid levels in high-pressure metal tanks. This technology offers a reliable solution for industrial applications, particularly in demanding environments.

Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Physics

Background:

  • Accurate liquid level measurement in closed, high-pressure metal tanks is critical for industrial safety and efficiency.
  • Traditional methods can be invasive, costly, or unsuitable for extreme conditions.
  • Existing noninvasive techniques may lack the required sensitivity or robustness.

Purpose of the Study:

  • To develop and validate a novel, noninvasive method for measuring liquid levels in high-pressure metal tanks.
  • To investigate the use of ultrasonic Lamb waves for real-time liquid level detection.
  • To assess the feasibility of this method in challenging industrial settings.

Main Methods:

  • Theoretical analysis of ultrasonic Lamb wave propagation along tank walls.

Related Experiment Videos

  • Utilizing the sensitivity of Lamb wave characteristics to liquid presence.
  • Development and testing of a prototype sensor with wedge transducers.
  • Optimization of operating frequency based on tank wall properties.

    • Main Results:

    • Both symmetric and antisymmetric Lamb wave modes are sensitive to liquid presence.
    • An optimal operating frequency of 100 kHz was identified for tank walls of 30-50 mm thickness.
    • A prototype sensor demonstrated successful operation in oil fields.
    • The method proved effective for noninvasive liquid level measurement.

    Conclusions:

    • Ultrasonic Lamb waves provide a viable noninvasive method for liquid level measurement in high-pressure tanks.
    • The developed prototype sensor shows practical applicability in industrial environments.
    • This technique offers a robust and reliable alternative to conventional level measurement systems.