Liquid level sensor using ultrasonic Lamb waves.

@article{Sakharov2003LiquidLS,
  title={Liquid level sensor using ultrasonic Lamb waves.},
  author={Vladimir Sakharov and S. A. Kuznetsov and Boris D. Zaitsev and Iren E. Kuznetsova and Shrinivas G Joshi},
  journal={Ultrasonics},
  year={2003},
  volume={41 4},
  pages={319-22}
}
This paper describes a novel, noninvasive method for measurement of liquid level in closed metal tanks that are under high pressure. It is based on the use of ultrasonic Lamb waves propagating along the tank wall. Contact with liquid substantially changes the characteristics of these waves and this can be used as an indicator of liquid presence. Theoretical analysis shows that the symmetric and antisymmetric Lamb wave modes, both fundamental and higher order, are sensitive to presence of the… CONTINUE READING
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