Ultrasonics in Industry

Massa, Frank

doi:10.1109/jrproc.1962.288117

Cited by 5 publications

(1 citation statement)

References 2 publications

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“…Techniques for ultrasonic acoustic investigation of liquid levels in various containers have been in use for over 50 years [1,2]. Typically, these methods transmit a high-frequency short-duration pulse into the system, and record the returned echo signal from the fluid surface with the transit time serving as the indicator of the distance from the acoustic transducer to the surface.…”

Section: Introductionmentioning

confidence: 99%

Measuring the Level of Liquid in a Partially-Filled Pipe Via the Ultrasonic Pulse-Echo Method Using Acoustic Modeling

Smith

Bomar

Whitehead

2011

2011 21st International Conference on Systems Engineering

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A method for measuring the level of liquid in horizontally oriented pipes was designed, developed and tested. A circuit custom-built for this purpose was used to generate modulated ultrasonic pulses that were applied to a piezo-electric transducer that was used both to launch the acoustic signal and record the returned echoes. The return signal was digitized and transmitted wirelessly to a remote computer for processing where the fluid level measurement consisted of comparing the acquired signal with a simulated signal based upon a model of acoustic wave propagation through the media comprising the set up using crosscorrelation with the liquid depth as the free parameter. Laboratory experiments performed with this technique on a steel pipe have shown that it is capable of measuring fluid levels with errors less than 5 mm. Tests on other pipes have been performed, although results were not as accurate. A field test on a pipe in a water tunnel facility successfully determined the presence and absence of liquid in a noisy environment.

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Section: Introductionmentioning

confidence: 99%