Battelle Memorial Institute

Walter C Weimer

Richard A Pappas

David M Sheen

James L Buelt

Brion J Burghard

Don Simone Daly

Scott K Cooley

Kayte M Judd

David M Pfund

Gerald P Morgen

A fluid level monitoring systemincludes an ultrasonic interrogation deviceacoustically coupled to a sidewallof containerand produces ultrasound that travels through the liquidalong a transverse pathand an inclined path. The liquid level is determined by calculating the times-of-flight for the received return signals, where the return signal along the inclined pathreflects from the intersectionof the liquid leveland a sidewall. The devicecan be a multi-element transducer having a plurality of transducer elements at different angular orientations in a common housing.

Ultrasonic fill level device and method

A pair of multi-frequency ultrasound transducer surround a fluid flow and are configured to operate under computer control in both a mono-static and a bi-static mode at each of the multiple frequencies. In the mono-static mode, pulsed wideband Doppler shift measurements provide the velocity profile across the fluid flow which can be combined with measured pressure drops to determine the rheogram&#x2014;a plot of shear stress versus shear rate. Velocity profile data from each frequency can be combined to form a composite velocity profile. In the bi-static mode, transmission data is collected that improves the accuracy and robustness of the velocity profile and provides supplemental material property information. The system is configured for automated operation for a wide variety of fluid types and can be reconfigured and/or monitored remotely.

Ultrasonic system and technique for fluid characterization

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Richland, WA, United States of America

Walter C Weimer