Void/particulate detector

Patent · Tue Sep 24 04:00:00 EDT 1985

OSTI ID:5675606

Clayton, T N; Karplus, H B

Voids and particulates are detected in a flowing stream of fluid contained in a pipe by a detector which includes three transducdrs spaced about the pipe. A first transducer at a first location on the pipe transmits an ultrasonic signal into the stream. A second transducer detects the through-transmission of the signal at a second location and a third transducer at a third location upstream from the first location detects the back-scattering of the signal from any voids or particulates. To differentiate between voids and particulates a fourth transducer is positioned at a fourth location which is also upstream from the first location. The back-scattered signals are normalized with the through-transmission signal to minimize temperature fluctuations.

• Assignee: The United States of America as represented by the United States Department of Energy
• Patent Number(s): US 4542644
• OSTI ID: 5675606
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
BACKSCATTERING
DESIGN
DETECTION
MEASURING INSTRUMENTS
PARTICLES
PARTICULATES
SCATTERING
SOUND WAVES
TRANSDUCERS
ULTRASONIC WAVES
VOIDS
WAVE PROPAGATION