Transducer coupling apparatus for inhomogeneity detector

Details Transducer coupling apparatus for inhomogeneity detector Transducer coupling apparatus for inhomogeneity detector

1981-06-08

1983-07-12

Kreitman, Stephen A.

Measuring and testing

Gas content of a liquid or a solid

By vibration

73644, G01N 2902

Patent

active

043923747

ABSTRACT:
A transducer coupling member for use with systems for detecting inhomogeneities in fluids flowing in a conduit. A first portion of the member is acoustically coupled to the conduit wall. An electromechanical transducer is mounted upon another portion. These two portions are partially acoustically coupled. The composite system forms a bandpass filter which eliminates frequencies and modes of oscillation which travel largely in the conduit, thus preventing the system from being rendered insensitive to inhomogeneities. The bandpass automatically adjusts to accommodate a variety of conduits.

REFERENCES:
patent: 2573390 (1951-10-01), Blanchard
patent: 3046780 (1962-07-01), Liebermann
patent: 3974681 (1976-08-01), Namery
patent: 4014211 (1977-03-01), Araki et al.
patent: 4015464 (1977-04-01), Miller et al.
patent: 4138879 (1979-02-01), Liebermann
patent: 4235095 (1980-11-01), Liebermann

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