Measuring equipment for acoustic determination of the specific g

Details Measuring equipment for acoustic determination of the specific g Measuring equipment for acoustic determination of the specific g

1980-05-01

1981-10-27

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

73 32A, 310336, H01L 4108

Patent

active

042976081

ABSTRACT:
The invention relates to a measuring probe for the acoustic determination of the specific gravity of a liquid. The probe includes a holder to which is attached at opposite ends thereof a ceramic piezoelectric transducer disc and a reflector disk. A reference element having a known acoustical impedance has one end thereof abutting the transducer disc and the other end thereof spaced from the reflector disc to form a sampling space therebetween.

REFERENCES:
patent: 2565725 (1951-08-01), Frederick et al.
patent: 2657319 (1953-10-01), Smack
patent: 2711646 (1955-06-01), Mendousse
patent: 2869357 (1959-01-01), Kritz
patent: 3028749 (1962-04-01), Welkowitz
patent: 3100885 (1963-08-01), Welkowitz et al.
patent: 3117440 (1964-01-01), Wilner

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