Modular transducer assembly

Details Modular transducer assembly Modular transducer assembly

1976-06-03

1978-01-17

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310328, H01L 4104

Patent

active

040694330

ABSTRACT:
A flowmeter transducer assembly specially designed for high temperature operation includes only dry-coupled elements. A subassembly preassembled before installation on the pipe section consists of a piezoelectric element held between front and backing electrodes. The backing electrode is backed by a contact electrode while leaving a gap therebetween to prevent reflection of acoustic energy back to the rear of the transducer. The subassembly is introduced into a housing clamped directly on a flow section of a pipe, where the pipe wall is an acoustic wave transmitting or receiving window. In a different embodiment the pipe may serve as the front electrode in dry coupling.

REFERENCES:
patent: 3890423 (1975-06-01), Zacharias, Jr.
patent: 3925692 (1975-12-01), Leschek et al.
patent: 3935484 (1976-01-01), Leschek et al.
patent: 3942049 (1976-03-01), Hyanova et al.
patent: 3970877 (1976-07-01), Russell
patent: 3989965 (1976-11-01), Smith et al.

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