Title: Modular transducer assembly

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.

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Inventors: McShane, James L. (Pittsburgh, PA, US)

Application Number: 692694
Filing Date: 1976-06-03
Publication_date: 1978-01-17
Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
Primary Class(es): 310/325 310/328
Other Classes:
US Patent Ref:

3890423	Jun, 1975	Zacharia, Jr.	310/8.
3925692	Dec, 1975	Leschek et al.	310/8.
3935484	Jan, 1976	Leschek et al.	310/8.
3942049	Mar, 1976	Hyanova et al.	310/8.
3970877	Jul, 1976	Russell	310/8.
3989965	Nov, 1976	Smith et al.	310/8.

Other Refs:
Primary Examiner: Budd, Mark O.
Assistant Examiner:
Attorney: Lorin; C. M.