Ultrasonic transducer system with temporal crosstalk isolation

Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy

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7386129, G01F 166

Patent

active

054371945

ABSTRACT:
Transducers are mounted in a housing or vessel to propagate signals along a fluid measurement path, and received signals are temporally separated to remove crosstalk in the acoustic propagation paths of interest, which may be paths through the solid body of the housing or vessel or may be separate paths. These may be segments in a closed path circulation or swirl measurement, or different paths carrying combinations of possibly unrelated measurement signals. In a preferred embodiment, a single channel instrument processes signals from plural transducers which are connected in parallel to its processing input, greatly enhancing the effective system bandwidth and reducing equipment costs. Clamp-on circulation measurement or detection systems are described that allow easy evalution and set-up of flow conditioning loops.

REFERENCES:
patent: 3564912 (1971-02-01), Malone et al.
patent: 4024760 (1977-05-01), Estrada, Jr.
patent: 4102186 (1978-07-01), Brown
patent: 4454767 (1984-06-01), Shinkai et al.
patent: 4860593 (1989-08-01), de Concini
patent: 5001936 (1991-03-01), Baumoel

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