Abstract

A clamp-on ultrasonic flowmeter is the only flowmeter that can be installed on existing pipelines without draining and plumbing. In conventional clamp-on ultrasonic flowmeters, the relative position of transducers depends heavily on the properties of the pipe on which the transducers are mounted. It takes a high engineering cost at the time of installation because a specialized engineer is needed to align the position of the transducers and input pipe properties. In this paper, to solve this problem, we propose a new type of clamp-on ultrasonic flowmeter with opposing transducers configuration to reduce engineering cost during the installation by eliminating the location alignment of transducers, and show flow velocity measurement results at various pipe diameters with ±6% accuracy. Additionally, we show the measurement results of the pipe diameter from the received signal and suggest the possibility for the automatic measurement of pipe properties.

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