CLAMP-ON ULTRASONIC FLOWMETER AND FLOW RATE MEASURING METHOD
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United States of America Patent
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Dec 10, 2015
app pub date -
Jun 9, 2015
filing date -
Jun 10, 2014
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Abstract
A clamp-on ultrasonic flowmeter includes: a first ultrasonic transducer that injects a first ultrasonic signal at an angle in excess of a critical angle into a pipe wherein a fluid flows; a second ultrasonic transducer, provided in a position able to receive the first ultrasonic signal, which injects a second ultrasonic signal at the same angle as the aforementioned angle, relative to the pipe; and a flow rate calculating portion that calculates either one of or both of a flow speed and a flow rate of the fluid within the pipe based on a first time for the first ultrasonic signal to pass through the interior of the pipe to arrive at the second ultrasonic transducer and a second time for the second ultrasonic signal to pass through the interior of the pipe to arrive at the first ultrasonic transducer.
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