Apparatus for the ultrasonic measurement of the flow velocity of fluent media
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United States of America Patent
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May 20, 1980
Grant Date -
N/A
app pub date -
Sep 29, 1977
filing date -
Sep 29, 1977
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an ultrasonic flowmeter ultrasonic signals are transmitted alternately upstream and downstream of a fluent media whose flow velocity is to be ascertained. The repetition rate at which signals are transmitted is controlled by a voltage controlled oscillator. To increase the sensitivity of the meter, the frequency of the voltage controlled oscillator, which is related to sound speed through the fluent media, is increased.
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