According to the principles of signal detection ultrasonic flowmeter can be divided into propagation velocity difference method (direct time difference method, time difference method, phase difference method and frequency difference method), beam offset method, Doppler method, cross correlation method, And noise law.
Ultrasonic flowmeter and ultrasonic flowmeter, the instrument flow channel is not set any obstacles, are non-obstructive flowmeter, is suitable for solving the problem of flow measurement difficulties of a class of flowmeters, especially in large diameter flow measurement has a more prominent , It is one of the fast-growing class of flow meters.
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Ultrasonic Water Flow Meter :https://www.youtube.com/watch?v=I6MSmgwAbwg
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