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Location > News > How to achieve the two-way flow measurement using ultrasonic flowmeter

How to achieve the two-way flow measurement using ultrasonic flowmeter

The ultrasonic flowmeter principle is to use the sound velocity difference calculating the fluid velocity, and multiplied by the area to calculate the volumetric flow rate and fluid velocity. Usually ultrasonic flowmeter of the probe, i.e. between the transducer and the meter body, at an incident angle from 60 degrees to 45 degrees. The ultrasonic wave propagation in the pair of probes between, if there is no fluid, but also is the case of zero flow, the round-trip propagation time is the same, then the equivalent velocity to zero. Once fluid, the speed of ultrasound back and forth between one pair of probes are not the same. Regardless of the flow of fluid, will produce a sound velocity differential, if the setting of a direction of normal flow, then the normal sound velocity should be a positive number if the sound velocity difference is negative, then the flows in the opposite, that is, can reverse the measurement, the two directions of measurement accuracy same。