Why does an ultrasonic flow meter require a straight pipe section when installed?
2020-08-04 15:19:27
Ultrasonic flowmeters have a large perturbation of the fluid itself, and the received signal is complex where the straight pipe section is short. The unique digital filter technology and frequency tracking technology of SMET can distinguish the mixed clutter signal, different fluid signals and its Filter shaping to give a "good" signal.
Therefore, as long as it has a short straight section (5 to 10 times the pipe diameter), it can obtain a stable reading.
Because ultrasonic flowmeters and electromagnetic flowmeters are velocity flowmeters, it is obvious that a straight pipe segment is short and the disturbance is large. The flowmeter measures whether or not the flow velocity represents the average flow velocity and needs empirical values ​​to correct.
Therefore, when designing a pump room or digging a well, it is still necessary to consider a straight pipe section at the installation point of the pump room or valve after the valve.
Therefore, as long as it has a short straight section (5 to 10 times the pipe diameter), it can obtain a stable reading.
Because ultrasonic flowmeters and electromagnetic flowmeters are velocity flowmeters, it is obvious that a straight pipe segment is short and the disturbance is large. The flowmeter measures whether or not the flow velocity represents the average flow velocity and needs empirical values ​​to correct.
Therefore, when designing a pump room or digging a well, it is still necessary to consider a straight pipe section at the installation point of the pump room or valve after the valve.
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