Working principle and characteristics of ultrasonic flow meter

Working principle: Ultrasonic flow meter measures the liquid flow by detecting the influence of fluid flow on ultrasonic waves, which uses the "time difference method". Generally, the flow meter has 2 probes. First, the probe 1 transmits a signal, and the signal passes through the pipe wall 1, the fluid, and the pipe wall 2 is received by the probe 2 on the other side; while the probe 1 transmits the signal, the probe 2 also sends out the same signal, passing through the pipe wall 2. After the fluid and the pipe wall 1 are received by the probe 1, the two times are not equal due to the flow velocity, and there is a time difference. Therefore, the flow velocity can be obtained according to the time difference, and then the flow value can be calculated.