When measuring the flow of liquid, because the liquid contains a certain volume of gas, when the fluid pressure is lower than the saturated vapor pressure of the liquid, the gas will be released from the liquid to form bubbles accumulated in the upper part of the pipeline, the bubble has a great impact on the attenuation of ultrasonic propagation, thus affecting the measurement. And the bottom of the pipeline will usually deposit some impurities and sediment, rust and other dirty objects, will adhere to the inner wall of the pipeline, and even cover the inserted ultrasonic probe, so that the flow meter can not work normally. So when measuring liquid flow, avoid the top and bottom areas of the pipeline.
Post time: May-22-2023