Application Cautions for Transit Time Ultrasonic Flow Meters
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Ultrasonic Flow Meters Application Cautions for Transit Time Ultrasonic Flow Meters For transit time ultrasonic flow meters, be sure that the fluid can adequately conduct ultrasonic waves, because the flow meter will not measure when the ultrasonic waves cannot penetrate the flow stream between the transducers. Similarly, ultrasonic waves must be able to penetrate the fluid for Doppler flow meters to operate accurately. When the fluid is relatively opaque and does not penetrate the fluid, Doppler flow meters tend to measure the velocity of the fluid at or near the pipe wall, which can cause significant measurement error and/or cause the flow meter to fail. |