About Open Channel Flow Sensors
Open channel flow sensors measure fluid flow through open channels. Open channel flow measurement is difficult because of non-uniform channel dimensions and variations in velocities across the channel. Some open channel flow sensors measure the displacement of a vane or piston that is pushed by the fluid. A non-contacting open flow sensor avoids flow disturbances and fouling. Doppler flow meters transmit acoustic waves into the flow and use the frequency shifts of reflected waves to determine the flow velocity. Ultrasonic open channel flow sensors mount a non-contacting sensor above the flume or weir through which fluid passes. An ultrasonic flow sensor transmits an ultrasonic pulse and measures the time elapsed when an echo is received. In this way, ultrasonic flow sensors can measure the water level or "head" accurately. An open channel flow monitor can continuously monitor, display, totalize and log flow information.
Engineering Web: Open Channel Flow Sensors - Machine Design
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Fluid Power Monthly Available in 34 standard Lohm rates (3000 to 30,000 Lohms), the 156 Lee Jets are 100% bidirectionally flow tested to ensure accurate performance. |
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Latest Mechanical Content Feed | Machine Design |
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Latest Mechanical Content Feed | Machine Design or three channels with individual spring-loaded tracks to deliver channel-to-channel accuracy and maximum tube life. |
