Detectronic - specialists in flow measurement technology

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UDFM Dual

This innovative concept in ultrasonic measurement gathers echo readings from two differently spaced transducers mounted on a common frame, processing flow surface echos with the lower unit only. With constant monitoring of the phase difference between the two transducers, UDFM Dual dynamically compensates for any changes in the speed of sound between the transducers and liquid surface.

Unlike conventional transducers which only compensate for variations in temperature, UDFM Dual’s speed of sound measurement creates the unique capability to immediately compensate for changes in air density throughout the entire column of air between the transducer face and the liquid surface. As conventional temperature compensation is limited by slow reaction time and minimal compensation point, UDFM Dual is a significant breakthrough. In tests, against a temperature variation of more than 30ºC, UDFM Dual and UDFM FlowCERT achieved linear measurement accuracies of ±0.5mm.

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Summary