Ultrasonic flow meters - UFM 530 HT - Forbes Marshall
Ultrasonic flow meters - UFM 530 HT - Forbes Marshall
Ultrasonic flow meters - UFM 530 HT - Forbes Marshall
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<strong>UFM</strong> <strong>530</strong> <strong>HT</strong>PRODUCT FEATURES 11.2 Measuring principle• Like canoes crossing a river, acoustic signals are transmitted and received along a diagonalmeasuring path.• A sound wave going downstream with the <strong>flow</strong> travels faster than a sound wave goingupstream against the <strong>flow</strong>.• The difference in transit time is directly proportional to the mean <strong>flow</strong> velocity of the medium.Figure 1-1: Measuring principle1 Flow velocity2 Transducer A3 Acoustic path4 Transducer B5 Angle (between <strong>flow</strong> vector and acoustic path vector)6 Diameter02/2010 - 4000210602 - TD <strong>UFM</strong> <strong>530</strong> <strong>HT</strong> R02 enwww.krohne.com5
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