KROHNE OPTISONIC 6300 P-6400 EN - Manual (Page 75)

TECHNICAL DATA
8
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OPTISONIC 6300 P
www.krohne.com 03/2013 - 4000972603 - MA OPTISONIC 6300 P R03 en
8.1 Measuring principle
• Like canoes crossing a river, acoustic signals are transmitted and received along a diagonal
measuring path.
• A sound wave going downstream with the flow travels faster than a sound wave going
upstream against the flow.
• The difference in transit time is directly proportional to the mean flow velocity of the medium.
Figure 8-1: Measuring principle
1 Transducer A
2 Transducer B
3 Flow velocity
4 Transit time from transducer A to B
5 Transit time from transducer B to A