KROHNE PipePatro EN - Manual (Page 11)

DEVICE DESCRIPTION
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11
PIPEPATROL
www.krohne.com 02/2013 - 4002275001 - MA PipePatrol R01 en
Using the same physical principle as the wave propagation method, the extended method takes
into account intermediate station measurements. Using the information from intermediate
stations and E-RTTM's knowledge about the velocity of sound profile in the pipeline, jitter error
introduced by slow sensor scan rates can be eliminated.
Extended Wave Propagation Method
Figure 2-3: Extended Wave Propagation Method