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5.10
Paths
The number of paths is given by the transducer installation method.
With the current available transducers, W mode will not be used.
For pipe diameters up to 350 mm, V mode is recommended. This mode ensures that the
propagation path of the ultrasonic wave is long enough so that the instrument can
successfully perform the measurement. V mode consists of placing the transducers aligned
on the pipe. The propagated signal is reflected in the central point on the opposite side of
the pipe.
V mode
For pipe
diameters bigger than 350 mm, Z mode is recommended, which consists of placing
the transducers on opposite sides of the pipe. The signal is propagated directly from one
transducer to the other.
Z mode
Depending on the pipe material and the process fluid, the selection of transducer placement
mode (V or Z) according to pipe size may be different than above indicated.
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