Baker Hughes Panametrics PanaFlow LC, Руководство пользователя

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2.5 Determining the number of
Traverses
The first step in the installation is determining the number
of traverses (see Figure 6 below). The transducers can be
mounted using one of two methods:
• Even number of-traverse method - the transducers
are mounted on the same side of the pipe and the
ultrasonic signal is transmitted from one transducer to
the other by reflection off the opposite pipe wall.
• Odd number of-traverse method - the transducers
are mounted diagonally across from each other. The
ultrasonic signal is transmitted across the pipe directly
from one transducer to the other.
Always try the even number of-traverse method first
because it is easier to configure and yields greater
accuracy. However, if the pipe has poor inside surface
conditions or the fluid is highly attenuating, you may not
be able to obtain a reliable signal. Therefore, you may
have to use the Odd number of-traverse method in such
applications. The spacing of the transducers is calculated
by the system after all the installation parameters have
been programmed into the flowmeter.
Figure 6: Even and odd number of Traverse installation
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