Chapter 2. Installation
8
PanaFlow™ LC User’s Manual
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
Содержание Baker Hughes PanaFlow LC XMT1000
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