Baker Hughes Panametrics PanaFlow LC, Руководство пользователя

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5. From each of the marks on the top of the pipe, measure
around the pipe in the same direction a distance equal
to 1/4 the pipe circumference. Use the center punch to
make a mark at each location.
Figure 99: GCF even traverse installation, step 5
6. Center one of the blocks over one of the center punch
marks on the side of the pipe. Align the block so that the
pressure bolt is directly over the punch mark. Secure the
block by wrapping the two steel straps around both the
block and the pipe and tightening the straps.
IMPORTANT:
Make sure both straps are perpendicular to the bottom of
the block. If the straps are slanted, the slack will cause the
block to move. Also, the transducer spacing dimension
may change after the transducers are mounted.
Figure 100: GCF even traverse installation, step 6
7. Repeat Step 6 to install the other block.
Figure 101: GCF even traverse installation, step 7
Figure 102 below shows a completed even-traverse
installation without the transducers. Proceed to the section
on mounting the transducers later in this chapter.
Figure 102: Even traverse GCF Installation without transducers
B.2.2 Odd number of-traverse method
Note: The instructions in this section can also be used for a
multiple-traverse method. However, you must use an ODD
number of traverses. The distance the signal travels from
one side of the pipe wall to the opposite side of the pipe wall
is considered one traverse. For installations with more than
one traverse, contact Panametrics for assistance.
The procedure for mounting the GCF for the odd number of-
traverse method includes marking the pipe for the required
transducer spacing, fastening the fixture to the pipe, and
then mounting the transducers into the fixture.
To install the GCF odd traverse, complete the following steps:
1. Ensure the location of your clamping fixture has been
properly scoped out following the criteria in Section 2.6:
Precautions.
2. Prepare the pipe where you intend to place the GCF
by making sure it is clean and free of loose material.
Sanding, though usually not required, may be necessary
to remove any high spots. However, be careful to
preserve the original curvature of the pipe.
3. Use a level to find the top of the pipe and then draw a
line parallel to the centerline of the pipe.
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