Baker Hughes Panametrics PanaFlow LC, Руководство пользователя

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Figure 111: MCF even traverse installation, step 3
4. To ensure that there is enough clearance to mount
the transducers in the blocks, move the adjustable
magnetic block so that it is at least 4” (100 mm) away
from the nearest transducer block. Then, secure the
block to the rods with the thumbscrews.
Figure 112: MCF even traverse installation, step 4
5. Position the clamping fixture along the horizontal plane
of the pipe. It must not be on the top or bottom of the
pipe.
Figure 113: MCF even traverse installation, step 5
6. Turn the switches on both magnets to the ON position.
Figure 114: MCF even traverse installation, step 6
Proceed to the section on mounting the transducers later in
this chapter.
B.3.2 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 odd traverse MCF consists of two sub-assemblies. Each
subassembly is made up of one adjustable transducer
block, two magnetic blocks and two connecting rods. The
two sub-assemblies must be installed on opposite sides of
the pipe. To install the MCF in an odd traverse configuration,
complete the following steps:
1. Choose a location for the installation that has at least 10
pipe diameters of straight, undisturbed flow upstream
and at least 5 pipe diameters of straight, undisturbed
flow downstream from the measurement point.
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.
Figure 115: MCF odd traverse installation, step 3
4. Using a level and center punch, make two marks on the
line drawn in step 3. These marks must be separated by
the transducer spacing distance S, as calculated by the
flowmeter.
Figure 116: MCF odd traverse installation, step 4
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