Baker Hughes Panametrics PanaFlow LC, Руководство пользователя

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Make sure to take the 180° point measurement from both
over the top of the pipe and under the bottom of the pipe
(on a horizontal pipe) to ensure reciprocity of the installation.
Figure 32 below shows the appropriate way to measure the
180° point.
180° & C/2
180° & C/2
Figure 32: Measuring the 180° point from top and bottom
2.9.2 Installing the first bracket with a chain
The following steps describe how to install the PI fixture with
a supplied chain or strap.
1. Carefully wrap the chain or strap around the pipe,
taking care not to twist it.
2. Loosen the wing nuts up to the end of the J-hooks. Then
hook the chain into the tightest links and loosely hand
tighten the wing nuts. If you are using a strap, insert the
J-hook into the smaller round hole on the strap.
3. Line up one edge of the CFG-PI holder bracket with the
origin scribe line and fully tighten the chain or strap (see
Figure 33 and Figure 34 below).
Origin Scribe Line
Front Edge of Holder Bracket
Figure 33: Lining up the first bracket
4. Install the transducer dummy block to verify the
circumferential and axial location. Center the indicator
line on the block to line up with the scribed mark (see
Figure 34 below).
Figure 34: Positioning the CFG-PI holder bracket
5. Loosen the transducer hold-down screw and tighten the
J-hooks on the clamping fixture. Be sure the bracket has
not moved from its position.
2.9.3 Installing the second bracket with a chain
1. Measure the spacing from the zero point (the point of
circumferential origin). Mark the spacing point with a
crosshair on the opposite side of the pipe, 180° from the
zero point (as shown in Figure 35 below).
Figure 35: Measuring and marking spacing
2. Carefully wrap the chain or strap around the pipe,
taking care not to twist it.
3. Loosen the wing nuts up to the end of the J-hooks. Then
hook the chain into the tightest links and firmly hand
tighten the wing nuts.
4. Line up the other edge of the CFG-PI holder bracket with
the scribe line and tighten the chain or strap, as shown
in Figure 36 below.
Mark on Opposite Scribe Line
Rear Edge of Second Block
Figure 36: Line up rear edge of bracket with 180° scribe line
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