Panametrics PT878GC, Instruction Manual

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Chapter 3.
30 TransPort™ PT878GC User’s Manual
3.1.4.2 Installing the First Bracket with a Chain or Strap
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
Figures 26 and Figure 27 below).
Figure 26: 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 27 below).
Figure 27: 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.
3.1.4.3 Installing the Second Bracket with a Chain or Strap
Note: The following step requires the transducer spacing discussed on Chapter 3.
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 28 below).
Figure 28: 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.
Front Edge of
Holder Bracket
Origin Scribe Line