Appendix C
A-68
To mount the transducers using the Z-method:
1. Complete steps 1 through 4 in Section 4.2.
2. Establish a reference at both the 3 o’clock and 9 o’clock positions of the pipe (Figure 4-
7).
Figure 4-7 Establishing a 3 O’clock and 9 O’clock Reference (Z Method)
3. Place one of the transducers at the 3 o’clock position (Figure 4-8).
4. Trace the shape of the 3 o’clock transducer along its inside edge (opposite the cable
connection) and draw a horizontal line at its center (Figure 4-8). Remove the
transducer.
NOTE:
If the pipe is painted and can be marked, use a pipe marker or felt-tip marker.
If it is not painted, scratch the outline on the pipe with a screwdriver, knife, or
paint scraper.
Figure 4-8 Tracing the 3 O’clock Transducer (Z Method)
5. Obtain a continuous sheet of paper longer than the circumference of the pipe.
NOTE:
Calculator paper tape or thermal printer paper works well for this.
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