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INSTALLATION
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3.8.8 Installation of the DOWN sensor rail
Measure the circumference of the pipe with a measuring band.
For Z-mode, you must install the DOWN sensor rail at the opposite location on the pipe.
The two most common ways to find the exact location are with the use of a fixed reference point
or determination of transducer position with the use of a paper/plastic material roll. Both
options are described in the following sections.
3.8.9 Find the transducer location with a fixed reference point
• Set the transducer positions for both sensor rails mentioned in the previous table.
• Calculate the half of the circumference.
Figure 3-17: Mark this 180° alignment line on the pipe.
1 Measure the distance between the transducer of the UP sensor rail and the reference point.
2 Add the Advised Distance and mark the location on the alignment line.
Figure 3-18: Find the opposite location with a reference point
1 Measure the distance between the transducer of the UP sensor rail and the reference point.
2 Add the Advised Distance and mark the location on the alignment line.
• Mount the DOWN sensor rail in such a way that the transducer is at the marked location.
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VERSAFLOW SONIC 1000/TWS 9000
34-VF-25-07 iss.2 GLO Nov 11 US
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