Chapter 3.
22
TransPort™ PT878GC User’s Manual
3.1.2
Preparing the Pipe
1.
Locate a transducer measurement point with 20 diameters of upstream straight run pipe and 10 diameters of
downstream straight run pipe. In addition, the point should be at least 10 diameters from any butt welds or
flanges. Keep appropriate clearance on either side of the pipe for easy transducer installation:
• 150 mm (6 in.) if you are not using a junction box, or
• 225 mm (9 in.) if you are using a junction box.
In general, transducers are installed 180° apart on opposite sides of the pipe and in a horizontal plane (at 3 and 9
o’clock). Figure 12 below illustrates the desired acoustic signal projection path for general installation; however,
additional pipe surveys may provide data that can lead to modifications for optimal installation.
Figure 12: Desired Projection of Acoustical Signal Path
Summary of Contents for PT878GC
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Page 199: ...Appendix A TransPort PT878GC User s Manual 189 Figure 163 The Site Menu...
Page 201: ...Appendix A TransPort PT878GC User s Manual 191 Figure 165 The Program Menu Pipe Option...
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