GE DigitalFlow XMT868i - Appendix C. Measuring P and L Dimensions; C.1 Measuring Transducer Path and Axial Lengths

DigitalFlow™ XMT868i Startup Guide 75
Appendix C. Measuring P and L Dimensions
Appendix C. Measuring P and L Dimensions
C.1 Measuring P and L
If you are using wetted transducers, the XMT868i requires you to enter the path length (P) and the axial dimension (L),
where
P is the transducer face-to-face distance and L is the axial projection of P in the flow stream.
To determine
L, physically measure the distance between the center of the transducer ports at the inside wall as shown
in Figure 22 below, if possible. If such a measurement is not possible, consult the factory.
Figure 22: 180
o
Transducer Installations - Top View
To determine
P, you need to know the following:
• Pipe inside diameter (ID)
• Wall thickness (WT)
• Installed pipe coupling length (CL)
• Transducer face depth (FD)
• Mounting angle (MA)
Pipe O.D.
L
P
θ
Pipe Thickness