Appendix C. Measuring P And L Dimensions; Measuring P And L - GE DigitalFlow XMT868i Startup Manual

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

Appendix C. Measuring P and L Dimensions

) and the axial dimension (
P
in the flow stream.
P
Pipe O.D.
),
L
75