GE DigitalFlow XMT868i, Руководство для стартапов

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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