Appendix B. Measuring P and L Dimensions
Transport® Model PT878 Portable Liquid Flowmeter User’s Manual 241
Use the following formula to determine the P dimension:
[ID + 2(WT)]/(cos MA) = 2 (CL- FD) = P dimension
For example, given the following:
• inside diameter (ID) = 48”
• wall thickness (WT) = 3/8”
• installed coupling length (CL) = 2.0”
• a transducer face depth (FD) = 1.75”
• mounting angle (MA) = 45°
The P dimension would be:
[48 + 2(3/8)]/(0.7071) + 2(2.0-1.75) = 69.4”
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