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Transcript
March 2005
Appendix B
Measuring P and L Dimensions
If you are using wetted transducers, the PT878 requires you to
enter the path length (P) and the axial dimension (L). 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 B-1 below, if possible. If not, consult the factory.
Pipe Thickness
P
θ
Pipe O.D.
L
Figure B-1: Top View of 180° Transducer Installation
Measuring P and L Dimensions
B-1