User`s manual

December 2003
3-22 Programming Site Data
Entering Parameters for Wetted Transducers
If you are using wetted transducers, you will get the following
prompts:
• Pipe OD (pipe outside diameter)
• Pipe Wall
• Path Length (P)
• Axial Dimension (L)
• Tracking Windows
• Fluid Type
• Reynolds Correction Factor (and Kinematic Viscosity)
• Calibration Factor
2W. Entering the Outside Diameter of the Pipe
The first prompt for wetted transducers is pipe outside diameter
(OD). If you do not know the outside diameter of your pipe, use
either the on-line help or consult Sound Speeds and Pipe Size
Data that contains some standard pipe sizes with their
corresponding outside diameters. For greater accuracy, measure
the pipe OD at the location where the transducers will be
mounted. Always enter the exact OD dimension and not the
nominal value. The PT868 can also calculate the outside diameter
from the pipe circumference.
To enter the outside diameter or circumference:
a. Press the appropriate feature key to select the units. You
can enter the outside diameter in inches (F1) or feet (F2),
or the circumference in inches (F3) or feet (F4).
b. Use the numeric keys to enter the outside diameter or
circumference.
c. Press [ENT].