Chapter 4. Programming
TransPort
®
PT900 User’s Manual 69
4.5.1 Programming the Transducer Parameters (cont.)
4. For Clamp-On transducers only, the following three additional parameters
are required:
a.
WEDGE ANGLE: This parameter is entered automatically by the PT900
for all
Standard transducers, but it must be edited with the correct
value provided by GE for
Other transducers.
b.
WEDGE SOUND SPEED: This parameter is entered automatically by
the PT900 for all
Standard transducers, but it must be edited with the
correct value provided by GE for
Other transducers.
c.
WEDGE TEMPERATURE: This parameter must be entered manually for
all transducers. It should be the average of the ambient temperature
and the process temperature.
4.5.2 Setting the Reynolds Correction Factor
The REYNOLDS CORRECTION FACTOR can be set to either On or Off (see Figure 75
on page 66). This factor corrects the fluid velocity measured across a diametrical
path so that it more accurately represents the average fluid velocity across the entire
cross-sectional area of the pipe. The
REYNOLDS CORRECTION FACTOR should be
turned
On for all clamp-on measurements.
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