User`s manual

December 2003
3-44 Programming Site Data
Entering Signal Limits (cont.)
10. Setting the Delta-T Offset
Consult GE Panametrics before performing this step.
Delta-T is the difference between the upstream and downstream
transit time of the transducers. You usually need to enter a Delta-
T offset when you are using a test flowcell provided by GE
Panametrics. Acceptable values are between -1000 and 1000
nsec.
To enter an offset, use the numeric keys to enter a value and press
[ENT].
11. Setting the Percent of Peak
The TransPort uses the percent of peak to calculate the transit
times and Delta T. This value is set to -40 percent by default.
Acceptable values are between -100 to 100 percent.
Note: The setting here is really a starting point for detecting the
signal. The meter will automatically adjust this value if
the calculated transit time is unacceptable. See Step 15 for
how to set the limits on this value.
To change the current value, use the numeric keys to enter a new
value and press [ENT].
12. Selecting the Transmitter Voltage
The transmitter voltage has the following two settings:
• LOW - (default) which is used for smaller pipes with a single-
phase fluid. (This setting prolongs the life of the battery.)
• HIGH - which is used on large pipes or pipes with one or more
phase.
Use the appropriate feature key to respond.