Panametrics PT878GC, Instruction Manual

Page: 154 / 224

Chapter 9.
144 TransPort™ PT878GC User’s Manual
9.1.4 Measuring Pipe Wall Thickness
9.1.4.1 Entering the Material and Sound Speed
IMPORTANT: Panametrics Sensing recommends calibrating the thickness gauge periodically (as discussed on
page 148) before measuring thickness.
To enter the Thickness Gauge Display option, scroll to the
T-Gauge Display entry on the Service Menu and press [ENTER] . The screen appears similar to Figure 133 below.
Figure 133: The Material Window
1. From the Thickness Gauge Display option, press the [

] arrow key four times to enter the Material window.
2. The first prompt asks you to select the material for the pipe wall you wish to measure from a drop-down list.
a.
Press
[ENTER]
to open the list.
b. Use the [

] or [

] arrow keys to scroll to the desired material.
c. Press [ENTER] to confirm your selection.
If you have selected a preprogrammed material, you have completed entering data in this window. Pressing the [

]
key returns the program to the Material tab. But if you selected “Other,” you can also enter a specific sound speed.
3. To enter the sound speed:
a.
Press
[ENTER]
to open the text box.
b. Use the numeric keys to enter the known sound speed in the pipe material (from the brochure Sound Speeds
and Pipe Size Data, 914-004).
c. Press [ENTER] to confirm your entry.
To leave the Material window:
• Press the [

] or [

] arrow key to move to another tab to take readings or perform a velocity calibration.
• Press [F2] (Cancel) to return to Operate Mode without confirming the sound speed value.
• Press [F3] (OK) to confirm the new value. The PT878GC returns to Operate Mode.
Thickness Gauge Measure
Cancel OK
Material
Display Graph Velocity
Zero
Sound Speed m/sec
0
Material Other