TransPort™ PT878GC User’s Manual
151
Chapter 9.
9.1.5 Programming the Thickness Gauge
While the T-Gauge Display option allows you to program the appropriate material and sound speed, the Thickness
Gauge Setup option enables you to view or change five parameters:
•
Low Signal Threshold
•
Transducer Delay
•
Signal Inversion
•
Noise Threshold
•
Detection Threshold
IMPORTANT:
The thickness gauge programming settings are entered at the factory. You should not change them
unless instructed by Panametrics Sensing.
The Programming window appears similar to Figure 140 below.
Figure 140: The Thickness Gauge Programming Window
1.
Press the [
] arrow key to enter the window.
2.
The first prompt asks for the low signal threshold. If the signal strength falls below this value, a “Low Signal”
message appears on the screen. To change this value:
a.
Press
[ENTER]
to open the text box.
b.
Use the numeric keys to enter the provided value.
c.
Press
[ENTER]
to confirm your entry.
3.
The next value, transducer delay, represents the time the ultrasonic signal takes to travel from the meter to the
pipe material surface. To change this value:
a.
Press
[ENTER]
to open the text box.
b.
Use the numeric keys to enter the desired value.
c.
Press
[ENTER]
to confirm your entry.
4.
The signal inversion prompt enables you to invert the thickness transducer signal. Signal inversion may be
necessary if your thickness readings show unusual jitter, or for certain unusual combinations of pipe and fluid or
pipe and lining. Consult the factory before measuring the thickness of lined pipes.
Note:
When measuring the thickness of certain pipe materials, you might need to drain the pipe before measuring
the pipe wall, because certain pipe/liquid combinations muffle the ultrasonic echo.
Thickness Gauge Setup
Cancel
OK
Low Signal Thresh
0 %
Transducer Delay
0
Signal Inversion
Noise Threshold
On
Off
0
Detection Threshold
%
0 %
µs
Programming
Содержание PT878GC
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Страница 199: ...Appendix A TransPort PT878GC User s Manual 189 Figure 163 The Site Menu...
Страница 200: ...Appendix A TransPort PT878GC User s Manual 190 Figure 164 The Program Menu Transducer Lining Fluid and Path Options...
Страница 201: ...Appendix A TransPort PT878GC User s Manual 191 Figure 165 The Program Menu Pipe Option...
Страница 204: ...Appendix A TransPort PT878GC User s Manual 194 Figure 168 The Meter Menu...
Страница 205: ...Appendix A TransPort PT878GC User s Manual 195 Figure 1 Logging Mneu...
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