Enable-IT 868 Manuel d'utilisateur Page 115

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Vue de la page 114
December 2003
9-6 Using the Ultrasonic Thickness Gage
Graphically Displaying Thickness Transducer Signal
To troubleshoot the unit or verify thickness readings, the
TransPort enables you to view the thickness transducer signal. To
display the thickness gage signal, press the [F1] key to select
“GRAPH.”
Note: If you are not in the Calibration Menu, press the following
keys: [CAL]; [F3] to select “WALL”; [F1] to select
“GRAPH.”
Figure 9-5 below shows an example of thickness signal. The Y
axis represents the amplitude of the signal (in arbitrary units).
The X axis represents the time expressed as samples. A sample is
taken every 31.25 nsec (32 MHz). The message line displays the
start time (in µsec) of the current page and the measured
thickness of the pipe.
Figure 9-5: Graph Format for Thickness Measurement
-53 samp#420
18.5 µsecs 1.514 in
<CURS CURS> <PAGE PAGE>
Status Line
Signal Amplitude
Time
Message
Line
Y Axis
Cursor
X Axis
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