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TYPICAL TRIG MODE MEASUREMENT SCREEN
When TRIG mode is enabled, the calculated measurements are
displayed below the waveform display area at (B), and the signal
amplitude as a percentage of full screen height at (A).
CURVED SURFACE CORRECTION
The gauge will also compensate for convex curved
surfaces of longitudinally welded pipes.
For a given transducer, a curved surface results in a
longer sound path than a flat surface. You should
consider the angle used on curved surfaces, with
respect to the material thickness, in order to be sure a
reflection will occur from the opposite surface of the
test material.
In order to use the curved surface compensation
function, the outside diameter must be entered into the
gauge.
19.2 SETTING UP TRIGONOMETRY MODE
TRIG MODE SETTINGS
Setting
Values
TRIG
ON
OFF
THICKNESS
Numerical
value
ANGLE
Numerical
value
X-OFFSET
Numerical
value
CSC OD
Numerical
value
ADJUSTING TRIG MODE SETTINGS:
1. Select MENU/TRIG then the desired function
2. Use the LEFT and RIGHT keys to scroll the value, or press ENTER to open the digits edit box
and adjust the value using the navigation buttons
3. Press OK to set the value and return to the menu screen, or ESC to cancel.
4. Press MEAS to return to the measurement screen.
37
Function
Enables Trig Mode.
Disables Trig Mode.
When disabled, all the other menu items are greyed out.
The thickness of the material being scanned for flaws.
The angle of the transducer.
The X-Offset is used for purposes of marking, and is
physically measured with a ruler from the index point to the
front edge of the transducer.
Curved Surface Outside Diameter. This value is only used
when scanning the curved surfaces of longitudinally welded
pipes.
A
B
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