Epson USN 52L - Manual (Page 106)

Krautkramer USN 52R/USN 52L Issue 05, 02/00 5-61
O-DIAM Test object diameter
You need the function O-DIAM if you are dealing with
circular curved surfaces, e.g. when testing longitudi-
nally welded tubes. To enable the instrument to make
the corresponding correction of (reduced) projection
distance and depth, you have to enter the outside diam-
eter of the test object at this point.
If you want to make the flaw position calculation for
plane-parallel test objects, the function O-DIAM has to
be set to infinite.
If O-DIAM is set to a value other than infinite, the fol-
lowing status indicator will appear on the screen:
Operation:
– Use M to set the outside diameter of the test
object in O-DIAM, or select infinite if you are testing
plane-parallel test objects.
H Note
You can select infinite directly by simultaneously
pressing N and O .
Displaying the measured values
The determined values are displayed in the measure-
ment line:
S = Sound path
D = Depth
PR = Reduced projection distance, this is displayed
when X-VALUE is not 0.
Otherwise this will read:
P = Projection distance.
– With U select the value which is to be indicated in
enlarged figures on the display.
H Note
No values for P, PR and D are displayed if, according to
geometrical conditions, the sound beam does not hit
the inner surface of the workpiece.
Setting the flaw location calculation Operation
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5-61
O-DIAM Test object diameter
You need the function O-DIAM if you are dealing with
circular curved surfaces, e.g. when testing longitudi-
nally welded tubes. To enable the instrument to make
the corresponding correction of (reduced) projection
distance and depth, you have to enter the outside diam-
eter of the test object at this point.
If you want to make the flaw position calculation for
plane-parallel test objects, the function O-DIAM has to
be set to infinite.
If O-DIAM is set to a value other than infinite, the fol-
lowing status indicator will appear on the screen:
Operation:
– Use M to set the outside diameter of the test
object in O-DIAM, or select infinite if you are testing
plane-parallel test objects.
H Note
You can select infinite directly by simultaneously
pressing N and O .
Displaying the measured values
The determined values are displayed in the measure-
ment line:
S = Sound path
D = Depth
PR = Reduced projection distance, this is displayed
when X-VALUE is not 0.
Otherwise this will read:
P = Projection distance.
– With U select the value which is to be indicated in
enlarged figures on the display.
H Note
No values for P, PR and D are displayed if, according to
geometrical conditions, the sound beam does not hit
the inner surface of the workpiece.
Setting the flaw location calculation
Operation