Epson USN 52L, USN 52R manual Diam Test object diameter, Displaying the measured values

Setting the flaw location calculation Operation

O-DIAM Test object diameter

You need the function O-DIAMif 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-DIAMhas to be set to infinite.

If O-DIAMis 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.

HNote

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.

HNote

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.

Krautkramer USN 52R/USN 52L Issue 05, 02/00 5-61