Value; O-Diameter - GE USM 36 Series Technical Reference And Operating Manual

Flaw position calculation with angle-beam probes
X VALUE
You can use the function X VALUE to set the X value
(distance of probe front edge from the probe index or
sound exit point) of the probe used. This value is re-
quired for the automatic calculation of the reduced pro-
jection distance.
The adjustment range is 0.00 ... 254.00 mm.
You can set the value by coarse adjustment steps or by
fine adjustment (see Section Coarse adjustment and
fine adjustment, page 4-11).
– Select the function X VALUE.
– Set the required value.
USM 36

O-DIAMETER

You need the function O-DIAMETER when working with
circular curved surfaces, e.g. when inspecting longitudi-
nally welded tubes perpendicular to the main axis of the
tube. To make the USM 36 carry out the corresponding
correction of the (reduced) projection distance and
depth, enter the outside diameter of your test object
here.
If you want to carry out the flaw position calculation for
flat plane-parallel test objects, the function O-DIAME-
TER must be set to FLAT.
You can set the value by coarse adjustment steps or by
fine adjustment (see Section Coarse adjustment and
fine adjustment, page 4-11).
The following settings are possible:
● 50 ... 2000 mm
● FLAT
– Select the function O-DIAMETER.
– Set the required value.
Issue 2 (12/2013)
5 Operation
5-47