DMTA-20006-01EN, Rev. B, February 2014
Setup and Operation
25
2.3 Changing the Wedge
You need to change the wedge when you inspect a pipe with a different outside
diameter.
To change the wedge
1. Remove the outer probe-holder arm (see Figure 2-5 on page 25):
a) Loosen without removing the probe-holder-arm screw.
b) Slide the arm off the probe holder.
Figure 2-5 Changing the wedge on the scanner
2. Unscrew the two screws holding the probe to the wedge.
3. Assemble the probe and the new wedge:
a) See Table 7 on page 55 to select the appropriate wedge for the outside
diameter of the pipe to be inspected.
b) Apply couplant on both the probe and the wedge-surface interface.
c) Screw the probe on the wedge.
d) Remove excess couplant.
4. Insert the inner probe-holder-arm pin into the mounting hole in the wedge.
Wedge
Outer probe-holder arm
Outer probe-holder-arm
screw
Inner probe-holder-arm pin
Probe
Probe holder
Outer probe-holder-arm pin
Mounting hole
Apply couplant
Couplant tube
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