DMTA-20073-01EN, Rev. C, November 2015
Chapter 4
50
To apply water couplant before performing the inspection
1. Using the manual pump provided with the RollerFORM, apply a mist of water to
the surface to inspect and to the acoustic wheel.
For more information, see “Manual Pump” on page 23.
2. Roll the RollerFORM back and forth a few times to uniformly wet the acoustic
wheel.
4.2 Optimizing the Phased Array Signal
To optimize the phased array signal, you need to adjust the angle of the RollerFORM’s
probe relatively to the surface to inspect.
To optimize the phased array signal
1. Apply water couplant to the surface to be used for signal optimization and to the
acoustic wheel of the RollerFORM.
2. Using the handle, apply sufficient downward pressure on the RollerFORM.
3. Loosen the angle-adjustment knob on the acoustic wheel’s mount on the probe-
cable side (see Figure 4-1 on page 51).
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