10-003591-01EN [Q7780031], Rev. 4, January 2020
Inspection 37
4. Inspection
Before starting an inspection, make sure that the scanner and instrument setup and
connections have been completed and your inspection surface has been prepared (see
“Setup of Equipment” on page 23 and “Preparation for Inspection” on page 29).
4.1 Wetting the Surface and Purging Air Bubbles
Before an inspection, you must turn on the supply of water, wet the surface, and clear
air from the water column between the inspection surface and the probe.
To wet the surface and purge air bubbles
1. Wet the surface, for example, by using a cloth soaked with water.
2. Open the water supply, and then position the FlexoFORM scanner on the
inspection surface.
3. Move the scanner back and forth (and sideways, if necessary) over the inspection
surface to help clear air bubbles.
4. Observe the instrument display for bubble indications.
5. If necessary, lift the scanner, wipe any bubbles from the probe using a finger, and
repeat these motions until all bubbles are cleared (see Figure 4-1 on page 38).
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