DeFelsko PosiTector 200 v.1.2 - Manual (Page 7)

Page 7
Select a reference standard of material as
close as possible in composition to the
intended application. For best results, the
thickness of the reference standard should be
equal to or slightly greater than the thickness
of the coating to be measured.
1. Apply a drop of couplant onto the reference standard.
2. Measure the reference standard.
3. Lift the probe. Select the ADJ. THICKNESS menu option.
4. Adjust the display down or up to the reference standard
thickness.
5. Press simultaneously to store the adjustment and exit.
Note: A RESET (pg.10) will restore factory settings.
To make adjustments:
1. Measure the coated part.
2. Select the Set Gates menu option.
3. Gate A can be changed first. Adjust the value down or up .
Press simultaneously to accept the value and to move to Gate B.
4. Gate B can now be changed. Adjust the value down or up .
5. Press simultaneously to accept the value and exit.
Gate B
Gate B should be low enough to prevent total
thickness measurements of the coating plus
substrate. If results are much greater than
the expected thickness, lower the value of
Gate B.
Expected paint thickness Gate A Gate B
20 mils (500µm) on concrete 5 mils (127µm) 40 mils (1000µm)
2 mils (50µm) on wood 1 mil (25µm) 10 mils (250µm)
Here are some typical Gate settings...
Adjust Thickness Option Adjust Thickness Option
NOTE: The displayed thickness reading may change when Gate values are adjust-
ed. The new thickness value represents the distance to the "loudest" interface with-
in the new A/B Gate values (see pg.3). This handy feature makes it easy to ignore
other measurements such as surface roughness.
For additional help with Gates see Application Notes (pg.15)