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14
Pantone 534 Blue
Pantone 123 Yellow
Pantone 485 Red
Pantone 123 Yellow
Pantone 534 Blue
Black
Rich Black -
20/20/20/100
Blue - 100/80/30/5
Yellow - 0/27/100/0
Red - 10/100/100/5
Yellow - 0/27/100/0
Blue - 100/80/30/5
Only if you REALLY need them:
Pantone 534 Blue - 100/80/30/5
Pantone 485 Red - 10/100/100/5
Pantone 123 Yellow - 0/27/100/
Shot-blasted Surfaces
The physical nature of shot-blasted surfaces results in coating thickness
readings that are too high. The mean thickness over the peaks can be
determined as follows (not that the statistics program is of great benefit in
this procedure).
Method A:
The meter should be calibrated according to One or Two-
point Calibration procedures. Use a smooth calibration sample
with the same curvature radius and the same substrate as the later
measuring sample. Now take approximately 10 readings on the
uncoated, shot-blased sample to produce the mean value “Xo”.
Then take approximately 10 readings on a coated, shot blasted test
sample to produce the mean value “Xm”. The difference between
the two mean values is the mean coating thickness “Xeff” over the
peaks. The greater standard deviations of the two values “Xm” and
“Xo” should also be taken into consideration: Xeff=(Xm-Xo)±S
Method B
: Carry out a Zero-point Calibration of 10 readings on a
shot-blased, uncoated sample. Then carry out a Foil Calibration
on the uncoated substrate. The foil set should consist of a number
of individual foils of max 50 microns thickness each, and should
roughly correspond to the estimated coating thickness. The coating
thickness can be read directly on the display and should be aver-
aged from 5-10 single measurements. The Statistics Function is
useful here.
Method C:
This method also gives reliable results. Simply follow the
Two-point Calibration method using two foils as described in the
“Two-point Calibration” section. For a maximum approach to the
respective nature of the surface, the foil value can be reached by
using several foils, 50um each. The mean coating thickness should
be calculated from 5-10 readings. The Statistics Function is very
useful here.
NOTE
: For coatings thicker than 300um, the influence of roughness
generally is of no importance and it will not be necessary to apply
above calibration methods.
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