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(PosiTector 6000 FNDS only)
For rough zinc surfaces (i.e. zinc spray metallizing), it may be desirable to adjust the
Gage to a known thickness, such as a shim placed over the zinc, rather than adjusting it
to zero. This ensures the Gage measures the thickness of paint over the metallizing
peaks.
Press (+) to select the number of readings to be used to obtain an average, typically 3
to 10 readings. The greater the variation between readings, the more readings should
be taken to obtain an average.
Repeatedly measure the known thickness reference on the unpainted galvanized part.
The Gage will wait two seconds between readings to allow the user to correctly position
the probe on the surface. After the last measurement, the Gage will calculate and
display the reading which represents the average of all the measurements taken. If the
expected reading is not obtained (within tolerance), lift the probe from the surface and
adjust the reading down (-) or up (+) to the expected thickness and press the center
button.
NOTE:
The known thickness should be similar to the expected paint thickness.
Zero Offset
The Zero Offset adjustment is useful when measuring coating thickness over rough or
blasted substrates without access to the uncoated representative substrate. Predefined
Zero Offset values can be selected according to the blast profile height (as determined
by ISO 8503-1) in accordance with ISO 19840. Alternatively, a custom Zero Offset can
be entered.
Fine 10 um (0.40 mils)
Medium 25 um (1.00 mils)
Coarse 40 um (1.55 mils)
Custom Adjust with (-)(+)
The Zero Offset value is subtracted from each reading.
F Zero
(PosiTector 6000 FNDS only)
Measure the uncoated steel substrate (if available). If the average of several F readings
is not within tolerance of 0, perform an F Zero adjustment.
Press (+) to select the number of readings to be used to obtain an average, typically 3
to 10 readings. The greater the variation between readings, the more zero readings
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