User Manual

MMS
®
Inspection DFT High 27
Calibration
calibration method using 1 foil can be used only in the lower measure-
ment range of the gage.
Foil thicknesses that can be used:
• Measurements on Fe
1
base material: max. 800 µm (31.5 mils)
• Measurements on NF
2
base material: max. 1150 µm (45.3 mils)
• Zero + 2 Foil (calibration steps Zero and two times Foil)
On the one hand, a calibration with 2 calibration foils yields the best
measurement accuracy in the coating thickness range delimited by the
two calibration foils; on the other, however, 2 calibration foils are
needed to calibrate the upper measurement range of the gage.
To calibrate the upper measurement range of the gage, you need to use
the following foil pairs:
• Measurements on Fe
1
base material:
Foil 1:
≤ 350 µm, foil 2:  700 µm
• Measurements on NF
2
base material:
Foil 1:
≤ 750 µm, foil 2:  1150 µm
• 1 Foil (calibration steps (Zero and) one time Foil),
in Enhanced gage variants, only available with corrosion batch template package upgrade
The same routine as Zero + 1 Foil, but the zero measurement step will
skipped when recalibrating. Useful for calibrations on rough surfaces,
e.g. in the corrosion protection region.
• 2 Foil (calibration steps (Zero and) two times Foil)
in Enhanced gage variants, only available with corrosion batch template package upgrade
The same routine as Zero + 2 Foil, but the zero measurement step can will
skipped when recalibrating. Useful for calibrations on rough surfaces,
e.g. in the corrosion protection region.
1. Fe = FE = Ferromagnetic material, e.g.: iron, steel alloys
2. NF = Nonferrous, electrically conducting material, e.g.: Al, Cu, Ms, …