14 Operator‘s Manual for instrument types MP0R
Influencing Variables Taken into Consideration
4.4 Corrective Calibration
When necessary
• If the trueness is not met when making measurements on customer refer-
ence parts (customer standards), a Corrective Calibration should be per-
formed.
• When normalization is not sufficient to compensate for the influence.
Required Materials
Base = part made from substrate material. In geometry and substrate
material, this specimen should correspond exactly to the parts to be
measured. If
• For instrument types PERMASCOPE
®
and DUALSCOPE
®
,
Fe displayed: Utilizes the magnetic induction measuring method.
Base = ferromagnetic reference part without the coating to be measured
from customer's own production.
• For instrument types ISOSCOPE
®
and DUALSCOPE
®
,
NFe displayed: Utilizes the eddy current measuring method.
Base = non-magnetic reference part without the coating to be measured
from customer's own production.
Standard =
Calibration foil supplied with the instrument for the
entire range.
On the foil, the measurement area is marked with a circle.
Please Note!
Do not use the supplied metal sheet (NF/FE or ISO/NF) for base!!!
As a rule, the material properties will not correspond to the uncoated
specimen from customer‘s own production! Use it only for instrument check!
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