Page 70
Operator‘s Manual FERITSCOPE
®
FMP30
Normalization, Calibration and Master Calibration
6.4
Master Calibration
The master calibration determines the coefficients of the master character-
istic and stores them in the EEPROM of the probe plug. These coefficients
determine the master characteristic, i.e., the correlation between the mea-
surement signal of the probe and the
-ferrite content.
The EEPROM of the probe plug includes memories for the coefficients of two
master calibrations. These two master calibrations differ in the following
manner:
Factory master calibration
One master calibration (factory master calibration) is performed at the fa-
cility of FISCHER with a very high precision using 5 calibration standards
(incl. 1 base). It cannot be deleted or overwritten by the user.
User Master Calibration
You can set up the user master calibration by yourself using 5 calibration
standards. This memory is empty when a new probe is supplied. Once the
user has set up his “own” master calibration in the manner described be-
low, he can overwrite or even deleted this calibration, if needed.
5 calibration standards are required to set up a user master calibration.
They are part of the optional probe-specific master calibration standard set.
The Xn values of one of these calibration standards must be within the pre-
scribed Xn range of the master calibration for all 4 Xn ranges to be “occu-
pied”.
To increase the measuring precision in a certain measurement interval of
the probe, up to 4 additional calibration standards with
-ferrite contents in
this interval can be used. This means that max. 5 calibration standards can
be in an Xn range of the user master calibration.
If the user master calibration is deleted and an new one is not set up, the
factory master calibration will be used automatically to make measure-
ments.
After setting up or deleting a user master calibration, all corrective
calibrations that have been set up with the respective probe will be
deleted. This means that after deleting the user master calibration and
continued measurements using the factory master calibration, a new
corrective calibration should be performed for each Application, if
necessary.
Содержание FERITSCOPE FMP30
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Страница 63: ...Page 58 Operator s Manual FERITSCOPE FMP30 Applications Fig 5 3 Example for linking of applications ...
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Страница 241: ...Coating Thickness Material Analysis Microhardness Material Testing ...