4-1-2.Storing calibration Values
If the gauge is calibrated for a particular purpose, the calibration values
will be stored in memory until changed.
NOTE
: The calibration procedure should be restarted from the beginning
if:
-An incorrect reading has been taken.
-An incorrect command has been entered.
-The gauge has been switched off.
4-1-3.calibration Example
Calibration is the most important requirement for accurate measurement.
The more closely the calibration sample matches the product sample,
the more accurate the calibration, and therefore the reading, will be.
If for instance, a product is to be measured on a steel cylinder, quality
ST37(mild steel), diameter 6mm. the calibration of the uncoated sample
must take place on a steel cylinder of similar quality with the same
diameter.
The calibration sample must correspond to the product sample in the
following ways:
-Curvature radius
-Substrate material properties
-Substrate thickness
-Size of measuring area
-The point at which the calibration is made on the calibration sample
must always be identical with the point of measurement on the product
itself, especially in the case of corners and edges of small parts.
4-1-4.High-Accuracy Calibration
To achieve high-accuracy readings, it is advisable to log calibration
values (both zero values and calibration foil values) several times in
succession. In this way, the gauge will automatically establish a mean
calibration value. For more details see 4-2 special hints for calibration.
The high-accuracy calibration is an obvious advantage when calibrating
on uneven, e.g. shot-blasted, surfaces.
4-1-5.Cleaning the Measuring Point
Before calibration the measuring point the probe tip must be free from
grease, oil, scraps of metal, etc. The slightest impurity will affect
measurement and distort readings.
4-2.Special Hints for calibration
The basic calibration stored in the gauge should only be used for
measurements on even surfaces. i.e. on steel components made of
conventional steel (mild steel) or on aluminum components.
