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DMP10 / DMP20 Calibration
Position of the measuring position on the specimen, such as distance from the
edge, hole, platform, or step
Surface roughness
9.1 Overview of calibration methods
Zero (zero point, calibration step Zero)
This is the simplest type of calibration and is used to calibrate the gauge to a refer-
ence point, the base material, which is called zero here (zero point). The measure-
ment is taken on a reference piece that has the same material and shape as the ac-
tual uncoated specimen to be tested. It consists only of the specimen base material
(magnetizable (FE) or non-magnetizable (NF), depending on the test method used).
Zero + 1 standard (calibration steps Zero and Std. 1)
A calibration using a calibration standard achieves the best measurement accuracy
in a narrow measurement range around the stated standard thickness. The calibra-
tion method Zero + 1 standard can be used only in the lower measurement range of
the gauge.
You can find the values available for the calibration standard in the probe data sheet.
Zero + 2 standards (calibration steps Zero, Std. 1 and Std. 2)
On the one hand, a calibration with 2 calibration standards achieves the best mea-
surement accuracy in the measurement range that is limited by the two calibration
standard values; on the other hand, however, 2 calibration standards are needed to
calibrate the upper measurement range of the gauge.
For a calibration with 2 foils, you can find the foil pairings in the probe data sheet.
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