To do Two point calibration we need to first do zero point calibration on uncoated surface, then single point calibration on a calibration foil and then one more single point calibration on a calibration foil of a different thickness ( the thicker one should be 1.5 times as thick as the thinner one is possible).
This method is especially suitable for taking measurements on rough shot-blasted surfaces or for high precision readings.
It is advised to take multiple readings, this will considerable reduce the effect of scattering that occurs during calibration of upper and lower values.
Негізгі бет Metravi CTG-01 Two Point Calibration
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