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%
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Mn
Mt
Mn
WG
Selection of calibration curve
Due to the countless number of paper types there is no
standardised allocation of calibration curves. The different
calibration curves refer to the different densities of paper or paper
rolls.
The list of calibration curves below shows suggestions for paper
types.
To ensure the best accuracy of your measurement you have to
carry out a comparison measurement using your online moisture
measuring system or by kiln-drying (according to DIN 287) once.
1.) Measure the water content of your paper (on the roll or the
pile) using all calibration curves that offer realistic results and
write down the measuring results of the different calibration
curves.
2.) Now please note the effective water content determined by
your online measurement system or carry out a reference
measurement according to EN ISO 287.
3.) Compare the determined reference water content with the
measuring results of the different calibration curves. Use the
calibration curve with the measuring result nearest to the
reference water content.
Info: The name of the calibration curve
can be modified to your specific paper name!
Determination of the reference water content
The humimeter PM3 determines the water content, which means that it
calculates the moisture referred to the total mass (EN ISO 287):
Mn: Mass of the sample before drying
Mt: Mass of the dried sample
%WG: Calculated water content
