Checkline LM6 - Manual (Page 4)

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2.0 CALIBRATION CURVES
NAME CALIBRATION CURVE DENSITY
Leather LD Leather of low density 0.55 g/cm³
Leather CR Leather chrome tanned 0.60 g/cm³
Leather MD Leather of medium density 0.65 G/CM³
Leather FOC
Leather free of chrome, fire
protection leather
0.70 g/cm³
Leather HD Leather of high density 0.75 g/cm³
Leather VHD Leather of very high density 0.80 g/cm³
Reference Only for checking the instrument
2.1 Selection of calibration curves
Due to different manufacturing methods and different densities of the leather there is no
standardised allocation of calibration curves.
In the above list of calibration curves you can find information regarding manufacturing
methods and density that enables a preselection of the calibration curve.
To ensure the best accuracy of your measurement, we recommend to carry out a
comparison measurement by kiln-drying (norm DIN 53304) once:
1. Take a leather pile of 10-15mm of the format A6 with average moisture content.
2. Measure the water content of this leather pile using all available calibration curves
and write down the measuring results of the different calibration curves.
3. Take the 2 top leather pieces of the pile and carry out a reference measurement
according to DIN 53304.
4. 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.