Checkline PM4 - Manual (Page 4)

 Electromatic Equipment Co., Inc
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4.0 CONTACT-FREE TEMPERATURE SENSOR
The back side of the humimeter PM4 contains
an embedded temperature sensor for the
contact-free temperature measurement below
the sensor. This ensures the determination of
the temperature of the product within seconds
and
consequently the temperature
compensation of the displayed water content.
The sensor must not be covered by a hand or
any other object!
5.0
CALIBRATION CURVES
name paper type density
600 paper Very low density paper 600 kg/m³
650 paper Low density paper 650 kg/m³
700 paper Low density paper 700 kg/m³
750 paper Fluting, Schrenz 750 kg/m³
800 paper Newsprint paper 800 kg/m³
850 paper Kraftliner brown 850 kg/m³
900 paper Kraftliner White Top, Testliner brown 900 kg/m³
950 paper Testliner white, copy paper 950 kg/m³
1000 paper Copy paper, LWC raw 1000 kg/m³
1050 paper Copy paper calendered 1050 kg/m³
1100 paper Copy paper calendered 1100 kg/m³
1200 paper LWC calendered 1200 kg/m³
1300 paper Flysheet paper 1300 kg/m³
1400 paper Flysheet paper 1400 kg/m³
1500 paper Flysheet paper high density 1500 kg/m³
1600 paper Flysheet paper very high density 1600 kg/m³
Empty 1700 For creation of customer calibration curve
Empty 975 For creation of customer calibration curve
Empty 550 For creation of customer calibration curve
reference ! Only for checking the instrument !
6.0
LIST OF CALIBRATION CURVES
By pressing one of the arrow keys in the measuring
window for approx. 3 seconds a list of all available
calibration curves opens. Now you can select your
desired curve using the arrow keys and confirm by
pressing .
 Electromatic Equipment Co., Inc
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17.0 COMMON REASONS FOR INCORRECT MEASUREMENTS
• Wrong calibration curve
Double-check the correct selection of the calibration curve before measuring.
The calibration curve „reference“ must NOT be used.
• Inadequate thickness of the paper pile
A single sheet of paper must NOT be measured. Make sure that the paper pile
below the steel clamps has a thickness of at least 100 mm.
• Electro conductive material
Every metallic object as well as electro conductive packing material e.g. paper
coloured by soot or wire has a negative effect on the accuracy of your
measurement. Make sure that in an area of 20 cm below the sensor steel
clamps there is no such material.
• Product temperature out of application range
The application range is between 0 and +60°C.
• Discrepancy in temperature between device and material
Please ensure that the device and the material under test are being stored at
nearly the same temperature before measuring. A high temperature difference
has a negative effect on the stability of the measurement results.
• Measurement at the front side
A measurement at the front side of a paper roll will bring different measuring
results. For that you have to select a different calibration curve.
• Bended steel clamps
If the steel clamps (measuring area) are bended you might get wrong measuring
results.
Please note:
• After measuring at the running paper roll for a longer period the steel clamps will
get hot – don´t touch! => risk of getting burned!
• Measuring fine paper at the running roll may cause pressure marks on the paper
=> for possible damages at the paper we refuse any liability.