9
- Push the thumb piece or special lever as far as it will go in the direction indicated by
the arrow.
- Place the process material in the opening between the disk screw and the
cap screw of the material thickness compensator.
- Secure the process material ends under the sample holding clip.
-
Slowly
let the thumb piece or special lever
slide return
into its original position.
It is important to assure that the process material runs smoothly between the
roller guides and the measuring roller.
Use of the Material Thickness Compensator
fig. 3.2a
Thick process material
Thin process material
X= Offset of the outer rollers caused by different material diameter
Process material
Sample holding clip
Disk
Disk
fig. 3.2c
The 3-roller system for tension measurement relies on the displacement of the middle
roller to give an indication of the line tension. As the material thickness changes, there
will be a change in the tension reading, even when the line tension has not changed.
To compensate for this effect, high-range instruments are usually equipped, as
necessary, with a material thickness compensator which automatically shifts the outer
rollers. Insert a sample of the material to be measured, or any other sample that has
the same diameter, in the material thickness compensator.
To determine whether the material thickness compensator needs to be used for a
specific application, we recommend to check the calibration with and without process
material in the material thickness compensator (see Chapter 3.4).
3.2 Material Thickness Compensator
(Only used at instruments with material thickness compensator)
It is essential that the thumb piece return slowly to its initial position.
Any uncontrolled snap-back may affect calibration and may also damage
the instrument.
It is important to assure that the process material lies precisely between the
instrument`s two visible disk-like anvil surfaces of the material thickness
compensator.
Inserting the process material
