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To perform the calibration procedure
- Select a new material or edit an existing one (by re-entering the values) from the
„material“ menu.
- Enter a designation (you can use the software supplied with the tension meter
alternatively).
While performing the calibration, the tension meter must be fixed in such a way
that the material to be measured runs smoothly between the guide rollers and the
measuring roller.
The display gives detailed information on the calibration.
3.6.2 Calibration procedure
Calibrations of the tension meter are performed according to the SCHMIDT factory
procedure using weights that correspond to 10 %, 50 %, and 90 % of the measuring ran-
ge. In 95 % of all industrial applications, the SCHMIDT calibration has been proven
to provide the best results. In particular, it is suitable for comparative purposes.
If the material to be measured differs significantly from the SCHMIDT calibration material
in material type, diameter, rigidity, shape, etc., we recommend to perform a calibration
using customer-supplied material. In addition to the factory-preset material, you can save
up to 3 additional materials.
Calibration Units and Calibration Points
- The device can be calibrated in centinewton (cN) or gram (g). Although the unit of the
calibration weights has to correspond with the unit choosen in the menu „calibration“
- For the calibration of the tension meter, three calibration weights are used. For
example, if you select 10 %, 40 %, 70 % for the weights for the static calibration must
correspond to 10 %, 40 % and 70 %, for the dynamic calibration 20 %, 80 % und
140 % of the measuring range.
In this example, you need the following weights for the ETX-100:
Static calibration in Newton: 10 cN, 40 cN, and 70 cN
Static calibration in Gram: 10 g, 40 g, and 70 g
Dynamic calibration in Newton: 20 cN, 80 cN, and 140 cN
Dynamic calibration in Gram: 20 g, 80 g, and 140 g
The measured values are displayed in the unit set in the „Settings“ menu, inde-
pendent from the unit that was used to calibrate the material characteristic.
So that they are available when you verify the calibration later or repeat the
calibration after a factory reset.
Material to be
measured
Unit
Calibration points
Yarn
cN
5 %, 50 %, 90 %
e. g.
