Checkline ETB, Руководство по эксплуатации

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6.3 Verifying the calibration
When verifying the calibration, make sure to select the same material, calibration
position and calibration points as used for creating the associated material characteristic.
Otherwise, the precision of the measurements will not be sufficient.
The tension meter has been calibrated on material 1 according our factory procedure for
a vertical material path and cannot be deleted or overwritten. The diameter and material
is given in chapter 2. Calibrations of the tension meter are performed according to the
factory procedure using weights that correspond to 10%, 50% and 90% of the measuring
range.
1. Attach a weight vertically to the material to be measured that corresponds to the
tension to be measured (make sure to select the correct unit). The weight must hang
freely. (Always use a fresh portion of the material to be measured.)
2. Insert the material as described in chapter 5.2.
Do not let the lever snap back as this could affect the calibration
and damage the instrument.
3. Before verifying the calibration, move the instrument slowly up and down to
compensate for any mechanical friction losses and thus ensure repeatability of
the measurements.
4. The tension value shown on the display should be equal to the mass of the
suspended weight.
NOTE:
If the verification of the calibration shows a deviation beyond the allowable
tolerance so that reliable operation is no longer possible, the instrument needs to be
re-calibrated or returned to the factory for repair.