14
3.5 Error Messages
Error message 1:
- The DISPLAY shows
EEE
.
The upper limit of the measuring range was exceeded by more than 100%.
Reduce the applied load.
OR
AUTO ZERO is no longer possible.
Return the tension meter to the manufacturer for factory calibration.
Error message 2:
- The DISPLAY shows
.
The lower limit of the measuring range was fallen below by more than 100%.
Properly insert the process material.
OR
AUTO ZERO is no longer possible.
Return the tension meter to the manufacturer for factory calibration.
3.6 Dynamic Verification of Measuring Accuracy
All tension meters are calibrated with standard materials - such as polyamide monofila-
ment (PA) - according to the SCHMIDT factory procedure. The diameters are given in
Chapter 2. Any difference in process material size and rigidity from the standard material
may cause a deviation of the accuracy.In 95% of all industrial applications, the SCHMIDT
calibration has been proven to provide the best results and is used for comparative pur-
poses.The tension meter is factory calibrated for a vertical material path (fig. 3.7).
The tension meter has been calibrated dynamically according to the
SCHMIDT factory procedure.
Therefore, differences may occur between static and dynamic readings.
fig. 3.6
Line speed Vmax. = 100 m/min
Hang twice the weight (pulley effect) which corresponds to the
tension to be measured from the measured material, vertically,
as shown here. Please keep in mind to include the weight of
the lower deflection pulley when you calculate the suspended
weight. Pay attention to the correct unit of measure cN.
