Checkline ETMPX - Manual (Page 18)

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7.5 Clearing the Memory
If values are stored in the memory, the DISPLAY shows the MEM
indicator.
To clear the memory:
Simultaneously press the MEM and RECALL keys. The mem indicator disappears from
the DISPLAY and all values stored in the memory have been deleted.
7.6 Memory Function HOLD
When the tension meter memory is empty, you can retain the last reading on the
DISPLAY by using the memory function HOLD.
To retain the last reading:
Press the RECALL / HOLD key once for about 1 second. The
DISPLAY shows the last readingand the “:” colon symbol.
To switch back to measuring mode:
Press the RECALL / HOLD key once for about 1 second. The tension meter switches
back to measuring mode.
7.7 Error Messages
1. The DISPLAY shows EEE. The upper limit of the tension range
was exceeded by more than 10%. Reduce the line tension.
OR
AUTO ZERO is no longer possible. Recalibrate the instrument following the
directions in Sec. 9.0.
2. The DISPLAY shows -E.E. The lower limit of the tension range
was fallen below by more than 10%. Properly insert the process
material.
3
Mem cN
2:2.8
Mem cN
EEE
Mem cN
-E.E
Mem cN
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8.0 STATIC VERIFICATION OF MEASURING ACCURACY
All tension meters are calibrated with standard materials—such as polyamide
monofilament (PA)—according to the factory procedure. The diameters are given in
section 1.0. 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 factory calibration has been proven to provide
the best results and is used for comparative purposes.
NOTE: Before beginning, make sure that the tension meter is factory calibrated
for a vertical material path. The required reference weight is available.
Verification procedure:
1. Switch on the tension
meter.
2. Hang a weight
which corresponds
to the tension to be
measured from the
measured material,
vertically, as shown.
NOTE: Pay attention to the correct unit of measure cN or g (gram).
3. Press the LEVER down all the way down and thread the process material through
the MEASURING and GUIDE ROLLERS as described in section 4.1, then
slowly release pressure on the LEVER until the GUIDE ROLLERS return to
their original position.
4. Before verifying the calibration, move the instrument slowly up and down to
compensate for possible mechanical friction losses and thus ensure repeatability of
the measurements.
5. The tension value shown on the DISPLAY should be equal to the value of the
suspended weight (pay attention to the measuring units).
If this procedure shows a deviation, you can recalibrate the instrument following the
directions in Sec 9.0.
NOTE The tension meter has been calibrated dynamically according to the factory
proceduyre. therefore, differences may aoccur betwen static and dynamic readings.
MEASURING- and
GUIDE ROLLERS
Process
material
Weight