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Weightec 348 Manual

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Switch functions and values : Switch 33 determines the direction of the correction: positive of negative.
Adjusting : In daily praxis the compensation is done on empiric bases. After span and
overload adjustment with 100% load on the scale, the scale is unloaded down
to 50% . De deviation that now is read may be linearised by starting with the
rightmost switch setting at “on” (37). The next larger effect is sw. 37 “off” and
sw. 36 “on”, followed by both the switches “on”. According to this binary
programmed values may be continued with sw. 35 and sw. 34 until the required
compensations is achieved
4.7 ADJUSTING: DAMPING FILTERS
SWITCH 49 - 52
SEE TABLE 2
System : A settable two pole integrating filter may improve the stability of the weight
presentation.
Selectable in 8 binary steps from 0.13 Hz up to 4.03 Hz. Since the A/D
converter already is equipped with basic active damping, this selectable filter
is meant for use in less favourable conditions of a scale.
Under good conditions and with a properly built scale it should not be
necessary to bring these filter into action.
Switch functions : The switches 50 up to 52 have binary values and may be adjusted in the same
way as the non linearity switches (ze table above and Ccapter 11.2 table 2).
Switch 50 (MSB) has the highest value, followed by sw.51 and sw. 52 .
With all switches “off” there is not damping.
Calibration switch 49 : With switch 49 “on” the 348 is brought into the calibration mode, that causes a
2 x higher damping of the filters to achieve a extra stabilised reading, as well
as switch on of the back lightning of the internal display.
Manual 348-2 V 3.1 Page 17 01-06-2007
Switch
Correction
positive
33 34 35 36 37 %
1 0 0 0 1 + 0.006
1 0 0 1 0 + 0.,012
1 0 0 1 1 + 0.018
1 0 1 0 0 + 0.024
1 0 1 0 1 + 0.030
1 0 1 1 0 + 0.036
1 0 1 1 1 + 0.042
1 1 0 0 0 + 0.048
1 1 0 0 1 + 0.054
1 1 0 1 0 + 0.060
1 1 0 1 1 + 0.066
1 1 1 0 0 + 0.072
1 1 1 0 1 + 0.078
1 1 1 1 0 + 0.084
1 1 1 1 1 + 0.090
Switch
Correction
negative
33 34 35 36 37 %
0 0 0 0 1 - 0.006
0 0 0 1 0 - 0.012
0 0 0 1 1 - 0.018
0 0 1 0 0 - 0.024
0 0 1 0 1 - 0.030
0 0 1 1 0 - 0.036
0 0 1 1 1 - 0.042
0 1 0 0 0 - 0.048
0 1 0 0 1 - 0.054
0 1 0 1 0 - 0.060
0 1 0 1 1 - 0.066
0 1 1 0 0 - 0.072
0 1 1 0 1 - 0.078
0 1 1 1 0 - 0.084
0 1 1 1 1 - 0.090
… 17 …


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