LINK Systems System 1100 Tonnage Monitor - Manual (Page 90)

UNBALANCED LOADS AND SCALE FACTOR
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8-4
0.635
Reprogram the machine rating number from the original 100 ton value
programmed during calibration to 112 tons.
Next calculate the new calibration numbers required to remain
calibrated with the new machine rating number. These are:
100
N1
C' = ----- * 144 . 129
112
100
N2
C' = ----- * 148 . 132
112
Round off calibration numbers calculated as above to the nearest
whole number. Adjust the calibration numbers to the new values
calculated as above, i.e., 129 for channel 1 and 132 for channel 2
in this example.
Example 4. Following the instructions in Section 6 of this manual
for the four channel System 1100 unit on the machine of Example 2
resulted in a machine rating number of 100.0 tons being programmed
into the unit. The calibration numbers were found to be 526 for
channel 1, 532 for channel 2, 535 for channel 3, and 524 for
channel 4. It is desired to shift the machine rating alarms from
31.2 tons for each channel to 40 tons. To do this, calculate the
new machine rating number (scale factor). The required number is:
40 tons
MACHINE RATING NUMBER = --------- = 128 tons
0.3125
Reprogram the machine rating number from the original 100 ton value
to 128 tons.
Next, calculate the new calibration numbers for each channel.
These are:
100
N1
C' = ----- * 526 . 411
128
100