8
Off-Center Load
Checking the Off-Center Load
– Center the test weight (see “Service Specifications,” page 13) on the pan
(position 1) and press =
“0.0” is displayed (depending on model and settings)
– Place the test weight on positions 2, 3, 4 and 5 in sequence
– The absolute values displayed for all 4 positions must be within the limits
listed in the service specifications (see page13)
– If the off-center load error exceeds the tolerance listed in the service
specifications in any of these 4 positions, the off-center load should be
adjusted with the greatest positive error value (see “Adjusting the Off-
Center Load” below)
Adjusting the Off-Center Load
– Remove the pan
– Remove the pan support from the strain-gauge load cell (2 Allen screws in
the lower part of the pan support) and place it to one side
– Correct the off-center load by filing on one of the thin parts. Always file
the thin part that corresponds to the greatest off-center load error.
– Place the pan support on the load cell and fasten it, align the pan support
arms approximately with the off-center load bolts, and place the pan on
the pan support.
– Check the off-center load (see “Checking the Off-Center Load” above)
and adjust if necessary
Linearity
Adjust the linearity using the service software
Please refer to the service software description.
Span Adjustment
Note: There are two ways to perform span adjustment:
1. As described in the manual
2. Using the service software
– Select the menu code “External adjustment accessible” (code 1 5 2)
– Unload the scale and, if necessary, press = to zero the display
– Press and hold the = key for >3 sec. to activate the calibration routine
– The weight value of the required calibration weight is displayed without
weight unit; e.g., “+ 5.000”
– Center the prompted weight on the pan (here: 5.000 kg)
Important: The scale will only accept a weight that is within a tolerance range of
approximately 2% of the nominal weight. Any greater error can only be
adjusted using the service software.
– After the adjustment procedure, the weight is displayed with weight unit
(e.g., “+ 5.000 kg”)
– Remove the calibration weight
– Check the span again and adjust it if necessary
Vorein10.EPS
Vorein11.EPS
Vorein09.EPS
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5
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PM-b-11.EPS
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