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Procedure for Adjusting the Off-Center Loading Error (Strain Gauge)
Note: After calibration/adjustment of the off-center loading error, you must check the
span and linearity and adjust as required.
On models CP2201, CP4201, CP6201, CP8201, GP8201, the off-center loading error
should be adjusted by careful fi ling at appropriately thin places.
First, remove the weighing support. On subsequent models, this adjustment can be
carried out through the long holes in the weighing pan support with an angled
round fi le. It is then no longer necessary to remove the weighing pan support.
- Carry out the adjustment by careful filing at the positions described.
- Only file negative errors, preferably at the upper thin sites
- To avoid distorting the adjustment results on models with a higher resolution
(60000 - 75000 increments), wait a few seconds after filing so that the thin
sites can „cool down.“
- After each adjustment, recheck the off-center loading error, as the force paralle-
logram of the measuring spring will also change the error in the non-adjusted
corners
- Check the off-center loading error once more after a longer period of time
1. Adjusting the Off-Center Loading Error: Front - Back
Negative error in the front:
(Captions: Weighing pan, right, left, front, back)
- File the edges of the upper thin site evenly on the left and right, moving inwards.
Small, inwardly tapering surfaces areas will be produced at the thin site „A“
Negative error in the back:
- File the edges of the upper thin site evenly on the left and right, moving inwards.
Small, inwardly tapering surfaces areas will be produced at the thin site „B“
back
right
loadplate
front
left
dms3ae.eps
dms3be.eps
A
B
back
right
loadplate
left
front
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