A&D GF-A Series, Maintenance Manual

Page: 41 / 52

GX-A/GF-A Maintenance manual
Page 39
6.10 Fine Adjustment
1. Corner load adjustment
In the D2 data mode, place an external mass on the center of the pan and at four positions
half the distance from the center of the pan to the corner edge shown in a figure below.
Verify that the difference between the values at the center and at each position is within the
specifications.
About the adjustment method, refer to the
“2.Corner load adjustment” of “6.8 Coarse
Adjustment” .
When adjusting the corner load error by turning the four corner adjust screws, zero point drift
may be generated. After turning the four corner adjust screws, load the mass listed in table
below on the front, back, left and right of the weighing pan, and work after the drift of the
center zero point is confirmed to be within the ±2 digits.
Model
(GX-A/GF-A series)
Masses
Specifications
Drift value
of Zero point
123
(Only GF-A)
100g ±0.006g
±0.002mg
203
303
200g
±0.008g
403 ±0.007g
603 300g ±0.007g
1003
500g
±0.007g
1603 ±0.008g
1202
(Only GF-A)
1kg ±0.06g
±0.02mg
2002
3002
2kg
±0.08g
4002 ±0.07g
6002 3kg ±0.07g
10002 4kg ±0.10g
6001 3kg
±0.3g
10001 4kg
3
1,6
2