Brecknell SBI-240, Service Manual

Page: 55 / 78

SB
I-240
Service Manual 53
5.3 Linearity Calibration
1. When
LINE
is selected, press the TARE/PRESET key to access linearity
calibration.
0% weight will be displayed after
CAL.P0
is shown.
2. Remove all weight from the scale. Press the TARE/PRESET key to confirm
and calibrate the zero point.
The zero weight will flash. After calculating the reasonable zero-point
data, the zero weight will become steady.
When the first default standard weight is displayed after CAL.P1 is
shown, it will be calibrated on standard weight for the first point.
3. Place the corresponding weight (more than 10%FS weight) onto the scale.
The default standard weight is 100%FS.
4. Use the keys to enter the value of the loaded weight. Before
entering this value, you can press and hold the UNIT/DATA key to change the
unit of measure to kg or lb.
5. Press the TARE/PRESET key to confirm the entry.
The indicator will flash the input standard weight. When this weight
number becomes steady, it means the stable and reasonable data
corresponding to the standard weight has been received. After this, the
indicator will automatically continue to the next step. If this point cannot
be calibrated correctly (E.g. the weight load on the scale is too small, the
input data is incorrect), it will display
CAL.Er
and return to step 2 for re-
calibration.
6. When
End.y
is shown and y is flashing, enter a command to exit calibration or
go on to the next calibration.
7. Use the key to select yes or no. Use the TARE/PRESET key to
confirm.
If yes is selected, you will be directed go to step8 to end calibration.
If no is selected, continue to the next step.
8. When 100%FS weight is displayed after
CAL.P2
is shown. This is the
standard weight calibration for the second point. Place corresponding weight
(more than 10%FS weight, and larger than the weight used on CAL.P1) onto
the scale.
9. When
End.y
is shown and
y
is flashing, use the key to select yes
or no. Use the TARE/PRESET key to confirm.
10. When the third standard weight displayed after
CAL.P3
is shown. This is the
standard weight calibration for the third point. Place corresponding weight
(more than 10%FS weight, and larger than the weight used on CAL.P2) onto
the scale.