
Calibration 59
4.1.1 Five-point linearization
Five-point linearization (using the WLIN parameter) provides increased scale accuracy by calibrating the indicator
at up to five additional points between the zero and span calibrations.
Linearization is optional: if choosing not to perform linearization,
skip the WLIN parameter; if linearization values
have previously been entered, these values are reset to zero during calibration of
WZERO. To perform linearization,
follow the procedure below.
The linearity points must be less than the WSPAN point.
1. With WLIN displayed, press
to go to the first linearization point (POINT1).
2. Press
again, WGT1 is displayed.
3. Press
to edit the value:
• Press
or to select the digit.
• Press
or to increment or decrement the value.
• Press
when the value is correct (the decimal point will be set in the following step).
• Press
or to move the decimal point position.
• Press
when the value is correct. The indicator will display CAL1.
4. Place test weights on the scale and press
. The indicator will display the previously captured A/D
counts for the linearization point.
5. Press
again to calibrate. The indicator displays Calibrating, Please Wait while calibration is in
progress. When complete,
WGT1 is displayed.
6. Press
to POINT1, then press to POINT2.
7. Repeat for up to five linearization points.
To exit the linearization parameters, press to return to WLIN.
4.1.2 Rezero
The rezero function is used to remove a calibration offset when an apparatus is used to hang the test weights. If no
other apparatus was used to hang the test weights during calibration, remove the test weights and press
to return
to the
CALIBR menu.
1. With
REZERO displayed, press
or to access the rezero function.
2. If an apparatus is used during calibration, remove it and the test
weights from the scale. The indicator will
display the AD count from the previous zero (
WZERO) calibration.
3. With all weight re
moved, press
to rezero the scale. This function acquires a new ZERO calibration
value. The indicator displays
Calibrating, Please Wait while the zero and span calibrations are adjusted.
When complete,
LAST is displayed.
For more information on LAST or TEMP see Section 4.2 or Section 4.3.
4. Press
to return to weigh mode.
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