Five-Point Linearization; Rezero - Rice Lake 880 Technical And Service Manual

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 you choose not to perform linearization, skip the
values have previously been entered, these values are reset to zero
linearization, follow the procedure below.
Note
The linearity points must be less than the WSPAN point.
1. With displayed, press
WLIN
2. Press again,
WGT1
3. Press to edit the value:
• Press or to select the digit.
• Press or to increment or decrement the value.
• Press or to move the decimal point position.
TARE
• Press
4. Place test weights on the scale and press
counts for the linearization point.
5. Press again to calibrate. The indicator displays
TARE
progress. When complete,
6. Press to
POINT1
7. Repeat for up to five linearization points. To exit the linearization parameters, press
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 the menu.
CALIBR
1. With displayed, press
REZERO
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 (
3. With all weight removed, press
value. The indicator displays
When complete,
Note
For more information on LAST or TEMP see Section 4.4 or Section 4.5.
MENU
4. Press to return to weigh mode.
52 880 Installation Manual
TARE
to go to the first linearization point (
is displayed.
when the value is correct. The indicator will display
is displayed.
WGT1
, then press to
POINT2
or
TARE
to rezero the scale. This function acquires a new ZERO calibration
TARE
Calibrating, Please Wait
is displayed.
LAST
WZERO
. The indicator will display the previously captured A/D
TARE
Calibrating, Please Wait
).
to access the rezero function.
) calibration.
WZERO
while the zero and span calibrations are adjusted.
parameter; if linearization
WLIN
during calibration. To perform
).
POINT1
.
CAL1
while calibration is in
to return to .
WLIN
to return