Calibration - Rice Lake 880 Technical And Service Manual

4.0

Calibration

The 880 can be calibrated using the front panel, EDP commands, or Revolution
Calibration consists of the following steps:
• Zero calibration
• Entering the test weight value
• Span calibration
• Optional five-point linearization
• Optional rezero calibration for test weights using hooks or chains
• Optional last zero calibration
• Optional temporary zero calibration
880
The requires the WZERO and WSPAN points to be calibrated. The linearity points are optional; they must
Note
fall between zero and span, but must NOT duplicate zero or span. During calibration,
entry confirmation key. It also acts as an EXECUTE key, and accepts the value if calibration was successful.
....
....
SETUP
....
SCALE
....
....
CALIBR
WVAL
WZERO
Previous A/D raw
Display and edit
counts are shown
test weight value
Press Enter
to calibrate zero
Press Menu
to cancel
Calibrating, please wait
POINT1
WGT 1
Display and edit
test weight value
50 880 Installation Manual
WSPAN WLIN
Previous A/D raw
counts are shown
Press Enter
to calibrate span
Press Menu
to cancel
Calibrating, please wait
POINT2 POINT3
Same as POINT 1
CAL1
Previous A/D raw
counts are shown
Press Enter
to calibrate span
Press Menu
to cancel
Calibrating, please wait
Figure 4-1. Calibration (CALIBR) Menu
®
.
REZERO
Calibrating, please wait Calibrating, please wait
Press Enter to
Press enter to recall
compensate for
the last established
zero offset
pushbutton zero value
to allow calibration
without removing test
weights from the scale.
See Section 4.4
POINT4 POINT5
TARE
acts as a data
LAST TEMP
Calibrating, please wait
Press enter to
temporarily zero the
displayed weight of a
non-empty scale.
After span calibration
the previously
calibrated zero value
is used as the offset.
See Section 4.5