0 calibration, 1 front panel calibration, Calibration – Rice Lake 480 Legend Series Digital Weight Indicator Installation Manual User Manual
Page 41
Calibration 37
4.0 Calibration
The 480 can be calibrated using the front panel or the Revolution
®
configuration utility. Each method consists of
the following steps:
• Zero calibration
• Entering the test weight value
• Span calibration
• Optional rezero calibration for test weights using hooks or chains.
The following sections describe the calibration procedure for each of the calibration methods.
4.1 Front Panel Calibration
The CALIBR submenu is used to calibrate the 480. See Section 3.3.3 for the calibration menu structure and
parameter descriptions. To calibrate the indicator using the front panel:
1. Remove the large fillister head screw from the back of the enclosure.
2. Insert a nonconductive tool into the access hole and press the configuration switch. Indicator display changes
to show
CONFIG
3. Press
until
CALIBR
is displayed.
4. Remove all weight from the scale platform. If the test weights require hooks or chains, place the hooks or
chains on the scale for zero calibration.
5. Press
to
WZERO
.
6. Press
to
CAL
.
7. Press
to
ENTER
.
8. Press
to calibrate zero. The indicator displays
*CAL*
while calibration is in progress. When complete, the
mV value for the zero calibration is displayed.
9. Press to save the zero calibration value and go to
CAL
.
10. Press
to
WZERO
.
11. Press
to
WVAL
.
12. Press to show the test weight value.
13. Press to edit value using the procedure shown in Figure 3-3 to enter the actual value of the test weights to
be used for the span calibration. Press
to store the entered
WVAL
value.
14. Press
to
WVAL
.
15. Press
to
WSPAN
.
16. Press
to
CAL
.
17. Press
to
ENTER
.
18. Place test weights on the scale and press
to calibrate span. The indicator displays
*CAL*
while calibration
is in progress. When complete, the net millivolt value of the test weight for the span calibration is displayed.
Net mV value is equal to the raw mV value at the span minus the mV value captured for zero.
19. Press to save value and go to
CAL
.
20. Press
to
WSPAN
. If using chains or hooks for your test weights, proceed with step 21.
If no chains or hooks were used, proceed with step 23.
21. Press
to
REZERO
. The REZERO function is used to remove a calibration offset when hooks or chains are
used to hang the test weights.
22. Remove the hooks or chains used during calibration and remove the test weights from the scale. Press .
ZERO
will flash. With all weight removed, press
to rezero the scale. This function adjusts the zero and
span calibration values. The indicator displays
*CAL*
while the zero and span calibrations are adjusted.
23. Press to return to the CALIBR menu.
24. Remove all weight from the scale. Press until the display reads
CONFIG
. Press to exit configuration
mode.
The IN IZR (initial zero) parameter may affect the weight display reading immediately following calibration.
Note
Note