Rice Lake Legend 480-2A, Technical Manual

Page: 53 / 85

46 480 Legend Series
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 sub-menu is used to calibrate the 480 . See Section 3.2.4 for the calibration menu structure and
parameter descriptions. To calibrate the indicator using the front panel:
1. Remove the setup switch access screw from the back of the enclosure.
2. Insert a non-conductive tool into the access hole and press the configuration switch. Indicator display
changes to show
CONFIG
(see Figure 2-1).
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
or press to view or edit the existing value.
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 Section 1.7 on page 4 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
or press to view or edit the existing value.
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.
Note