Rice Lake 880 Performance Series Indicator/Controller Technical/Service Manual - Manual (Page 64)

58 880 Technical/Service Manual
4.1 Front Panel Calibration
1. Put the indicator in setup mode using the setup switch on the back of the unit, see Figure 3-1, (or use
MENU if audit trail is enabled), and navigate to CALIBR (see Figure 4-1).
2. Press
TARE
or to go to the
WZERO
parameter.
Note
Note
Note
WZERO is used for most normal calibrations with an empty scale. If a special situation exists, where a LAST or
TEMP zero may be used, refer to Section 4.2 or Section 4.3 for more information before performing a WZERO
calibration.
3. Press
TARE
or to view the previously captured A/D count value for zero.
4. R emove 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
TARE
to Calibrate WZERO
.
If calibration of zero is not required, press
MENU
to exit.
6. The indicator displays
CALIBRATING, PLEASE WAIT
while calibration is in progress. When complete,
WVAL
is displayed.
To view the new zero A/D count, repeat Step 3, but instead of pressing Enter while viewing the value, press
Menu to exit.
7. With
WVAL
displayed, press
TARE
to display the stored calibration weight value.
8. To edit the value:
• Press or to select the digit.
• Press or to increment or decrement the value.
• press
TARE
when the value is correct.
• Press or to move the decimal point position.
9. Press
TARE
to store the
WVAL
value and advance to
WSPAN
.
10. With
WSPAN
displayed, press
TARE
or to view the previously captured A/D count value for span.
11. Place test weights on the scale equal to WVAL.
12. Press
TARE
to calibrate
WSPAN
.
Note
Note
If calibration of span is not required, press
MENU
to exit.
13. After
TARE
is pressed, the indicator displays
CALIBRATING, PLEASE WAIT
. When complete
WLIN
is
displayed.
To view the new span A/D count, repeat Step 9, but instead of pressing Enter while viewing the value, press
Menu to exit.
14. When calibration is complete press MENU to return to the weigh mode.