Rice Lake SURVIVOR LV Series Livestock Ring Scale - Manual (Page 31)

Calibration 27
4.0 Calibration
The 590 AG Indicator can be calibrated using the front panel, EDP commands, or Revolution ® . 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.
XXXXXXX XXXXXXX
WZERO
*CAL*
Display and edit
zero calibration
A/D count value
Display and edit
test weight value
WVAL
*CAL*
Display and edit
span calibration
A/D count value
WSPAN
VERS PROGRM PFORMT SERIAL CALIBR CONFIG FORMAT
Press Enter to
remove offset from
zero and span
calibrations
REZERO
*CAL*
Figure 4-1. Calibration (CALIBR) Menu
4.1 Front Panel Calibration
To calibrate the indicator using the front panel, do the following:
1. Place the indicator in setup mode (display reads CONFIG ) and remove all weight from the scale platform.
If your test weights require hooks or chains, place the hooks or chains on the scale for zero calibration.
2. Press until the display reads CALIBR (see Figure 4-1). Press to go to zero calibration ( WZERO ).
3. With WZERO displayed, press to calibrate zero. The indicator displays *CAL* while calibration is in
progress. When complete, the A/D count for the zero calibration is displayed. Press again to save the
zero calibration value and go to the next prompt ( WVAL ).
4. With WVAL displayed, place test weights on the scale and press to show the test weight value. Use the
numeric keypad to enter the actual test weight, then press to save the value and go to span calibration
( WSPAN ).
5. With WSPAN displayed, press to calibrate span. The indicator displays *CAL* while calibration is in
progress. When complete, the A/D count for the span calibration is displayed. Press again to save the
span calibration value and go to the next prompt ( REZERO ).
6. The rezero function is used to remove a calibration offset when hooks or chains are 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 return to the CALIBR menu.
• If hooks or chains were used during calibration, remove these and the test weights from the scale. 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. When
complete, the adjusted A/D count for the zero calibration is displayed. Press to enter the value, then
press to return to the CALIBR menu.
7. Press until the display reads CONFIG , then press to exit setup mode.
4.2 EDP Command Calibration
To calibrate the indicator using EDP commands, the indicator EDP port must be connected to a terminal or
personal computer. See Section 2.3.3 for EDP port pin assignments; see Section 5.0 for more information about
using EDP commands.
Once the indicator is connected to the sending device, do the following:
1. Place the indicator in setup mode (display reads CONFIG ) and remove all weight from the scale platform.
If your test weights require hooks or chains, place the hooks or chains on the scale for zero calibration.