Rice Lake IQ Plus 210 Digital Weight Indicator - Manual (Page 25)

Calibration 21
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
RIGHT 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
ENTER 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
ENTER again to save the
rezero value and return to the REZERO
prompt or use the procedure shown in
Figure 4-2 to edit the value. When done,
press
RIGHT to return to the CALIBR
menu.
7. Press the setup switch 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 on page 5 for
EDP port pin assignments; see Section 5.0 on page 22
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.
2. Send the WZERO EDP command to calibrate
zero. The indicator displays °CAL° while
calibration is in progress.
3. Send the WVAL command to enter the test
weight value in the following format:
WVAL=nnnnnn<CR>
4. Place test weights on scale equal to the
specified WVAL.
5. Send the WSPAN EDP command to calibrate
span. The indicator displays °CAL° while
calibration is in progress.
6. To remove an offset value, clear all weight
from the scale, including hooks or chains used
to hang test weights, then send the REZERO
EDP command. The indicator displays
°CAL°
while the zero and span calibrations are
adjusted.
7. Send the KEXIT EDP command to exit setup
mode.
4.3 Revolution ™ Calibration
To calibrate the indicator using Revolution, the
indicator must be in setup mode with the EDP port
connected to a PC running the Revolution configuration
utility. Use the following procedure to calibrate the
indicator:
1. Select Calibrate Indicator from the Revolution
main menu.
2. On the Weight Calibration display, select the
indicator model ( IQ+210 ) and communications
port then click OK .
3. Revolution uploads calibration data from the
indicator then presents the information in a
display like that shown in Figure 4-3.
4. Enter the Value of Test Weight to be used for
span calibration then click OK .
5. The Zero Calibration dialog box prompts you
to remove all weight from the scale. Clear the
scale and click
OK to begin zero calibration.
NOTE: If your test weights require hooks or
chains, place the hooks or chains on the scale
for zero calibration.
6. When zero calibration is complete, the Span
Calibration dialog box prompts you to place
test weights on the scale for span calibration.
Place tests weights on the scale then click
OK .
7. The Rezero dialog box prompts you to remove
all weight, from the scale (including hooks or
chains). Remove the weights then click
OK .
8. When calibration is complete, the New
Settings fields of the Weight Calibration
display are filled in. Click Exit to save the new
values and return to the Revolution main menu;
to restore the previous calibration values, click
Restore Settings .
Figure 4-3. Revolution Calibration Display