Rice Lake Static Weighing - Manual (Page 40)

36 CW-90/90X Checkweigher
4.0 Calibration
The CW-90/CW-90X can be calibrated using the front panel, EDP commands, or Revolution ® .
Note
Calibration can be performed in two places within the menu: the CALIBR menu shown in Figure 4-1 and the
SCALE submenu shown in Figure 3-5 on page 18. The CALIBR menu is a “quick access” calibration; for more
in-depth scale setup and calibration, use the menus found under SETUP
» CONFIG » SCALE.
Calibration consists of the following steps:
• Zero calibration
• Entering the test weight value
• Span calibration
• Optional five-point linearization
• Optional rezero calibration for test weights
using hooks or chains.
Note
The CW-90/CW-90X requires the WZERO and WSPAN points to be calibrated. The linearity points are optional,
but must NOT duplicate zero or span. During calibration, the ENTER key acts as a data entry confirmation key.
It also acts as an EXECUTE key, and accepts the value if calibration was successful.
WZERO
Calibrating, please wait
Calibrating, please wait
Display and edi
Press Enter
to calibrate zero
t
test weight value
WVAL WSPAN
Press Enter to
remove offset from
zero and span
calibrations
REZERO WLIN
POINT–> 1 POINT–> 2 POINT–> 3 POINT–> 4 POINT–> 5
Same as POINT-> 1
WGT 1
number
Calibrating, please wait
Press Enter
to calibrate span
EXIT T&D TEST SETUP AUDIT XXXXXXX CALIBR BRIGHT
Press Menu
to cancel
Press Menu
to cancel
Previous A/D raw
counts are shown
Previous A/D raw
counts are shown
ACCUM
Only displayed if
turned on
from Setup menu
CAL1
ID
Only displayed if
turned on
from Setup menu
Figure 4-1. Calibration (CALIBR) Menu
4.1 Front Panel Calibration
1. Press the MENU button, then press until the
display reads CALIBR (see Figure 4-1).
2. Press Enter or to go to the WZERO parameter.
3. Press Enter or to view the A/D count. Press
Enter Key to Calibrate WZERO.
Note
Note
Note
If do not want to calibrate zero, press Menu to
exit.
4. The indicator displays CALIBRATING, PLEASE
WAIT while calibration is in progress. When
complete, you are advanced to the next prompt
(
WVAL ).
To view the new A/D count, repeat Step 3, but
instead of pressing Enter while viewing the
value, press Menu to exit.
5. With WVAL displayed, press Enter to display the
stored calibration weight value. Use the
procedure shown in Figure 4-2 to enter the
value of the test weights used for the span
calibration. Press Enter to store the
WVAL value
and advance to WSPAN .
6. With WSPAN displayed, press Enter or to
view the A/D count. Place test weights on the
scale equal to WVAL. Press Enter to calibrate
WSPAN.
If do not want to calibrate span, press Menu to
exit.
7. After Enter is pressed, the indicator displays
CALIBRATING, PLEASE WAIT . When complete,
you are advanced to the next prompt ( WLIN ).
8. To view the new A/D count, navigate back to
the WSPAN and repeat step 6; however,
instead of pressing Enter while viewing the
value, press Menu to exit.