Page 6 - 1
CHAPTER 6: CALIBRATION
6.1
CALIBRATION OVERVIEW
The indicator is calibrated by following the procedures embedded in F16 (Zero) and F17
(Span) of the Setup Menu. Each procedure enters a value into the indicator's non-volatile
memory - F16 the zero value (deadweight) and F17 the span value (test weight). The
minimum test weight that can be used is 1% of full-scale capacity. After the two calibration
procedures are executed successfully, you should record both calibration values in Table 6-
1 using the F18 View procedure.
In the unlikely event that either value is lost while in the field, the setup menu makes
provisions for re-entering these values via F19 and F20, thus eliminating the need for re-
calibration with test weights.
NOTE:
This chapter assumes that the indicator is in Setup (“F”) Menu mode. If the indicator
is not in Setup Menu mode, refer to Chapter 3 for instructions.
6.2
ZERO CALIBRATION (F16)
1.
While in the Setup mode, scroll to "
F 16
", then scroll down once using the #2 key to
enter zero calibration menu. The display will momentarily show "
C 0
" followed by a
value. This value is the internal A/D count and can prove useful when trying to
troubleshoot setup problems.
2.
After making sure that there are no test weights on the platform, press the ZERO key to
zero out the displayed value.
3.
Press the NET/GROSS key to save the zero point value. The display will show
"
EndC0
" momentarily, then revert back up to F16. At this time, proceed to the F17
span calibration to complete indicator calibration.
6.3
SPAN CALIBRATION (F17)
1.
While in the Setup mode, scroll to "
F 17
", then scroll down once using the #2 key to
enter span calibration menu.
5.
The display will momentarily show "
C 1
" for the span calibration, followed by a value
with one flashing digit. This value will be zero with the Decimal Point parameter
selected in F10. Place the test weight on the weighing mechanism.
6.
Use the front panel keys to key-in the actual test weight value. There is no need to
enter a decimal point, since it is fixed on the display. If you make a mistake, press the
ZERO key to clear your entry and start over.
4. After entering the exact value, press the NET/GROSS key to save the value.
5. If the calibration was successful, the display will show "
EndC1
" momentarily, then
revert back up to F17. At this time it is suggested that the calibration values be
recorded for future use (see Section 6.4).
6. If the calibration was
not
successful, one of the error messages below will appear. Take
the indicated action to correct the problem, then perform a new calibration.
"
Err0
" - The calibration test weight or the keyed-in weight is larger than the full capacity
of the scale. Change the calibration test weight or check the input data.
"
Err1
" - The calibration test weight or the keyed-in weight is smaller than 1% of the full
capacity of the scale. Change the calibration test weight or check the input data.
"
Err2
" - The internal resolution of the scale is not high enough to accept the calibration
value. Select a larger parameter for the Span Gain (F2). SEE APPENDIX C FOR
MORE INFORMATION.
