OHAUS Valor 3000 - Span Calibration

APPENDIX B THE SERVICE MENU
B.4 Span Calibration
Span calibration from the service menu allows you to set a new zero and maximum setting.
This is distinct from user level span calibration, which allows a user to adjust the zero and
maximum setting within the range established by the service menu span setting.
Span calibration automatically follows Linear calibration. To start from the Service Menu, press
and hold O/T/On/Off and MODE/UNIT/Menu together. As the scale powers up, RAMP
appears. Press No to bypass Ramp. Lin appears. Press No.
SPAN appears. Press Yes.
SPAn
The display shows
-C- while the scale acquires the
zero value.
-C-
The specified maximum mass weight flashes.
Place the indicated weight in the center of the Pan.
200
If the target weight is not placed on the pan within 10
seconds, error CAL E appears for 3 seconds and the
menu returns to SPAN. Start again.
Cal e
Pressing Yes after placing the prompted weight accepts
the span weight shown on the display. The display then
shows -C- while the scale acquires the span value.
-C-
After the span value is acquired, the display shows done
for 2 seconds and returns to SPAN. Press No to
advance to the next option (Geo). (To exit the Service
Menu, press No until End appears. Then press Yes.)
done
NOTE: If calibration fails, ensure that the test area is free from drafts and the surface the scale
rests on is level and free of vibrations. Then try to calibrate again. If it continues to fail, there
may be an internal problem. To resolve internal problems, follow procedures in Chapter 3.
Valor™ 3000 Series Service Manual B-3 Ohaus Corporation www.ohaus.com