B.4 Span Calibration - OHAUS NV212 Service Manual

The display shows --C-- while the scale acquires the
zero point weight data.
The display then shows the first calibration point value.
Place the indicated weight on the Pan, and press Yes.
The display shows --C-- while the scale acquires the
weight data.
After the first calibration point value is acquired, the
display shows the second calibration point value.
Pressing Yes after placing the prompted weight accepts
the second linearity calibration point weight. The display
--C--
shows while the scale acquires the weight data.
After the second linearity calibration point weight value
is acquired, the display shows done for 2 seconds and
advances to SPAN.
Press Yes to confirm a span calibration.

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 Zero/On and Tare together. As the scale powers up, rAmMP appears. Press No to bypass
Ramp, when Lin appears press No.
SPAN appears. Press Yes.
The display shows --C-- while the scale acquires the
zero point weight value.
The specified span weight flashes.
Place the indicated weight in the center of the Pan.
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 point
Navigator Series Service Manual 39 Ohaus Corporation www.ohaus.com
APPENDIX B THE SERVICE MENU
--C--
3000
--C--
5000
--C--
Done
SpaN
SPAN
--C--
3000
--C--