OHAUS Explorer Balances, Руководство по обслуживанию

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APPENDIX A - STANDARD CALIBRATION
Explorer
®
Series Service Manual 63 Ohaus Corporation www.ohaus.com
APPENDIX A - USER CALIBRATIONS
A.1 SPAN CALIBRATION
The InCal system in Explorer
®
balances with will perform a good span calibration as long as there is
no damage to the load-cell. Verification with an external weight should be done if there is a question
of the balances accuracy. Often any weight variations are due to the inaccuracy of the external
calibration weight rather than a calibration error with the InCal system.
Touch
Internal Calibration
to initiate a calibration using the internal weight.
If an external calibration is required due to the customer’s audit system follow the procedure in the
Instruction Manual or the copy below. See Section 4.1 for Calibration Masses required for each
model.
Note
: This menu is locked out in Legal for Trade applications. To regain access, see Section 1.7 .
Menu Calibration Span Calibration
With the balance turned ON and no load on the pan, touch
Menu
then
Calibration
and then
Span
Calibration
to initiate the procedure. When complete, the display shows the Span calibration status
and returns to the current application.
Note:
To change the span calibration point, touch the alternate weight shown on the display.
Follow the screen instructions and place the specified calibration weight on the scale when
prompted to do so.
NOTE:
If calibration fails, ensure that the test area is free from drafts and the surface the balance
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 Chapters 2 and 3.
Be careful not to touch the balance or the table while calibration is in progress, as it will
cause the process to fail.