Ohaus NBF1A2 Navigator Balances - Manual (Page 17)

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3.3.4 Span Calibration
Span calibration utilizes two calibration points, one at zero and a choice of either half capacity or full capacity. All
balances will prompt for a particular weight which is shown in the table. If the prompt calls for a half capacity mass,
you can use a full capacity mass, the balance will accept it. If the prompt calls for a full capacity mass, you can use
a half capacity mass. This versatility allows calibration at other than full capacity. Sample display below illustrates a
210g balance.
Procedure
• Clear the pan.
• Press the Setup button, CAL is displayed.
• Press Enter button, CAL TYP is displayed.
• Press Enter button to select SPAN calibration, CAL
TYP SPAN is displayed.
• Press Enter button, BUSY is displayed.
NOTE: If a weight is left on the pan, the balance will
display CLR PAN (remove the weight from the pan).
The balance automatically resumes calibration.
• Place the calibration mass on pan.
NOTE: The PUT WEIGHT message indicates the
calibration mass that is on the pan.
• Press Enter button, BUSY is displayed. After a
few seconds CAL SET is displayed, the display then
returns to WEIGH mode.
• Span calibration is completed.
• Remove calibration mass from the pan.
SPAN CALIBRATION MASSES
MODEL 32g 210g 410g
MASS 30g 100g, 200g 200g, 400g
MODEL 810g 2100g 4100g 8100g
MASS 400g, 800g 1kg, 2kg 2kg, 4kg 4kg, 8kg
• Display changes to PUT WT 200g. The displayed
weight is the value of the mass to be used. See the
following table for masses that may be used with the
different model balances. Values shown in bold are
displayed.