Ohaus NBF1A2 Navigator Balances - Manual (Page 14)

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3.3.1 Internal Calibration (InCAL TM )
On Navigator TM balances equipped with the InCal TM feature, calibration can be accomplished using the internal calibra-
tion mass. InCal TM requires use of the AC adapter supplied with the balance. When the balance requires calibration, a
screen prompt of CAL NOW appears. This display can be turned off as described under Calibration Message. Also, a
software feature is incorporated which permits the internal calibration mass to be adjusted by +100 divisions. The
adjust feature is described under Calibration Adjust. Internal calibration can be performed at any time providing the
balance has warmed up to operating temperature.
• Press the Setup button, CAL is displayed.
• Press Enter button, CAL TYP is displayed.
• Press Enter button, CAL TYP InCAL is displayed.
• Press Enter button, INCAL is displayed.
Procedure
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.
The internal mass is positioned several times during
calibration and then removed, then after a few seconds,
CAL SET is displayed indicating a successful calibra-
tion. The display returns to WEIGH mode.
IMPORTANT !
DO NOT DISTURB THE BALANCE DURING
CALIBRATION. IF THE MESSAGE UNSTBL
IS DISPLAYED, THE BALANCE WAS UNABLE
TO ACQUIRE STABLE DATA DURING INTER-
NAL CALIBRATION. THE BALANCE WILL
CONTINUE TO PERFORM INTERNAL CALI-
BRATION UNTIL READINGS STABILIZE. THE
BALANCE WILL THEN COMPLETE THE IN-
TERNAL CALIBRATION FUNCTION.
TO EXIT INTERNAL CALIBRATION MODE
BEFORE COMPLETION, PRESS ENTER OR
SETUP BUTTONS.
STABILITY CAN BE AFFECTED BY TEM-
PERATURE CHANGES, AIR CURRENTS, VI-
BRATION, ETC...