Hanna Instruments HI 96750 - Manual (Page 20)

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It is possible to delete the calibration and
restore factory calibration.
• Press RANGE/GLP/
to enter GLP
mode .
To display the calibration date:
• Press RANGE/GLP/
to enter GLP
mode . The calibration month and day
will appear on the main display and the
year on the secondary display.
In the GLP mode, the last user calibration date can be consulted and the factory calibration can
be restored.
LAST CALIBRATION DATE
• If no calibration was performed, the
factory calibration message, “F.CAL” will
appear on the main display and the
instrument returns to
measurement mode
after three seconds.
FACTORY CALIBRATION RESTORE
G L P
• The instrument will return automatically
to measurement mode by displaying
dashes on the LCD.