Hanna Instruments HI 96706C - Manual (Page 20)

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In the GLP mode, the last user calibration date can be verified and the factory calibration can be
restored.
To display the calibration date:
• Press GLP/ to enter
GLP mode . The
calibration month and day will appear on
the main display and the year on the
secondary display.
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
It is possible to delete the calibration and
restore factory calibration.
• Press GLP/ to enter GLP mode .
G L P
• The instrument will return automatically
to the measurement mode by displaying
dashes on the LCD.