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• Press READ /TIMER to enter in the
factory calibration restore screen. The
instrument asks for confirmation before
deleting the last calibration.
• Press ZERO/CFM to restore the factory
calibration or press GLP/
again to abort
factory calibration restore.
In the GLP mode, the last user calibration date can be consulted 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 RESET
It is possible to restore the factory calibration.
• Press GLP/
to enter GLP mode.
GLP