Hanna Instruments HI 4421 User Manual
Page 17
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Meter Information
This option provides general information about the instrument serial number (each instrument has an unique identification
serial number), the software version and the factory calibration date and time (for DO, pressure and temperature).
Note: All the instruments are factory calibrated for DO, pressure and temperature. After one year from last factory
calibration, the warning will appear at meter startup to inform the user that a new factory calibration is
required.
To view the meter information:
• Use
or
to select the
Meter Information
option.
• Press
to confirm and to view the meter information or
press
to return to the
System Setup
menu.
Restore Factory Settings
This option allows the user to reset the instrument to the default factory settings.
To restore the factory settings:
• Use
or
to select the
Restore Factory Settings
option.
• Press
to confirm your selection. A pop-up box will be
displayed, asking for confirmation.
• Press
to confirm and return to the
System Setup
or press
to return without restoring defaults.