Hanna Instruments HI 84442 - Manual (Page 24)

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The instrument displays the date and time of the last electrode calibration, and the date and
time of the last pump calibration, or calibration expired messages.
• Press Pump.
The next screen will be displayed.
• Press Start.
• After the pump calibration is started, on the upper right side of the display two animations
will be shown in order to indicate that the pump and the stirrer are working. On the lower
right side of the display is shown the amount of time that has passed since beginning of the
calibration.
• After the pump calibration is complete a confirmation message is displayed for a few seconds,
then the instrument will return to the titrator calibration menu and will display the new time
and date for the last pump calibration.
Notes:• If an erroneous situation is encountered during the calibration, an error message is
displayed and the calibration can be restarted by pressing Restart.