Hanna Instruments HI 221 - Manual (Page 23)

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Press the ARROWkeys to change the instrument ID value.
Press the CFM key to save the modified instrument ID value or press the CAL
key to cancel without saving the instrument ID.
Note: The instrument ID is downloaded to a PC as part of a logged data set
to identify it’s origin.
CURRENT TIME SET
Press the CAL key when the current time is displayed. The hour will begin
blinking.
Press the ARROWkeys to change the hour.
Press the RANGE key. The minutes will begin blinking.
Press the ARROW keys to change the displayed value.
Press the CFM key to save the modified value or press the CAL key
to cancel without saving the time.
CURRENT DATE SET
Press the CAL key when the current date is displayed. The month will begin
blinking.
Press the ARROWkeys to change the month.
Press the RANGE key. The day will begin blinking.
Press the ARROW keys to change the displayed value.
Press the CFM key to save the modified value or press the CAL key to cancel
without saving the date.