Hanna Instruments HI 3220 - Manual (Page 42)

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If Standard was pressed.
Use ARROW keys to focus on the desired electrode.
Press Accept to confirm setting or ESC to exit.
Press View to see probe parameters.
ISE unit
Focus on the
ISE unit item.
Press Modify.
Use ARROW key to select unit.
Press Accept to confirm selection or ESC to exit.
Note:• If the unit is changed or “User” is selected a warning message will
be displayed to alert that the ISE range must be calibrated.
• If a new probe was selected or custom probe parameter are changed,
the ISE range must be calibrated.