Hanna Instruments HI 4211 - Manual (Page 38)

3 8
Isopotential Point
This option allows the user to edit the isopotential point of the electrode used for ion measurements. The ion
selective electrodes have different isopotential points. If temperature compensation is desired for the ion
measurements, the isopotential point value is absolutely necessary.
The isopotential point is always edited in ppm (mg/L) units.
To set the Isopotential Point:
• Press
while in ISE Measure mode.
• Press .
• Use or to select the Isopotential Point option.
• Press and use or to increase / decrease
the isopotential point value.
• Press key to save the modified value.
• Press to return to the Ion Setup options. If the Saving
Confirmation is enabled, press to accept the modified option,
to escape without saving or to return to the editing
mode. Otherwise, the modified option is saved automatically.
Note: If an ISE calibration was performed and the Isopotential Point option is changed, a warning message
appears on the LCD informing the user to perform a new calibration or to set the previous option in order
to perform accurate measurements.
ISE Significant Digits
Accessing this option, the number of ISE significant digits can be set, with one (x), two (xx) or three (xxx)
significant digits.
To set the ISE Significant Digits:
• Press
while in ISE Measure mode.
• Press .
• Use or to select the ISE Significant Digits
option.
• Press and use or to highlight the
desired option.
• Press to confirm your selection or press to
cancel operation.