Resetting User Calibrated Values; Ion Calibration (Ion 6+) - Oakton pH 5 Instruction Manual

Instruction Manual
Press ENTER key to confirm your selection. The meter will automatically revert to pH
measurement mode. The meter will save the selected group indefinitely until changed.
3.1.3

Resetting User Calibrated Values

The calibrated pH/mV/Ion values can be reset to factory default using the procedure
below. Temperature offset will not be reset using this procedure. To abort press CAL to
revert to measurement mode.
1. Press and hold CAL while switching the meter on using the ON/OFF key. The LCD
shows "rSt" blinking.
2. Press ENTER key to confirm. The meter automatically clears all stored pH/Ion
calibration or mV offset values and reverts to measurement mode.

3.2 Ion Calibration (Ion 6+)

The Ion 6+ meter is capable of 2 or 3 point ion calibration with standard solutions. The
Ion 6+ will display "- - -" if the meter has not been calibrated or if the meter has been
reset.
To abort ion calibration press CAL to revert to measurement mode.
Ion calibration values are not stored into the meter's non-volatile memory. Ion calibration
data is lost once the meter is reset and when the batteries are being removed and
replaced.
Error message "Er2" is displayed after a single point calibration is completed.
Recalibrate using minimum of 2 points.
Calibration values are successfully stored if the ISE (Ion Selective Electrode) slope is
within the specified tolerance of 15-90mV/decade, otherwise an error message "Er3" is
displayed.
If any of calibration points are not within 1 decade of each other, an error message "Er4"
will be shown at the end of calibration process. The ion calibration options
-9-
pH 5+, pH 6+, Ion 6+