NAVI D-25 Instruction Manual page 63

2 Taking Measurements
2.8 Conductivity measurement (D-54)
● Calibrating the cell constant
52
The cell constant of the electrode changes as the elec-
trode is used. Calibrate the cell constant once a year or
so.
Calibrating the cell constant will update it to match the
condition of the current electrode.
The cell constant is calibrated with a standard solution of
potassium chloride.
To prepare a standard solution of potassium chloride,
refer to " ● Preparing potassium chloride standard
solution" page 190.
1.
Immerse the electrode in the standard solution
of potassium chloride.
2.
Enter the Calibration mode by pressing the
MODE key in the CELL SET mode.
3.
Enter the value of the standard solution used for
calibration in the Calibration mode using the ▲
and ▼ keys.
" ● Conductivity and temperature coefficients for various
solutions" page 195
When the temperature conversion has been set to ON
when setting the temperature coefficient, calibration is
performed with the converted temperature.
HORIBA