Optex SE-pH-D Instruction Manual page 31

After immersing the sensor in the
6
1st calibration solution (standard
solution), select [2-point Calibration]
using
7
Press
When the calibration mode is set to
Auto, calibration starts automatically
when the measurement value is
stabilized.
Clean the electrode surface before immersing in the 2nd
calibration solution (standard solution).
Caution
Otherwise, the 1st and 2nd calibration solutions (standard
solutions) will be mixed and calibration will not be performed
correctly.
After immersing the sensor in the
8
2nd calibration solution (standard
solution), press
2nd calibration.
When the calibration mode is set to
Auto, calibration starts automatically
when the measurement value is
stabilized.
, and press
.
to start the
.
31