horiba DS-71, Instruction Manual, Page: 50 / 78

Chapter 3 Basic Operation
3.3 Calibration
40 HORIBA
6.
Check the stable indication value, and press the
CAL key.
The HOLD indicator blinks until the reading
stabilizes. When the reading stabilizes, the HOLD
indicator lights up and the reading is held.
7.
After the calibration is completed, press the MEAS
key to return to the measurement screen.
3.3.2 Salinity Calibration
You can perform 1 point calibration using a salinity stan-
dard solution.
1.
Prepare the electrode.
Wash the electrode with pure water (deionized), and
wipe it off by filter paper or tissue paper.
2.
Immerse the electrode in the desired standard
solution used for calibration.
3.
Press the MODE key on the measurement screen
to enter the salt measurement screen.
4.
Press the CAL key to enter the salinity calibration
screen.
5.
Press the
▲ ▼
or key to select digit and press the
▲
or
▼
key to change value, to set the value of the
desired standard solution.