Measuring The Ph Value - wtw inoLab Level 3 Operating Manual

Preparatory
activities
Temperature probe
6.3

Measuring the pH value

Perform the following preparatory activities when you want
to measure:
1 Connect the electrode to the measuring module.
2 Call up the Display mode with
3 Call up the pH measured value display with
4 Adjust the temperature of the solutions and measure
the current temperature if the measurement is made
without a temperature probe.
5 With manual temperature input:
82
Use to call up the temperature input field and
adjust the temperature.
Use [ESC] to terminate the temperature input.
6 Calibrate or check the measuring system with the
electrode.
7 Switch to the measuring mode with
Note
Incorrect calibration of pH electrodes leads to incorrect
measured values. Calibrate regularly. The measuring
system has to be calibrated before measuring.
You can measure with or without a temperature probe. If a
temperature probe is connected, it is indicated on the
v
display by .
Note
If you use a pH electrode without temperature probe, you
can also use the temperature probe of a D. O. probe or a
conductivity measuring cell (see section 5.5.2 M
THE TEMPERATURE
O. probe or a conductivity measuring cell,
on the display.
1 Perform the preparatory activities.
). If you use the temperature probe of a D.
m
.
46
m
.
EASURING
y z
or appears
pH
.
89