wtw inoLab 740, Руководство по эксплуатации

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Dissolved oxygen (D. O.)
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8.3 Measuring the D. O. content
You can display the following measured parameters:
l D. O. concentration
l
Oxygen saturation
l Oxygen partial pressure
Preparatory
activities
Preparatory activities before the measurement:
Note
An incorrect calibration of the measuring system with D. O.
probes will cause incorrect measured values. Calibrate at
regular intervals.
Temperature probe The D. O. probe has an integrated temperature probe that
always measures the current temperature of the test
sample.
Probe with stirrer The StirrOx G D. O. probe has a temperature probe and
stirrer integrated in it. Using the key on the probe, switch the
stirrer on and off. When the stirrer is switched on,
3
appears on the display.
Salinity correction When measuring the concentration in test samples with a
salt content of more than 1 g/l, a salinity correction is
required.
Displaying the D. O.
content
1 Connect the D. O. probe to the measuring module.
The measuring system identifies the probe and
displays a measured value for oxygen. If the oxygen
probe is already plugged in, press
m
several times
until a measured value for oxygen appears on the
display.
2 Calibrate or check the measuring system with the
probe (see section 8.2).
1 Perform the preparatory activities according to
section 8.3.