16
6. Funcionamiento
6.5. Redox calibration (only with sensor 5048)
Important note: before turning on the instrument, check that the electrode is
connected.
Redox electrodes do not have a significant drift of the potential, which is why
they are not typically not calibrated. However, some deviations of potential
may occur after continued use of the electrode as a result of changes to the
metal surface or contamination of the reference electrode.
6.5.1. Preparation
1. Fill the tube with the 200 mV standard solution (note the fill level).
2. Unscrew the protector containing the electrolyte and rinse the electrode
with deionized water.
3. Screw the electrode on to the tube containing the standard.
6.5.2. Calibration
Stir gently holding the sensor by the handle. Do not hold it by the tube
to avoid heating of the standard solution.
Follow the diagram.
Note: if the measuring instrument is not used for 5 minutes, it shuts off
automatically.
If errors occur during calibration, an error message will appear on
screen (see pg. 23).
2 3
Screw the
electrode to
the standard
tube.
1
sensION+ MM150 HACH 0710.indd ANG:16sensION+ MM150 HACH 0710.indd ANG:16 7/9/10 13:03:017/9/10 13:03:01
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