Filter
Top Products
PROBE POLARIZATION:
• A dissolved oxygen probe must be polarized to function
properly.
• To polarize the probe, the fully assambled probe must be
connected to the meter and the meter must be on.
• During polarization (and during measurement), approximately
800 mV is applied to the cathode and anode inside the
membrane and a chemical reaction occurs. During the
polarization period excess oxygen in the electrolyte is
consumed. During this phase, probe movement that “moves”
the electrolyte will yield jumpy measurements. When a probe
is totally polarized moving the probe will not effect the
measurement.
• When the meter is turned off, the probe will revert to it’s
prepolarized state. Before using again, the probe will have
to be repolarized.
CALIBRATION PROCEDURE:
The calibration is very simple and fast.
• Make sure the probe is ready for measurements
(see Probe Preparation), i.e. the membrane is
filled with electrolyte and the probe is connected
to the meter.
• Switch the meter on by pressing the ON/OFF
key.
• For an accurate calibration, it is recommended
to wait at least 15 minutes to ensure polarization
of the probe.
• Remove the protective cap from the D.O. probe.
2