6141.22X Incubator 8000 IC/SC/NC
Function Description
09.99 Page 48 of 49
24 5224.7
25 5000.0
26 4786.1
27 4582.5
28 4388.8
29 4204.4
30 4028.7
31 3861.2
32 3701.6
33 3549.6
34 3404.6
35 3266.3
36 3134.4
37 3008.6
38 2888.5
39 2773.9
3.4.3.2 O2 sensors
There are two independent 02-cells in the climate housing one half of which is evaluated.
The sensor is designed according to the fuel cell principle as double cell, i.e. it is an
electrochemical cell which builds up a voltage due to an ionic current. The cell comprises the
capsule with the electrolytes, the lead anode and the gold cathode with teflon foil.
The oxygen to be measured diffuses through the teflon diaphragm, reacts at the gold cathodes
and produces lead oxide and H20 at the lead anode. During this chemical process an electric
voltage is produced which is proportional to the oxygen partial pressure. The gold cathode is
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