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Model TS420
3
2.0 Detector Assembly
2.1 Sensor Assembly
General Monitors uses a two-electrode electrochemical cell (Figure 2) to provide a stable and
accurate gas detector.
Figure 2 Oxygen Deficiency Sensor Assembly
The oxygen sensor is of the self-powered, diffusion limited, metal air battery type. It contains an
anode, electrolyte and an air cathode to which the diffusion of oxygen is severely restricted by a
diffusion barrier. At the air cathode, oxygen is reduced to hydroxyl ions, which in turn oxidize
the metal anode. This action produces a current that is proportional to the rate of consumption
of oxygen.
Remove paper liner from gasket, if present.