Non-obvious Problems in Clark Electrode Application at Elevated Temperature and Ways of Their Elimination
Figure 2
Closed oxygen sensor: (1) is cathode (Ag; 5 mm2), (2) is the body-anode (Zn; 300 mm2), (3) is electrolyte (KCl; 60 g/L, 400 μL), (4) is membrane (PE; 50 μm, 100 mm2), (5) is the body of the cathode (polymethyl methacrylate, PMMA), (6) is nut, and (7) is output to oximeter. The main feature of this oxygen sensor is accelerated gas exchange between the test liquid and electrolyte (3) through a polyethylene membrane (4). A small amount of electrolyte, the location of the total volume as close as possible to the membrane, and a large area of the membrane contribute the acceleration.
