Reliable, Maintenance-Free Oxygen Sensor for Aircraft Using an Oxygen-SensitiveCoating on Potentiometric Electrodes

摘要

This report is on the preliminary development of a new kind of oxygen sensor.Based on sensing a potentiometric signal from oxygen-specific compounds, this approach offers a potentially stable, reliable, and vastly simplified sensor. The report represents two configurations for the oxygen-specific compound (oxygen reagent). One makes use of the reagent in a thin solution film confined by a membrane. The other uses the reagent immobilized in a polymer film, without any additional solvents. This last embodiment is essentially a solid-state probe of oxygen. This report demonstrates the feasibility of such an approach by reviewing relevant work dealing with (1) proof of principle, (2) calibration curves over a range of oxygen pressure, (3) temperature effects, and (4) pressure effects. Keywords: Oxygen sensor, Solid-state. (jes)