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Design of an oxygen sensor with automatic self-testing and calibration capability (1986)

Kutschker, Alfred ; Taylor, Robert M. ; Cusick, Robert J.

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Publication Date: 2019-06-28

Description: Future long duration manned space missions require a reliable sensor to monitor cabin oxygen (O2) pressure. This paper presents a concept for a solid zirconia O2 sensor capable of automatic self-test and calibration without the need for consumable materials. The operation and the techniques used to verify proper performance and to calibrate the sensor are described. Coulometric measurements are used to calculate the cabin O2 pressure without comparison to any reference state; potentiometric measurements are simple and reliable. The use of independent measurements permits the verification of results obtained with either technique. The design includes fault diagnostics which takes corrective action if a fault occurs.

Keywords: INSTRUMENTATION AND PHOTOGRAPHY

Type: SAE PAPER 860919

Format: text

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