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A robust oxygen detector capable of giving direct readings on a meter or recorder has many applications in physiology or in the control of chemical processes. Physical methods at present available commercially have characteristics which often make them unsuitable for particular applications. This paper describes two separate but parallel investigations of the design of an oxygen meter depending on the paramagnetism of oxygen and the change of its susceptibility with temperature. One instrument covers 0-100% oxygen concentrations at or near atmospheric pressure, the other 90-170 mm of mercury partial pressure of oxygen in total ambient pressures of about 600-900 mm of mercury.
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Hobson et al. (1956) studied this question.
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