Apparatus for oxygen partial pressure measurement

Details Apparatus for oxygen partial pressure measurement Apparatus for oxygen partial pressure measurement

1979-10-01

1981-05-26

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

73 1G, 128635, 204195P, G01N 2746

Patent

active

042696844

ABSTRACT:
Disclosed is apparatus and method for continuously compensating for electrode drift during the measurement of the partial pressure of oxygen by the net charge transport technique. The apparatus derives a correction factor from variations in waveforms representing charge returned from an electrochemical cell after successive interrogating voltage pulses. These wave-forms are independent of oxygen partial pressure but dependent on electrode parameters thereby permitting drift to be monitored and oxygen partial pressure measurements to be corrected.

REFERENCES:
patent: 3678375 (1972-07-01), McFarland
patent: 3794575 (1974-02-01), Niedrach et al.
patent: 4120770 (1978-10-01), Kessler
Gregory L. Zick, IEEE Trans. On Instrumentation & Measurement, vol. 1M-25, No. 3, pp. 250-253, (1976).
Stanley H. Saulson, Instrumentation & Methods, pp. 29-34.
Albert Huch et al., Hospital Practice, p. 43, Jun. 1976.
Patrick Eberhard et al., "Oxygen Transport Problems In Neonatology", pp. 1097-1101, (1973).
Gregory L. Zick, IEEE Trans. On Biomedical Engineering, vol. BME-23, No. 6, pp. 472-478, (1976).

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