Gas analysis apparatus

Details Gas analysis apparatus Gas analysis apparatus

1984-12-05

1985-10-08

Metz, Andrew H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204425, 204426, G01N 2758

Patent

active

045458898

ABSTRACT:
A gas analysis apparatus for measuring the concentration of a gas component in a first space. The apparatus comprises a sealed measurement space, of which at least one wall portion consists of a separation wall which exhibits ionic conduction. The concentration of the gas component in the measurement space is changed periodically between two values by filling and pumping currents at the separation wall. The time intervals are measured and are a measure of the concentration. However, these time intervals comprise a "dead time" caused by switch-on and switch-off (both electrical and physical) transients. When given time intervals are combined by addition and subtraction, the influence of dead times can be considerably reduced.

REFERENCES:
patent: 3514377 (1970-05-01), Spacil et al.
patent: 3691023 (1972-09-01), Ruka et al.
patent: 3907657 (1975-09-01), Heijne et al.
patent: 4272329 (1981-06-01), Hetrick et al.
patent: 4272330 (1981-06-01), Hetrick
patent: 4272331 (1981-06-01), Hetrick
patent: 4384935 (1983-05-01), De Jong

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