Measuring and testing – Gas analysis – With compensation detail
Patent
1997-04-30
1998-10-20
Williams, Hezron E.
Measuring and testing
Gas analysis
With compensation detail
422 98, G01N 700, G01N 2700
Patent
active
058230440
ABSTRACT:
A method for determining an amount of a gas of interest contained in a measurement gas includes the steps of periodically modulating a specified flux of a measurement gas at a first predetermined frequency, periodically modulating a specified flux of a specified gas that can react non-linearly with the gas of interest at a second predetermined frequency, adding the modulated flux of the specified gas to the modulated flux of the measurement gas, passing the mixture of the two modulated gas fluxes through a reactor where the gas of interest reacts with the specified gas to produce a third gas, exposing a gas sensor that can respond to the third gas present in the gas mixture after the reactor, measuring the sensor output at zero frequency (DC) and at specified frequencies (AC), and determining the original concentration of the gas of interest in the measurement gas from the measured sensor output at zero frequency and at the specified frequencies.
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Hurley Michael D.
Logothetis Eleftherios M.
Soltis Richard E.
Ford Global Technologies Inc.
May, Esq. Roger L.
Melotik Esq. Lorraine S.
Politzer Jay L.
Williams Hezron E.
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