Patent ID: 6153072
Filing Date: 2000-11-28
Classification: G01N

Abstract:
A gas sensor comprising:a first processing space and a first gas passage for introducing a measurement gas containing oxygen, water vapor and a combustible gas component into said first processing space;a second processing space and a second gas passage for introducing a gas contained in said first processing space into said second processing space;an oxygen concentration detection element for measuring the oxygen concentration of gas contained in said first processing space;a first oxygen pumping means for adjusting the oxygen concentration of the measurement gas introduced into said first processing space and measured by said oxygen concentration detection element within a range such that water vapor contained in the measurement gas is not substantially decomposed;an oxidation catalyst for accelerating combustion of a combustible gas component contained in the gas which has been introduced into said second processing space from said first processing space via the second gas passage; anda combustible gas component concentration information generation/output section for providing information regarding the concentration of the combustible gas component of the measurement gas, having an output which varies according to the amount of oxygen consumed by combustion of the combustible gas component contained in the gas introduced into said second processing space.