Patent ID: 8776576

Claim:
A gas chromatography device, comprising: a column oven, comprising a housing, a column disposed in the housing, and a heater heating air in the housing; a sample vaporization chamber supplying a sample to an inlet end of the column; a carrier gas supply section supplying a carrier gas to the sample vaporization chamber; a detector connected to an outlet end of the column; a controller controlling the heater and the carrier gas supply section; and a hydrogen gas detecting sensor detecting hydrogen gas, wherein the carrier gas is the hydrogen gas, wherein a through hole is formed in the housing, a material is disposed in the through hole, and the material is an insulating material that allows hydrogen to pass through, and wherein the hydrogen gas detecting sensor is disposed above the through hole outside the housing with a gap between the hydrogen gas detecting sensor and the housing, wherein the gap allows gas to be exhausted from the hydrogen gas detecting sensor.