INDUSTRIAL GAS CHROMATOGRAPH Russian patent published in 2012 - IPC G01N30/60 

FIELD: machine building.

SUBSTANCE: industrial gas chromatograph includes cylindrical metal housing made in the form of a shell with a flange on its edge and closed with the base connected to the housing flange, electronic control unit and shapers of carrier gas and analysed gas flows, which are fixed on the base inside the housing. Also, chromatograph includes analytical unit heat-insulated from the housing and electronic unit with flow shapers, which includes temperature-controlled twisted metal chromatographic column, detector and dosing valve with dosing loop. At that, the output of chromatographic column is connected to detector and its input is connected to the dosing valve connected by its ends to outputs of shapers of carrier gas and analysed gas flows. At that, analytical unit is equipped with two coaxially located thin-wall cylindrical shells in the housing, in annular space between which a twisted chromatographic column is located. In cavity of inner shell there coaxially arranged is temperature-controlled detector and dosing valve which are heat insulated from it. At that, outer surface of each shell is enveloped with circular heater connected to the electronic control unit.

EFFECT: higher accuracy, lower consumed power, reduced time for the mode start.

3 cl, 1 dwg