GAS CHROMATOGRAPH, MAINTENANCE MODE SETTING METHOD, AND MAINTENANCE MODE SETTING PROGRAM

摘要

This gas chromatograph is provided with: a sample vaporization unit; a separation column for separating a sample into sample components; a carrier gas supply part for supplying a carrier gas to the sample vaporization unit; a column oven having a first heater for heating the separation column; a detector for detecting the sample components separated in the separation column; an auxiliary gas supply part for supplying an auxiliary gas to the separation column; and a control part for increasing the supply pressure of the auxiliary gas by the auxiliary gas supply part to a pressure higher than the pressure thereof during sample analysis, reducing the supply pressure of the carrier gas by the carrier gas supply part to a pressure lower than the pressure thereof during sample analysis, performing control so that the supply pressure of the auxiliary gas is higher than the supply pressure of the carrier gas, maintaining the detector in a state in which detection processing is possible, and setting a maintenance mode for the sample vaporization unit in a state in which heating of the separation column by the first heater is continued.