GAS CHROMATOGRAPH, TEMPERATURE CONTROLLER FOR SAME, AND GAS CHROMATOGRAPH TEMPERATURE CONTROL METHOD

摘要

[Problem] To provide an inexpensive gas chromatograph capable of suppressing overshoot while causing a separation column temperature to quickly stabilize at a column temperature at which a sample is separated. [Solution] A setting temperature request unit 38a requests a separation column 15 setting temperature. A control thermistor 33 that serves as a temperature measurement unit measures the temperature of a separation column 15. A temperature control unit 37 controls the power output from an external power supply 100 to a column heater 20 according to the temperature difference between the setting temperature requested by the setting temperature request unit 38a and the temperature measured by the control thermistor 33 and controls the separation column 15 temperature such that the same becomes the setting temperature. During a setting temperature variation period until a column temperature is reached, the setting temperature request unit 38a changes the setting temperature such that the same gradually approaches the column temperature over time.