APPARATUS FOR PROVIDING THE SAMPLE GAS AND METHOD THEREOF

摘要

Provided are an apparatus and a method for supplying a sample gas. The apparatus for supplying a sample gas includes: a gas introduction unit; a first pressure gauge for measuring the pressure of the sample gas introduced through the gas introduction unit; a plurality of flow lines located between the gas introduction unit and a gas analysis unit to be opened and closed according to the pressure measured by the first pressure gauge; a plurality of control valves formed in the plurality of flow lines, respectively, to control opening/closing of the flow lines; a bypass line formed in at least one of the flow lines to discharge some of the sample gas flowing along the flow line; and a control unit for controlling the control value formed in the selected flow line by selecting one of the flow lines according to the pressure measured by the first pressure gauge.