Gas analysis device, gas analysis method, and program for gas analysis device

A gas analysis method using a gas analysis device, the gas analysis device comprising a sample cell into which sample gas is introduced, a light source that irradiates the sample cell with light, and a photodetector that detects light intensity of light which passes through the sample cell irradiated by the light source, the gas analysis device analyzing a measurement target component contained in the sample gas based on a light intensity signal output from the photodetector, comprising

• outputting, comparably with a reference light intensity set in advance, a light intensity at calibration detected by the photodetector during calibration.

A non-transitory computer readable medium having a program for a gas analysis device stored thereon, the gas analysis device comprising a sample cell into which sample gas is introduced, a light source that irradiates the sample cell with light, and a photodetector that detects light intensity of light which passes through the sample cell irradiated by the light source, the gas analysis device analyzing a measurement target component contained in the sample gas based on a light intensity signal output from the photodetector, the program, when executed by a computer, causing the computer to perform the functions of:

• a concentration calculation unit which calculates a concentration of a measurement target component contained in the sample gas based on light intensity outputted from the photodetector;
• and
• a light intensity output unit which outputs, comparably with a reference light intensity set in advance, a light intensity at calibration detected by the photodetector during calibration.