| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a calibration method of a gas analyzer capable of easily checking the lowering of sensitivity caused by the change of the analyzer with the elapse of time in a line not allowing a span calibration gas to flow, and the gas analyzer. <P>SOLUTION: In the calibration method of the non-dispersion type gas analyzer having a cell 1, a light source 2 for irradiating the inside of the cell 1 with light, a main detector 4 for detecting the transmitted light from the cell 1 to detect the light of an absorbance wavelength region of a component to be measured and a comparison detector 5 for detecting the transmitted light to detect light of a wavelength region reduced in absorption due to a sample gas, an optical filter 10, which is constituted so that the transmissivity of the light in the detection wavelength region of the main detector 4 is different from that of the light in the detection wavelength region of the comparison detector 5 is arranged in the light path from the main detector 4 to the main detector 4 and the comparison detector 5 to perform span calibration without allowing a span calibration gas to flow into the cell 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
