| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas analyzer capable of shortening an arithmetic processing time and lightening an arithmetic processing load while keeping a precision of gas concentration output externally. Ž<P>SOLUTION: A laser beam is emitted toward a gas concentration measurement region such as a flue 6 of an incinerator, from a state of the absorbed laser light received after passing through the gas concentration measurement region, so that the gas concentration and the laser light received amount are detected to receive the detected gas concentration and received light amount through a network 13, and to store the gas concentration. Only when the laser light amount received in detecting gas concentration is less than the proper range, the mean value of the gas concentration is made to calculate. Thereby, the precision of the concentration of the gas can be secured when the light receiving amount of the laser light is less than the proper range, and the arithmetic processing time is shortened and the arithmetic processing load is lightened when the light receiving amount of the laser light is present in the proper range. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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