| 摘要 |
PROBLEM TO BE SOLVED: To measure CO in an exhaust gas from a boiler, using a catalytic combustion type CO sensor, even under an absence of oxygen, while using the catalytic combustion type CO sensor requiring oxygen. SOLUTION: A stack 10 of the boiler 1 is connected to a fan 11 by an exhaust gas introduction passage 19, in this structure of the present invention for measure CO in the exhaust gas from the boiler. The exhaust gas is introduced from the stack 10 into the exhaust gas introduction passage 19, with suction by the fan 11, and outside air is introduced thereinto from an air introduction port (suction port) 21 of an ejector 20. The exhaust gas introduction passage 19 is provided with the catalytic combustion type CO sensor 18 in a downstream of the air introduction port 21. The CO in the exhaust gas is measured using the catalytic combustion type CO sensor 18, by supplying the exhaust gas mixed with air in the ejector 20 to the CO sensor 18. COPYRIGHT: (C)2009,JPO&INPIT
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