| 摘要 |
A luminous reaction measuring device (10) wherein a sample gas (NO) and an oxidizing gas (O3) are subjected to chemical reaction within a reaction chamber (2) and the intensity of the chemiluminescence produced during the chemical reaction is detected by a photodetector (32), characterized by comprising an optically transparent window (3) for admitting the light produced by chemiluminescence into the photodetector (32), a sample gas introducing portion (6) for introducing the sample gas into the reaction chamber in a direction perpendicular to the optically transparent window (3), an oxidizing gas introducing portion (8) for introducing the oxidizing gas into the reaction chamber in a direction substantially orthogonal to the direction of introduction of the sample gas so that the oxidizing gas may collide with the sample gas introduced from the sample gas introducing portion (6), and a gas discharging portion (12) for discharging the gas, produced by chemical reaction between the sample gas and the oxidizing gas, out of the reaction chamber into the outside of the system, the sample gas introducing portion (6) being offset from the center (L) of the reaction chamber in a direction away from the installed position of the gas discharge portion (12). |
