REMOVING METHOD FOR MOISTURE IN ANALYZING SAMPLING GAS

摘要

PURPOSE:To remove moisture out of gas, by drawing a duct introducing the gas to be measured to the vicinity of the upper liquid face of sulfuric acid of >=8N concentration and <=35 deg.C temperature and taking out said gas from the duct. CONSTITUTION:A duct 4 is connected to a gas passage 7 to be measured and a tip end 5 of the duct 4 is positioned just above a liquid face 6 of a sulfuric acid 3. Moreover, another duct 7 is attached to a sulfuric acid vessel 2 and is connected to a measuring instrument 9 through an electronic cooler and dehumidifier 8. Hereby, analyzing sampling gas entered from the passage 1 to the duct 4 is introduced into the vessel 2 and is brought into contact with the sulfuric acid 3 and then the containing moisture is abosrbed into the sulfuric acid 3. For this reason, the moisture is not contained nearly in the analyzing sampling gas reached from the duct 7 to the instrument 9 through the dehumidifier 8 and the lowering of a measuring component is not brought about.