ALKALI METAL VAPOR CONCENTRATION MEASURING UNIT

摘要

PURPOSE:To simplify the operation and determine the concentration by on-line system by connecting the container provided with a heater means or beta-alumina. alkali metal vapor concentration sensor to the vapor trap through the gas flow passage. CONSTITUTION:In determination, the valves 4, 13 are opened, and the determined gas containing the gas of sodium and the like is guided to the container 7 through the gas guide pipe 3 and the valve 4. The container 7 is maintained in a constant temperature therein by the heater 5 and sodium contained as mist is converted entrirely into vapor and determined as a sodium vapor mount. The sodium is determined by the sensor in the container 7, thereafter passes through the piping 8 to the vapor trap 9, and sodium vapor in the gas is condensed and removed. The gas discharged from the vapor trap 9 passes through the gas exhaust pipe 12 and the valve 13 and is exhausted to the piping 2 outside the determination unit.