Operational Principle of LECO CS230 Carbon Sulfur Analyzer and Tungsten Granule

For the determination of carbon, the main way is to combust carbon which can be converted to carbon monoxide and / or carbon dioxide in oxygen. Using infrared absorption spectroscopy of carbon dioxide and carbon monoxide in oxygen to determine carbon. The determination of sulfur is first to burn sulfur in oxygen which is converted to sulfur dioxide. Then, sulfur is detected infrared absorption spectroscopy of sulfur dioxide. The electronic control part of the carbon sulfur analyzer consists of infrared, air flow control panel, and stimulus airflow control panel, and power control rack, incubator heating control panel, computers and other electronic components.

Path of the carrier gas of the analysis of the gas flow is to let oxygen pass the rare earth oxide copper oxide of inlet to remove the carbon monoxide methane and other impurities of carrier gas. To remove its carbon dioxide and moisture with soda asbestos and magnesium perchlorate. Then, it would pass the oxygen lance and carrier gas inlet into the furnace end. Gas of samples which is generated in combustion tube which is made of fused silica would go with carrier gas after magnesium perchlorate to remove its moisture, and then, entering into detector cell of sulphur. After that, transfer sulfur dioxide into sulfur anhydride and remove it. Detection of carbon dioxide of carrier gas would be in process of high carbon and low carbon at the both ends of gas path of the instrument.

When LECO CS230 carbon sulfur analyzer works with tungsten particles, its operational principle is first to put a certain quality of sample into a high-frequency magnetic field which has been passed through an oxygen stream. The sample and flux would be induced and heating, combusting in oxygen, carbon and sulfur of sample reacts with oxygen to produce carbon dioxide and sulfur dioxide which will accompany with the carrier gas into the gas system. They will first to reach the sulfur dioxide detector testing pool to determine sulfur, and then using thermal oxidation of copper to convert carbon monoxide into carbon dioxide. Next, sulfur dioxide will be converted into sulfur trioxide, and then it would be absorbed by the plastic which has a strong adsorbability. Then, the sample gas would go through the high and low content of carbon dioxide of the infrared detector cell to detect carbon.

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