The natural gas analyzer can comprehensively analyze key parameters such as the composition and calorific value of natural gas. It integrates multiple technologies such as chromatography analysis and calorific value calculation to accurately separate and quantitatively analyze hydrocarbon gases such as methane, ethane, and propane as well as non - hydrocarbon gases such as carbon dioxide and nitrogen in natural gas. The outer shell is made of high - strength, corrosion - resistant materials to adapt to the natural gas transportation and storage environment. The internal system is complex, including modules such as sampling pretreatment, analysis detection, and data processing. Its advantage lies in its comprehensive and accurate analysis, capable of providing detailed information on the composition and calorific value of natural gas; high degree of automation, reducing manual operation errors; and fast detection speed, improving work efficiency. It is widely used in the links of natural gas exploration, transportation, processing, and utilization to provide a basis for the quality control and rational utilization of natural gas.