Flue gas analyzers are key in industry for detecting flue gas elements. With high - precision sensors and smart algorithms, they swiftly and accurately measure oxygen, carbon monoxide, nitrogen oxides, and sulfur dioxide levels. Their compact, tough outer shells (engineering plastics or metals) resist harsh industrial conditions like high temperature, dust, and humidity. Portable models have handles. Internally, they have sampling, pretreatment, analysis, and display units for taking, filtering/cooling/drying, analyzing samples, and showing results. These analyzers offer high accuracy, optimizing combustion and cutting energy use. They monitor emissions in real - time for timely adjustments to avoid penalties. With user - friendly features like auto - calibration, they reduce errors. Widely used in power, chemical, steel, and building materials industries, they enhance power generation, ensure safety, and promote green production.