介绍了单光束红外光二氧化碳分析仪．该分析仪基于朗伯－比尔定律，采用光源稳流、单片机温度补偿及选用高性能红外探测器等技术，能够对二氧化碳气体进行有效准确的测量和分析，且结构简单，体积小，重量轻，功耗低，响应速度快，可靠性高，具有广阔的应用前景 Introduced a single beam infrared carbon dioxide analyzer. Based on Lambert-Beer’s law, the analyzer uses steady-state light source, single-chip temperature compensation, and high-performance infrared detector technology to effectively and accurately measure and analyze carbon dioxide gas. The analyzer is simple in structure, small in size and light in weight, Low power consumption, fast response, high reliability, has a broad application prospects