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烟道气监测器是用来测定烟囱管道中气体组份的仪表,通常用以定量分析已知组份的浓度。它的传感器或取样装置安装在烟道中,分析器安装在其附近,指示仪表、调节器或记录仪则可装在中央控制室。烟道中的温度一般为200～900°F,在某些情况下可达1500°F。在测量过程中,微粒子可能聚集在探头或检测器表面,而酸雾和水汽会引起腐蚀,所以探头必须坚固,并且相对地不敏感于周围条件。
Flue gas monitors are instruments used to determine the gas composition of a stack pipe and are often used to quantitatively analyze the concentrations of known components. Its sensors or sampling devices are installed in the flue and the analyzer is installed in the vicinity of it. Indicators, regulators or recorders can be installed in the central control room. The temperature in the stack is typically 200-900 ° F and in some cases up to 1500 ° F. During the measurement, particles may collect on the probe or detector surface, while acid mist and moisture may cause corrosion, so the probe must be robust and relatively insensitive to ambient conditions.