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氧化锆传感器是测定有氧体系中CO含量的一种有效方法。本文着重研究了采用氧化锆传感器测定CO含量过程中温度和被测气样流速对测量的影响,并对比分析了ZrO_2传感器和奥氏气体分析仪测定2%～19%一氧化碳浓度系列的数据。结果表明:被测气样体系流速越小,测定的CO值更准确;不同的气样体系存在不同的响应电动势—温度曲线,对氧含量低的有氧体系,气体响应温度更高,即应选择更高的工作温度;ZrO_2传感器和奥氏气体分析仪测定结果十分相近,相对偏差小于3%,表明ZrO_2传感器可以快速准确地测量有氧体系中CO和O_2的含量,特别适用于高温在线分析CO的含量。
Zirconia sensors are an effective method to determine CO content in aerobic systems. This paper focuses on the influence of the temperature and the flow rate of the sample gas measured by the zirconia sensor on the measurement, and compares the data of the series of 2% -19% carbon monoxide measured by the ZrO_2 sensor and the austenitic gas analyzer. The results show that the lower the flow rate of the gas sample, the more accurate the CO value. The different gas sample systems have different response EMF-temperature curves. For the aerobic system with low oxygen content, the gas response temperature is higher, that is, Choose higher working temperature; the results of ZrO_2 sensor and Oe gas analyzer are very similar, the relative deviation is less than 3%, indicating that ZrO_2 sensor can measure CO and O_2 content in aerobic system quickly and accurately, especially suitable for high temperature on-line analysis CO content.