氧化锆作为固态电解质在氧传感器中承担着运送导电离子的作用

工采网 · 发表于 2023-2-10 10:22:44

在众多大中型企业中钢铁冶金、石油化工、火力发电厂等都需要提高燃烧效率、降低能源消耗、降低污染物排放、保护环境等来作为提高产品质量和增强企业竞争能力的重要途径。氧传感器作为工业上提高燃烧效率的利器，其响应时间、测量精度成为关键性能指标。

作为工业测量仪器，安装与维护也成为各大能源消耗企业的关心之处。氧化锆氧传感器由于结构简单、响应时间短、测量范围广（从ppm到百分含量）、使用温度高（600℃-1200℃）、维护量小等有点，故而在冶金、化工、电力、汽车等领域得到广泛应用。下面工采网小编和大家一起看看氧化锆氧传感器的型态详解与结构解析

氧化锆作为固态温电解质，应用于固态氧化物燃料电池。氧化锆测氧原理如图：

在氧化锆电解质（一般为氧化锆管）的两侧面，分别烧结上多孔铂（Pt）电极。在一定温度下，当电解质两侧氧浓度不同时，高浓度侧（空气）的氧分子被吸附在铂电极上，与电子结合形成氧离子，使该电极带正电。之后，氧离子通过电解质中的氧离子空位迁移到低氧浓度侧的Pt电极上放出电子，转化成氧分子，使该电极带负电。两个电极的反应式分别为参比侧：02 +4e→202- 测量侧202- -4e→O2

这样在两个电极间便产生了一定的电动势，氧化锆电解质、铂电极及两侧不同氧浓度的气体组成氧探头即所谓氧化锆浓差电池。之后，通过测得气体温度和输出的电动势，便可通过能斯特方程计算得到氧分压（浓度），这就是氧化锆氧传感器的基本检测原理。

氧气含量调控是监控燃烧条件、提高燃烧效率的有力手段，而其测量的精度、测量的时间都对传感器提出了一定的要求，氧化锆作为固态电解质，在氧传感器中承担着运送导电离子的作用，对于氧化锆传感器的选择工采网推荐英国SST 螺纹式高温氧化锆氧气传感器(O2传感器) - O2S-FR-T2-18C/B/A。螺纹式高温氧化锆氧气传感器(O2传感器) - O2S-FR-T2-18C/B/A敏感元件是氧化锆，采用两个氧化锆盘，在其中间是一个密封空间。其中一个盘起的功能是可逆氧气泵，依次充满样品气和抽空此小空间。另一个盘用于测量氧分压差比率，得到相对应的传感电压。氧化锆盘作为氧气泵运行时，需要的700 °C的温度由加热元件产生(配套的电路板O2I-FLEX-092可以提供加热和线性模拟量输出功能。)。氧气泵使小空间范围内达到额定的小值和大值压力所花的时间和环境中氧分压值具有对应关系。

螺纹式高温氧化锆氧气传感器(O2传感器)O2S-FR-T2-18C/B/A产品参数:

螺纹式高温氧化锆氧气传感器(O2传感器)O2S-FR-T2-18C/B/A特性：

1）氧化范围： 2mbar-3bar

2）氧化锆检测元件

3）非消耗性技术

4）无需温度温度，无需参考气体

5）高精度

6）线性输出信号

7)与外部接口板配合工作

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