The micro oxygen analyzer is a common analytical instrument. It is one of the most advanced oxygen measurement methods in the world. It is composed of high active oxygen electrode and lead electrode, immersed in KOH solution.

　　微量氧分析仪广泛用于测定上、下塔的氮纯度、精氩塔的微量氧含量等工艺控制参数。同时，还可以对输气管道、液氮、储罐氩中微量氧含量等质量控制参数进行测量。根据仪器的不同测量原理，综合考虑生产控制的质量要求、经济成本、维护工作量和维护成本等因素，选择微氧分析仪。

　　The micro oxygen analyzer is widely used to determine the nitrogen purity of the upper and lower towers, the micro oxygen content of the refined argon tower and other process control parameters. At the same time, it can also measure the quality control parameters such as the content of micro oxygen in gas pipeline, liquid nitrogen and storage tank argon. According to the different measuring principles of the instrument, the micro oxygen analyzer is selected considering the quality requirements, economic cost, maintenance workload and maintenance cost of production control.

　　微量氧分析仪在使用过程中难免会出现各种情况下的故障，下面就来介绍一下:

　　It is inevitable that the micro oxygen analyzer will fail in various situations during use. Here is an introduction:

　　(1)仪器故障表明计量槽温度偏低。检查量筒热电偶的连接，检查多通道转接板的安全，检查线路板的连接。

　　(1) The failure of the instrument indicates that the temperature of the metering tank is low. Check the connection of the measuring cylinder thermocouple, the safety of the multi-channel adapter plate, and the connection of the circuit board.

　　(2)仪器故障表示测量槽的高电位或低电位。检查测量槽的电路连接，检查电路板之间的连接，检查氧化锆传感器。

　　(2) Instrument fault indicates high or low potential of measuring tank. Check the circuit connection of the measuring slot, check the connection between the circuit boards, and check the zirconia sensor.

　　(3)传感器对样品气体含氧量变化响应缓慢，测量值较低。在2005年1月，一个氧化锆微量氧分析仪被发现有一个非常低的测量和缓慢的传感器响应。经过对仪器采样系统的检查、零点范围的校准和传感器的检查，zui最终确认传感器存在故障。更换传感器后，仪器恢复正常测量。

　　(3) The sensor responds slowly to the change of oxygen content of sample gas, and the measured value is low. In January 2005, a zirconia micro oxygen analyzer was found to have a very low measurement and slow sensor response. After the inspection of the instrument sampling system, the calibration of the zero range and the inspection of the sensor, Zui finally confirmed that the sensor was faulty. After replacing the sensor, the instrument returns to normal measurement.

　　(4)仪器工作环境中的氧含量应为空气中的氧含量，以避免其他因素对工作环境氧含量的影响。

　　(4) The oxygen content in the working environment of the instrument shall be the oxygen content in the air to avoid the influence of other factors on the oxygen content in the working environment.

　　(5)仪器投入使用时，所有采样管均应充入洁净空气或氮气进行清洗;在仪器的进口处应安装过滤器，以防止在空分装置启动时，采样线上的杂质损坏传感器。

　　(5) When the instrument is put into use, all sampling pipes shall be filled with clean air or nitrogen for cleaning; a filter shall be installed at the inlet of the instrument to prevent impurities on the sampling line from damaging the sensor when the air separation unit is started.

　　(6)保证仪表的排放管路有平滑的大气压，以避免压力过大和排气管堵塞，影响仪表的测量精度。

　　(6) Ensure that the discharge pipe of the instrument has smooth atmospheric pressure, so as to avoid excessive pressure and exhaust pipe blockage, which will affect the measurement accuracy of the instrument.

　　(7)被测样品气体中的可燃气体对氧化锆氧分析仪的测量结果有一定的影响，但可燃气体含量(如甲烷、一氧化碳、二氧化碳等)非常低，对微量氧测量的干扰很小。

　　(7) The combustible gas in the sample gas has a certain influence on the measurement results of zirconia oxygen analyzer, but the combustible gas content (such as methane, carbon monoxide, carbon dioxide, etc.) is very low, which has little interference on the measurement of micro oxygen.