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.
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.
微量氧分析儀在使用過程中難免會出現各種情況下的故障，下面就來介紹一下:
It is inevitable that the micro oxygen analyzer will fail in various situations during use. Here is an introduction:
(1)儀器故障表明計量槽溫度偏低。檢查量筒熱電偶的連接，檢查多通道轉接板的安全，檢查線路板的連接。
(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) 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) 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)儀器工作環境中的氧含量應為空氣中的氧含量，以避免其他因素對工作環境氧含量的影響。
(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) 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)保證儀表的排放管路有平滑的大氣壓，以避免壓力過大和排氣管堵塞，影響儀表的測量精度。
(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) 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.
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2019-12-24
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