According to different principles, oxygen analysis instruments can generally be divided into three categories: fuel cell method oxygen analyzer, zirconia sensor of zirconia method, and magnetic oxygen analyzer. There are many precautions in the use of oxygen analyzer, otherwise it is very easy to have problems such as inaccurate analysis results*. So, here are a few things to note for your reference:

  1. Before the oxygen analyzer is used for the first time, leak detection should be performed on connection points, solder joints, valves, etc., to ensure that oxygen in the air will not reverse seep into the pipeline and the inside of the instrument, causing the measured value to be high.
  2. Before using the oxygen analyzer again, the piping system should be cleaned, and the leaked air should be blown out. At the same time, make sure that no air leaks when connecting the sampling pipeline.
  3. The change of oxygen content in the sample gas will be affected by the pipe material and surface roughness. Therefore, copper pipes or polished stainless steel pipes are generally used for connecting oxygen analyzer pipes, instead of plastic pipes, rubber pipes, etc.
  4. When the oxygen analyzer is performing microanalysis, avoid all kinds of pipe fittings, valves, meter heads and other dead angles from polluting the sample gas. Therefore, the gas circuit system must be simplified as much as possible, and the dead angles of the connecting parts should be small. Power prevents the dissolved oxygen from escaping and causing pollution. It is best to use equipment such as water seal, oil seal and wax seal to ensure that the data is correct.

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