I have a question regarding zirconia
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The customer’s site is a harsh environment. It is a closed environment in which broken items contain flammable gases, as well as gasoline and diesel; when these items are broken, flammable and explosive gases are generated. . Zirconia is used to measure the oxygen content. A bypass pipe was installed at the very top of the tank. Zirconia is placed inside the bypass tube; the oxidation heating temperature is 700 degrees. Measurements are taken for combustible gases, and there is a risk that the probe at 700 degrees might be damaged. The bypass pipe sends the gas back into the sealed tank.
It feels like the environment of this app is not secure
This isn’t an issue; choosing an explosion-proof zirconia version or an intrinsically safe type will suffice. Since it’s a sealed environment with no personnel present, using nitrogen is a good option, but care must be taken to ensure there are no leaks, as this could lead to suffocation
Why must zirconia be used to measure oxygen content? Laser spectroscopy gas analyzers can also do this, and they are very safe. If you’re interested, I can send you some materials at Q 2774112622
In this case, zirconia oxygen analyzers cannot be used, and explosion-proof zirconia types are also not suitable for such environments and atmospheres. The principle of oxygen measurement using zirconia is based on oxygen electrocells. Due to the presence of flammable gases in the atmosphere, the zirconia probe, which operates at temperatures between 600 and 800 degrees, causes oxygen to react with the components of these flammable gases, thereby affecting the accurate measurement of oxygen concentration. If measured using zirconia, the probability of a hazardous situation is low, but complete distortion in the measurement is possible. In this case, it is best to use a paramagnetic oxygen analyzer, or an electrochemical oxygen sensor that is not affected by flammable gases.
Based on what the poster has described, I personally believe that this type of zirconia oxygen analyzer cannot be used; instead, an intrinsically safe oxygen analyzer should be employed.
I’m a newcomer; I came in to take a look and learn something*