The oxygen content at the chimney outlet of the square box furnace differs from that in the radiation chamber
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At the environmental protection flue gas monitoring port (chimney outlet) of the square box heating furnace, the oxygen content in the flue gas is 2-3% higher than that at the top of the radiation chamber. What other reasons could there be apart from air leakage in the heating furnace?
It’s also possible that there is a problem with the measuring instrument