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Question
Which of the following is not a cause of the error that could occur in Hartman and Braun oxygen analyzer based on the magnetic wind?
Options:
A .  The filament temperature could be affected by changes in thermal conductivity of the carrier gas
B .  Hydrocarbons in sample stream may react on the heated filaments
C .  Gravitation chimney flow effect lead to errors when cross tube is horizontal
D .  Combustible gases may react on the heated filaments
Answer: Option C
Answer: (c).Gravitation chimney flow effect lead to errors when cross tube is horizontal

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