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Hydrocarbons need to be removed from the sample gas to avoid errors in Hartman and Braun oxygen analyzer.

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Hydrocarbons need to be removed from the sample gas to avoid errors in Hartman and Braun oxygen analyzer.

(a) True

(b) False

I had been asked this question during a job interview.

My question is from Magnetic Wind Instruments in chapter Industrial Gas Analysers of Analytical Instrumentation

1 Answer

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Correct choice is (a) True

For explanation I would say: Hydrocarbons need to be removed from the sample gas to avoid errors. This is because they may react on the heated filaments and lead to a change in temperature and resistance.

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