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Which of the following is the chopping frequency used for industrial analyzers in the simple infrared analyser for gas analysis?

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Which of the following is the chopping frequency used for industrial analyzers in the simple infrared analyser for gas analysis?

(a) 2-10 Hz

(b) 2-50 Hz

(c) 2-100 Hz

(d) 2-150 Hz

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Question is taken from Infrared Gas Analysers topic in chapter Industrial Gas Analysers of Analytical Instrumentation

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The correct choice is (a) 2-10 Hz

Explanation: The chopping frequency used for industrial analysers in the simple infrared analyzer for gas analysis is 2-10 Hz. The chopper is motor driven.

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