The purpose of the "chopper" device in conventional infrared analyzers is to:
A) Interrupt the flow of gas through the connective tubing.
B) Create a vacuum to allow gas to be ionized.
C) Alternate the radiation reaching the reference and detector cells.
D) Protect the infrared detector from excessive exposure.

Question

Quizplus · Accepted Answer

The "chopper" device alternates the radiation between the reference and detector cells in order to provide an accurate measurement of the sample. This helps to compensate for any fluctuations or inconsistencies in the infrared source or other components of the instrument.

The Purpose of the "Chopper" Device in Conventional Infrared Analyzers