What are the two major components of the EC/IR II intoximeter?

The two major components of the EC/IR II intoximeter are indeed the electrochemical cell (EC) and the infrared (IR) technology. The electrochemical cell is used for measuring the concentration of alcohol in a breath sample, utilizing a chemical reaction that produces an electrical signal proportional to the alcohol level. On the other hand, the infrared component measures breath alcohol by detecting specific wavelengths of light absorbed by alcohol molecules.

This combination of technologies allows for an accurate and reliable analysis of a person's blood alcohol content (BAC) through breath samples. The electrochemical cell is particularly effective for lower concentrations of alcohol, while the infrared component can handle a broader range of alcohol concentrations, improving the overall reliability and accuracy of the intoximeter readings.

Understanding these two components is critical for law enforcement officers who use these instruments in the field, as it provides insight into how breath alcohol testing works and the principles behind the technology used in determining impairment due to alcohol consumption.