Assignment about ( Breathalyzers using Infra-red Or Electrochemical sensors. ) C

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Assignment about ( Breathalyzers using Infra-red Or Electrochemical sensors. )
Could you please help for do this assignment, With 1-procedures of data collected 2- findings (results and analysis of data) 3- discussions of limitations/ findings 4- conclusion Use wide range of resources - websites, technology based books etc.
Assignment about ( Breathalyzers using Infra-red Or Electrochemical sensors. )
Could you please help for do this assignment, With 1-procedures of data collected 2- findings (results and analysis of data) 3- discussions of limitations/ findings 4- conclusion Use wide range of resources - websites, technology based books etc.
Assignment about ( Breathalyzers using Infra-red Or Electrochemical sensors. )
Could you please help for do this assignment, With 1-procedures of data collected 2- findings (results and analysis of data) 3- discussions of limitations/ findings 4- conclusion Use wide range of resources - websites, technology based books etc.

Explanation / Answer

Breathalyzers can be classified into three types:

1)Infrared :The main characteristic that differentiates infrared based breathalyzers from semiconductor and fuel cell testers is that no chemical reaction takes place with infrared devices. Both semiconductor and fuel cells oxidize the alcohol vapor in electro-chemical reaction. Both devices interact with the alcohol to measure it. Infrared sensors, on the other hand, do not interact with the alcohol in the sample; instead, it view the sample and measures the effect of alcohol on the infrared beam. Therefore, in infrared type breath testing, the original sample can be preserved for additional future analysis.

2)fuel cell:

cell is composed of a wafer with each surface coated with gold and platinum black, and sandwiched between a porous material containing a dilution of sulfuric acid. Electrode are attached are attached to each side of the wafer. When alcohol passes across the surface of the wafer, a chemical reaction takes place. Alcohol is converted into acetic acid and, freeing excess electrons. The small amount of electricity generated is directly proportional to the number of alcohol molecules that are present.

Fuel cell breathalyzers are expensive due to high cost of platinum as well as higher cost of a delicate and precise manufacturing process. Sometimes, the fuel cell sensor itself could cost higher the the entire semiconductor based breathalyzer. A Fuel Cell based unit has several advantages over the semiconductor based alcohol testers.

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