How does gas sensors work?

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How does gas sensors work?

2007-05-17 06:38:50 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Engineering

2 answers

Good reading is here
http://www.boulder.nist.gov/div853/Publication%20files/NIST_BCC_Nano_Hooker_2002.pdf

2007-05-17 10:10:17 · answer #1 · answered by Marianna 6 · 0⤊ 0⤋

smoke detectors use an ionized chamber to detect the ionization. A gas sensor is chemical designed for that particular gas. H2S is a very bad poisonous gas and the sensor produces a chemical reaction with just that gas.The reaction will produce a very small electric current. the meter will amplify the signal and give u an accurate reading. Some gases have a cross reaction and so u need to know what u are dealing with.

2007-05-17 16:29:43 · answer #2 · answered by JOHNNIE B 7 · 0⤊ 0⤋