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What are the different techniques or the operating principles on which the ozone sensors work?
Umar505
There are two common types.
One uses UV-B (or other less characteristic radiation) absorption, and infers ozone concentration from the Beer-Lambert law. Good for measuring ozone in a gas stream.
Another uses a compound that is oxidized by ozone, and this reaction causes / enables an electrical current flow. Good for measuring ozone gas in air or a liquid stream. These sensors usually require replacement / refreshment of the liquid in the cell, more frequent calibration, and are usually not ion specific to ozone (chlorine will also be indicated) so variable water quality can make calibration a problem.
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∙ 14y ago
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