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Micro Fuel Cell Measures Oxygen Concentration

Portable oxygen meter using the Minimod18

Micro Fuel Cell Measures Oxygen Concentration
Oxygen makes up about 21 % of the air in the atmosphere. Normally we take this for granted but for some, oxygen concentration can be a matter of life and death. For a diver it is essential to know the oxygen concentration in the breathing gas in his cylinder, and a cave explorer needs to know the oxygen level in the ambient air he is breathing. This article describes an oxygen concentration sensor and how to process its output.
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