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Global Change Master Directory (GCMD)

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Instruments > In Situ/Laboratory Instruments > Chemical Meters/Analyzers > OXYGEN ANALYZERS

TERME PRÉFÉRENTIEL

OXYGEN ANALYZERS  

DÉFINITION

  • The Oxygen analyzer employs a ceramic zirconium oxide reaction cell, which develops a voltage between surfaces exposed to different concentrations of oxygen. Ambient air is routed to the interior of the cell, with the sample stream routed to the exterior of the cell. When the sample stream oxygen content is 20.9%, the concentration normally found in air, the cell output voltage is zero. As the oxygen content in the sample stream drops, the zirconium oxide cell will sense the difference in oxygen concentration between the sample and the ambient air, and generate a voltage that can be made proportional to the oxygen content of the sample stream. [Summary provided by Rutgers University]

CONCEPT GÉNÉRIQUE

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https://gcmd.earthdata.nasa.gov/kms/concept/feed45ef-ac50-4a63-bd94-1a8f2affaba6

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