Method and apparatus for sensing NOx
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United States of America Patent
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Jun 8, 1993
Grant Date -
N/A
app pub date -
Feb 27, 1992
filing date -
Feb 27, 1992
priority date (Note) -
Expired
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Abstract
Apparatus and method for determining the concentration of NOx in a gas mixture. The gas mixture is supplied to two electrodes at which different NOx decomposition conditions are present. The electrodes may be of different materials or sizes or may be positioned in different gas enclosure environments. The NOx decomposes at different rates at the two electrodes and an emf is thus produced between the electrodes. The concentration of NOx in the gas mixture is determined from the measured emf.
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