Ammonia compound concentration measuring device and ammonia compound concentration measuring method
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United States of America Patent
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Nov 25, 2014
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app pub date -
Sep 28, 2010
filing date -
Jun 24, 2010
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Abstract
An ammonia compound concentration measuring device includes: a pipe unit through which the circulating gas flows; a converter which is disposed in the pipe unit and converts an ammonia compound into ammonia; a measurement device which measures a first measurement value as a concentration of ammonia contained in a first circulating gas flowing inside a pipe line passing through the converter in the circulating gas flowing inside the pipe unit and a second measurement value as a concentration of ammonia contained in a second circulating gas flowing inside a pipe line not passing through the converter in the circulating gas flowing inside the pipe unit; and a controller which controls operations of the pipe unit and the measurement device and calculates the concentration of the ammonia compound of the measurement subject contained in the circulating gas from a difference between the first measurement value and the second measurement value.
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