Publication Date:
2019-06-27
Description:
The pressure modulator technique was evaluated for monitoring pollutant gases in the Earth's atmosphere of altitude levels corresponding to the mid and lower troposphere. Using an experimental set up and a 110 cm sample cell, pressure modulator output signals resulting from a range of gas concentrations in the sample cell were examined. Then a 20 cm sample cell was modified so that trace gas properties in the atmosphere could be simulated in the laboratory. These gas properties were measured using an infrared sensor.
Keywords:
INSTRUMENTATION AND PHOTOGRAPHY
Type:
NASA-CR-159175
Format:
application/pdf
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