Aerosol Instrumentation >> Ecotech

Aerosol Conditioning System (ACS)

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    The hygroscopic properties of aerosols are an important parameter to assess in order to accurately model the effect of aerosols on the earth’s radiative balance.

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      By exposing the aerosol to different relative humidity, Ecotech’s Aerosol Conditioning System (ACS) enables these properties to be measured by a wide range of instruments. The system provides for simultaneous control of humid and dry sample channels, allowing comparison of real-time measurement by two parallel instruments. Ecotech’s ACS can be used with a wide range of aerosol monitoring instruments to determine the effects of humidity on aerosols. For instance, while one instrument measures the ambient air at a consistent low relative humidity of less than 40%, the other instrument can measure the same sample which has been passed through a humidifier, to accurately vary the sample’s relative humidity from 40% to 90% over a user definable interval. By comparing the measurements of the two instruments, the hygroscopic properties of the aerosol can be determined.