Non-invasive Online CO2 Measurement with Chemical optical CO2 Sensors Chemical optical CO2 sensors provide a versatile tool for online monitoring of dissolved CO2 in various scale and designs® Athanas Apostolidis, PreSens Precision Sensing, 93053 Regensburg, Germany Accurate CO 2 measurement in the liquid phase has been a challenge for decades. Although off-gas measurement by means of IR-spectroscopy is a proven technology, the corr

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