Optical absorbance measurements with self-calibration and extended dynamic range
An optical absorption, absorptivity technique used in the field of performing optical absorption measurements and systems
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[0023] Due to the sensitivity of harmonic linear on the change of background gas composition, another potential problem may occur in the preparation spectrum analyzer.Different gases in the background flow may have a different impact on harmonic linear.Regarding the calibration of the analyzer, the harmonic linear directly determines the accuracy of the measurement gas measurement.The changes in the linear caused by the interaction of the metering gas and other gas in the entire stream are called collision and width.For example, if the user wants to change to measuring pure o 2 , Air or CO 2 If the water and gas are in the water, it is to measure pure N 2 2F -based analyzers calibrated by water and gas may need to return to the manufacturer to re -calibrate.Different quality and structure of the background molecules may have a great impact on 2F line -shaped, so it has a great impact on the concentration reading.As an example, when the selected frequency modulation amplitude, the ...
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