Importance

Loading Importance Indicators...

Abstract

The CO₂ content in a liquid, in particular a beverage, is to be tested. Three absorption measurements of the liquid are carried out respectively at a wavelength within a first wavelength range between 4200 and 4300 nm to measure a first absorption value with attenuated total reflectance, at a second wavelength within a second wavelength range between 3950 and 4050 nm and a second absorption value with attenuated total reflectance, and at a third wavelength within a third wavelength range between 3300 and 3900 nm and a third absorption value with attenuated total reflectance. A pre-defined model function is used for determining the CO₂ content based on the first, second and third absorption values. The model function is applied to the absorption values and the result of the evaluation is kept available as the CO₂ content of the liquid to be tested.

Loading the Abstract Image...

First Claim