Medium e.g. beverage, acid content determining device, has evaluation unit to which output signal is supplied, where signal is determined from actually measured absorption spectrum and predetermined absorption spectrum of medium

摘要

The device has a UV-visible-near infrared spectrometer (19) detecting a spectrum of a medium i.e. fluid (2), to be measured and/or a spectrum of individual components in a wave length range of maximum 1 nanometer. An output signal of the spectrometer is supplied to an evaluation unit (20). The output signal is determined from actually measured absorption spectrum and a predetermined absorption spectrum of the medium and/or the individual components contained in the medium and/or acid content of one of the individual components. An independent claim is also included for a method for determining an acid content of a medium i.e. fluid.