Photometer for continuous analysis of a medium

摘要

Photometer for continuous analysis of a medium (gas or liquid) containing a plurality of components by using light which passes through the medium and has wavelengths which are absorbed by the components of the medium, the light beam path periodically having two different lengths in the medium to be analysed. Before penetrating into the medium, the light is split into two component beams which traverse differing path lengths in the medium. Processing the different signals thus produced is done by analogy with the main patent.