APPARATUS AND METHOD FOR REDUCING INTERFERING SIGNALS FROM ATMOSPHERIC GASES IN OPTICAL MEASUREMENT OF GAS IN SEALED PROCESSES OR CONTAINERS

摘要

Optical apparatus for the measurement of one or more target gases in sealed off processes or in containers where the optical path inside the apparatus has been filled with a liquid to change or remove the spectroscopic contribution of gases that could be present in the apparatus itself. The liquid either depleting the gas or changing the spectral properties of the gases normally present in the optical path of the apparatus, the gases normally present would make measurement of the target gas difficult or impossible. Method for the optical measurement of one or more target gases in sealed off processes or in containers where the optical path outside the target area or process is filled with a liquid to change or remove the spectrscopic contribution of the gases normally present outside the target area.