Method and device for measuring gas component concentration inside a glass unit

Abstract

A non-invasive method for determining a concentration of a gas component in a gas mixture contained in a spacing of a glass unit having at least two glass sheets spaced apart from each other and forming said spacing. One or more light beams is applied at an angle to the surface of said glass unit, wherein the wavelength of the emitted light beam is varied around or over the at least one absorption line of the interest gas component. The light beams transmitted through or reflected from at least one surface or interface locating at the opposite side of the spacing are collected by a detector and non-linear variations in the intensity of the t transmitted or reflected light beams over an absorption line of the interest gas is then component determined. The concentration of the gas component to be measured is determined based on said non-linear variations in the intensity.

Description

technical field

[0001] The present invention relates to a method and apparatus for measuring the concentration of a gaseous component in a glass unit or any other similar transparent container of one or more individual chambers. Furthermore, the present invention relates to measuring the dimensions, laminations and metallic coatings of one or more individual chamber glass units or any other similar transparent containers. Background technique

[0002] In the glass manufacturing process, sheets of glass (known as float glass) can be combined with different types of elements, such as coatings or tempered layers, to create glass panes with specific properties for different purposes. For example, insulated glass units IGUs are typically constructed using configurations with two or more glass sheets with closed gaps between the sheets, wherein the closed gaps are filled with a gas with low thermal conductivity, such as oxygen, Argon, xenon, krypton, nitrogen or mixtures of those...