Method for determining the safety of gas mixtures
AssigneeLattice Intellectual Property Limited
InventorElizabeth Jane Hodgkinson
Life of this patent
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Abstract
A method for determining the safety of a gas mixture containing first and second flammable components together with non-flammable components, comprises using an optical detector to make at least two measurements influenced by the concentration in the gas mixture of the first and second flammable components. The percentage lower explosion limit of the gas mixture is calculated by a method based on the combination of the measurements. The method leads to acceptably accurate results, despite the presence of other flammable component(s) in the gas mixture.
Claims19
A method for determining the safety of a gas mixture containing first and second flammable components together with at least one further flammable component and at least one non-flammable component, comprising making at least two measurements of the concentrations of the first and/or second flammable components of the gas mixture with an optical detector and calculating the percentage lower explosion limit of the gas mixture by a method based on the combination of the measurements, wherein two measurements are made under conditions such that each measurement is influenced by the concentration of both the first and second flammable components.
An apparatus for determining the safety of a gas mixture containing first and second flammable components together with at least one further flammable component and at least one non-flammable component, the apparatus comprising an optical detector capable of making at least two measurements of the concentrations of the first and second flammable components of the gas mixture and calculating means capable of being pre-programmed with data indicative of the lower explosion limits for the first and second flammable components and capable of being programmed to calculate the percentage lower explosion limit of the gas mixture by a method based on the combination of said measurements, wherein two measurements are made under conditions such that each measurement is influenced by the concentration of both the first and second flammable components.
Dependencies are inferred from the claim text.