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Germanium Window for Gas Detection

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Knight Optical Germanium Window for Gas DetectionExhaled Breath = 78.04% Nitrogen + 13.6%-16% Oxygen = CO2 Car Exhaust = Carbon Dioxide + Carbon Monoxide + Sulphur Dioxide + Nitrogen Oxides + Hydrocarbons. How do we know this? Gas detection in Continuous Emission Systems (CEMS), combustion analysers and environmental monitoring are key to ensuring that the world we live in is monitored for its pollution, and environments we work in are safe to do so as gases can be detrimental to life. Knight Optical provides a number of optical components that are used in Gas Detection Systems.

We can also provide interference bandpass filters that work within the IR, front surface mirrors, gas cells and singlet lenses and window made from Germanium (Ge), Calcium Fluoride (CaF2), Silicon (Si), Quartz/ Fused Silica, Magnesium Fluoride (MgF2) and Sapphire (Al2O3). Aren’t you a lucky bunch of people?! Gases are detected at a specific wavelength and all these components work harmoniously to detect what type of gas you are dealing with and the intensity of the gas. Carbon Monoxide (CO) – 4.73µm Nitric Oxide (NO) - 5.24µm Sulphur Dioxide (SO2) – 7.42µm Hydrogen Chloride (HCl) – 3.55µm Carbon Dioxide (CO2) – 10.7µm Germanium (Ge) is used within Gas Detection as this very special Infrared Material can transmit over 45% between the 2-14µm up to a temperature on 45°C making it ideal for detecting the gas wavelengths across the whole spectrum.

Check out our stock range online, that’s always a good starting point for a prototype to test a concept or to see whether your current system can be improved.


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