TUNABLE FILTER SPECTROSCOPY  Introduction to the Tunable Filter Spectroscopy Analyzer Tunable Filter Spectroscopy (TFS) analyzer is also known as optical gas chromatography. Which is used to measure multiple components such as C1 to C6+, N2, CO2, H2S, Wobbe Index (WI), Specific Gravity and other few components in real time analysis. Tunable Filter Spectrometer sensor platform consists of a light source, a sample cell for gases, liquids or solids, a wavelength separating element spectrometer and a photo-detector. The wavelength separating element "slices" the wavelength components of the broadband light source which then interacts with the sample molecules. Some of the wavelength components are absorbed and some are transmitted through without any absorption. Tunable Filter Spectrometers use an advanced spectral decomposition algorithm. The resulting spectrum is called absorption spectrum, which acts as "fingerprints" which are used to identify the sampl