T-Series Inline Gas Analyzer improves gas measurement accuracy over the traditional non-dispersive infrared (NDIR) analyzers using Tunable Filter Spectroscopy (TFS™), a spectroscopic scanning technique capable of generating slices of spectra in the infrared region. Each scan produces an absorption spectrum which is used to identify compounds and provide concentration values. TFS technology improves gas identification accuracy and selectivity by subtracting out spectra from interferent gases within the same infrared regions. This spectral processing capability also provides multi-component measurement.