The Titan-OL (On-Line) system provides real-time extractive-gas-phase analysis for online and continuous multi-point analysis. It includes a rugged, industrial Fourier transform infrared (FTIR) spectrometer, gas cell(s), sample manifold, valve-control electronics, and software. The hardware is encased in a NEMA-rated enclosure or in a standard industrial rack-mount cabinet. The manufacturer’s exclusive fiber-optic distribution electronics provide a single hub for temperature, pressure, mass flow, external alarm, and optical switching signals.