A Gas Analyzer is a tool which is utilized to measure the concentration of a certain gas in a given mixture of gasses from a stream or a process. Gas analysis may use different technologies, like tunable diode laser spectroscopy, infrared gas analysis, zirconia oxygen analysis and so on. It is a device used to measure exhaust gases caused by combustion. Also known as an emission gas analyzer, it effectively measures different gases present and gives readings about their content. It is very effective.