NDIR Gas Analyzer NG3000 series is a reliable and cost effective measuring system, where it fulfills the requirements to monitor and process control raw gases/exhaust air. The system has the uniqueness that can be adapted to specific applications to handle a range of continuous flue gas monitoring tasks. This system is very reliable and flexible system which requires self monitoring, perform zero balancing automatically and output the appropriate status signal. It performs barometric correction by expanding to incorporate a pressure that correct the test result to take account of fluctuations in atmospheric pressure.