E4500 Portable Emission Analyzer is developed for emissions monitoring and maintenance and tuning of combustion processes including burners, boilers, gas and diesel engines, furnaces, turbines, kilns, heaters, and laboratory analysis. This analyzer is having a dilution pump for CO auto-range measurements up to 50,000 ppm. User customized display screen & print-out content, stack gas & air temperature measurements, gas sensors are pre-calibrated & field replaceable are some attributes of this E4500 Portable Emission Analyzer.