... 2.wide measuring range ,high accuracy Model ZRE Flue Gas Analyzer is imported originally from Fuji Electric Corporation of Japan. The ... technology, ELPAT SO2,NOx(such as CO, CO2, CH4 of the smoke.The analyzer has range settings, range conversion, fault display and ... expanded to use zirconium oxide to measure oxygen directly. The analyzer with wide measuring range ,high accuracy, fast response time, is ...