Autrol Smart Transmitter products, manufactured by Duon System, harmonize with all instruments at the field. We have been finding a way to have the best measurement solution in world instruments market. Duon System was established on May in 1989. Since then, we had successfully performed for DSC(Distribution Control System) with more than 70 projects. However, we have focused on developing Smart type, which is core part of field instruments.: Differential, Gauge, Absolute, Temperature and GWR(Guided Wave Radar) transmitters with our own technology as named Autrol. Autrol Smart Transmitter has performed all sorts of applications at more than 45 countries successfully with high class of international quality systems in field along with universal protocol, international certificates and regulations. The results have satisfied End-users and we are very proud of both Duon System and Korea instrument market because no one had a result like Duon System for Autrol Smart Transmitter in Korea. Duon system now, has been supplying to BMWS, BWTS, SCR, Deisel, Boiler, BOG, LNG, Fuel Measuring and etc.