Oil Dew Point Tester uses Coulometric Karl Fischer titrators for Coulometric water determination. This instrument uses powerful new generation processing units and brand new peripheral circuit and that the superior low power consumption make it capable to use small size storage battery and portable. Judging the electrolysis endpoint is based on testing electrode signal and the stability and accuracy are the vital factors of determination precision. Applying advanced components and methods make it capable to detect the electrode signal accurately. New software compensation revision determination is applied and determination precision is highly improved based on the deep knowledge of electrolyte characteristics. Big LCD screen with touch screen button. Display interface has graphic and words showed simultaneously thus it is direct and friendly.