... flow meter,variable-area metallic rotameter 2>kinds:needle indication,4-20mA output,LCD display 3>horizontal,vertical instal product description of flow ... plant,environmental protection,medical science.principle structureAs the fluid flow upward in the tube,the float moves upward ... LCD indicator:intantaneous delivery number range:0-60000 integrated flow number range:0-9999999*5 2.indicator convert ...