large memory,different sensor,large range, printer connect to PC low power design high ... °CTM-1:medium size transducer (magnetic) for pipesize:DN50-1000mm, liquid temperature ≤ 110 °CTL-1: Large size transducer (magnetic) for pipe size ... :DN300-6000mm, liquid temperature ≤ 110 °CLiquid typesWater, sea water, industrial sewage, acid and alkali ...