Insulator’s Salt Density Measuring Instrument, a dedicated instrument that can detect not only the external insulation’s equivalent salt deposit density but the Conductivity, is frequently used to prevent the pollution flashover in power system. However, the defects that imported conducted apparatus can’t be directly read out conductivity of salt density and the function of the instrument are seldom, so our company develop a suitable instrument - VKYM3200. With its easy-manipulation and diverse-function, our product has been unanimously admitted by all customers.