electromagnetic flow meters(hereinafter referred as emf)can be applied to a variety of conductive liquid measurement such as water, sewage, mud, pulp, beverages, chemicals, viscous liquids and suspensions. emf has compact type and remote type. if you choose compact type, means the calculator and flow sensor will be mounted in same place; while the remote type means calculator mounted in different place, the largest distance between calculator and flow sensor is 100m. default is compact type.