The Krohne OPTIFLUX 4000 is an electromagnetic flow sensor. The Krohne OPTIFLUX 4000 can be combined with the IFC 050, IFC 100 or IFC 300 signal converters to form the OPTIFLUX 4050, OPTIFLUX 4100 and OPTIFLUX 4300 electromagnetic flowmeters for basic to advanced applications with aggressive and abrasive media or other conductive liquids.