Digital Metal Tube Rotameter with 4-20 mA and 2-Wire Transmission Output.Metal Tube Rotameter is basically a Variable Area Flow Meter for measuring instantaneous flow rate of liquids, gases and steam applications. Metal Tube Rotameter is commissioned where there are demanding pressure and temperature constraints which a normal rotameter cannot withstand. Fully metal design body makes it a robust instrument and is extremely durable, Scharf Automation's Digital Metal Tube Rotameters are fitted with an LCD screen with 4-20 mA 2-Wire Transmission output, suitable for direct interfacing with PLC SCADA system. 4-Wire Option for 4-20 mA output is also available with LED Display, The essential working part is flow tube & precision machined magnetic float & assembly. The position of the float is sensed by a magnet and indicated On the dial in terms of flowrate.