Heron Instruments 4-20mA pressure transmitter provides highly accurate water level measurement for a wide variety requirements that involve real time pressure readings. The Heron 4-20mA is ideal for use in tanks, wells and boreholes. The Heron 4-20mA is easily adapted to 3rd party data loggers, telemetry systems, Scada Systems, and digital displays. The two wire 4-20mA current loop is the most widely used signal transmission for transducers in industrial applications. It offers excellent noise immunity and is available in lengths up to 2000 ft (600m).