Levelstate EDLI is an advanced electronic water level monitoring system. An EDLI system includes multiple Probes fitted to a Water Column and connected to an Electronic Unit, which is widely accepted as reliable and maintenance-free equipment. It is an electronic alternative to the gauge glass, providing a significant improvement in accuracy, visibility, reliability, and safety. The system enables transmission of the water level condition to a remote display and the application of alarm and control functions. The technology utilizes the well-established principle of resistivity discrimination between steam and water to provide a clear indication of the water level in a boiler drum or any other vessel, such as a feedwater heater, deaerated feedwater storage tank, or condenser hotwell.