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The BinMaster Guided Wave Radar (GWR-100) level sensor measures powders, bulk solids, and liquids in vessels up to 78 ft tall. It provides level measurement using time domain reflectometry to measure the distance, level, and volume of material. The measurement data is converted to a 4-20 mA output with HART communication and can be viewed via a graphical display on the device or an optional local display using the SAP-300 plug-in display unit. BinMaster. 800-278-4241.