KROHNE Inc. has introduced its OPTIWAVE 7500 frequency-modulated continuous-wave (FMCW) radar level transmitter for demanding liquid applications, such as narrow tanks with long nozzles or where internal obstructions like agitators or heating coils are visible. This technology provides an ideal solution for a wide range of level monitoring and measurement applications.

With a small beam angle and negligible dead zone, this two-wire 80 gigahertz (GHz) FMCW radar is the optimal choice for continuous, non-contact level measurement in both extremely small and very high tanks (up to 100 meters [m]/328 feet [ft.]). The level radar signal can even pierce through tank roofs made of non-conductive materials to achieve accurate measurements. The product can measure various media including liquids, slurries, and pastes, and its measuring range for liquids spans 0–100 m (0–328 ft.).

The OPTIWAVE 7500 also features versatile, flush-mounted antennas that eliminate intrusion into the tank. Its PEEK and PTFE Lens antennas are insensitive to deposits and well-suited for corrosive environments. For further protection from corrosive media, PEEK and PTFE lens antennas feature flange plate protections and PEEK thread protection. An optional 112 millimeter (mm) (4.4 inch [in.]) antenna extension is available for long nozzles.

The FMCW radar features an empty tank spectrum function that eliminates false reflections caused by tank internals. Reliable measurement in empty tanks is further strengthened by Tank Bottom Management (TBM). With TBM, dedicated algorithms filter or compensate for irregular radar wave reflections that occur at the tank bottom or when the vessel is empty. This allows for quick and easy commissioning no matter the tank’s size, material, or geometry.

Finally, the OPTIWAVE 7500 provides a large, backlit LCD screen with a four-button keypad for operation with a bar magnet, eliminating the need to open the housing cover. Moreoevr, PACTwareFM, HART® DD and DTM are all provided free of charge with full functionality. The product is SIL 2/3 certified for safety-related applications, and has received extensive device diagnostics according to NAMUR NE 107.

OPTIWAVE 7500 comes with a 3-year warranty.