Continuous radar level measurement is based on the theory of electromagnetic wave propagation by the British physicist James C. Maxwell in 1865. Maxwell postulated that the field lines of a changing magnetic field are surrounded by annular electrical field lines, even in the absence of electrical conductors.
Inspired by this theory, the German physicist Christian Hülsmeyer patented his telemobiloscope, the first radar device of this type in Düsseldorf in 1904. For this innovation, he is rightly known as the inventor of the „original radar“.
Introduced in 1989, the BM 70 from KROHNE was the first 10 GHz FMCW radar transmitter for level measurement in process tanks available on the market. The 2-wire OPTIWAVE series that followed in 2004 featured specific options for liquid and solid applications e.g. OPTIWAVE 6300 with its unique Drop antenna design for measuring solids.
With the OPTIWAVE 1010 (6 GHz), the OPTIWAVE 5200 (10 GHz) and now the new OPTIWAVE series of 24 and 80 GHz radars, KROHNE offers the appropriate frequency for each application. The new OPTIWAVE 5400 / 6400 / 7400 (24 GHz) and OPTIWAVE 3500 / 6500 / 7500 (80 GHz) radars are each designed for specific industry needs. They improve our portfolio for reliable and accurate level measurement of liquids and solids, even in most difficult applications.