RADAR LEVEL INDICATOR Russian patent published in 1999 - IPC

FIELD: measurement of level of substances including corrosive, toxic and explosive media in storages and closed reservoirs at factories in chemical, petrochemical, food and other branches of industry. SUBSTANCE: radar level indicator realizes principle of close radiolocation with use of pulse double-range linear-frequency modulation of signal in millimeter range of wave lengths. It has antenna unit, mixer, synchronizer, two circulators, two filters, two generators of modulating signal, amplifier, calibration waveguide, coupler, counter, indicator, SHF generator, control unit, two switches, key former, digital-to-analog converter, absorbing attenuator, mechanical attenuator, pumping generator, two limiters, controlled load, commutator, summing amplifier, unit of reference voltages, microprocessor, unit of level converters, threshold unit and compensation unit. All elements of radar level indicator are functionally intercoupled. EFFECT: enhanced measurement precision. 3 cl, 8 dwg