FIELD: measurement technology, measurement of electric and nonelectric values with use of modulating transducers. SUBSTANCE: invention is meant to diminish constant systematic multiplicate errors of instrument converters. This is achieved thanks to formation of additional signal proportional to auxiliary one after formation of first value of output signal of instrument converter, then this signal is summed up with output signal of transducer and second value of output signal of instrument converter is formed as ratio of obtained summary and auxiliary signals. EFFECT: diminished constant systematic multiplicate errors of instrument converters. 1 dwg
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