FIELD: measurement technology; conversion of physical parameter under control into electric signal. SUBSTANCE: transducer has controlled and synchronized generator with sensor connected to its control input. Generator output is connected to both inputs of first mixer and to input of second band amplifier. Connected to output of first mixer is input of first band amplifier. Outputs of first and second band amplifiers are connected to inputs of second mixer. Output of second mixer is connected to synchronizing input of generator. Generator and second band amplifier outputs are also connected to first input of phase difference measuring unit. Output of phase-difference measuring unit is connected to register. EFFECT: enhanced accuracy in measuring very low deviations of controlled physical parameter. 2 dwg
