METHOD AND DEVICE FOR CALIBRATING ELECTROMAGNETIC OHMMETERS Russian patent published in 1998 - IPC

FIELD: measurement technology. SUBSTANCE: device has control unit, calibrating unit and printer unit, the first and the second leads for connected to electric circuit of the instrument, the first filter connected to an input to of the calibrating unit and the first lead coupled with the second filter output. Tuning capacity and sinusoid voltage measurement unit are set in parallel between the common bus of the device and the second lead. The measurement unit is connected to the control unit. Sinusoid voltage oscillator unit connected to the control unit is set between the common bus of the device and the second filter input. Method involves using an instrument for measuring voltage at connection circuit output to determine arrow index unit position. EFFECT: wide range of functional features. 2 cl, 2 dwg