The opportunity of taking information about signal parameters, for example current, without any interference into the structure of the circuit of the electrical or energetic device is very important advantage of the induction sensors. For these sensors, the paper presents the way of the measurement of the actual value of current by means of the integrated sampling method. It is shown that the result of the measurement does not depend on the self-inductance of the sensor. The way of determination of the integration limits of the signal from inductance sensor for the waveforms containing even harmonics is also shown.