Abstract: The invention relates to a measuring device having a transmitter (1, 2, 3) for transmitting a measurement signal, a receiver (4) for receiving a response to the transmitted measurement signal, and a signal processing device (7, 8, 9; 18) for determining a measurement result from the response, the transmitter and/or the receiver having a coil (3; 4; 16), the measuring device having a calibration device for reducing an interference influence on the measurement result, characterized in that the calibration device is configured such that a current pulse can be introduced into the coil (3; 4; 16) from a current source (DC) and the signal processing device (7, 8, 9; 18) can perform a measurement value correction using the calibration signal generated by the current pulse and can determine a measurement result from the response and the measurement value correction. The invention further relates to a measuring method.

Abstract: A method for calibration of electromagnetic induction measurement systems. The method includes transmitting, by at least one transmitter of an electric induction measurement system, a magnetic field as a primary signal, wherein the transmitting the magnetic field as the primary signal triggers a current in the soil which current generates a secondary signal, and recording, by a receiver of the electric induction measurement system, the secondary signal at each of at least two heights of the receiver relative to a soil to be measured in order to create an input vector that is a combination of soil properties and environmental properties that contain the properties of the electric induction measurement system, that contains a dataset of n conductivity values of n layers, and that creates, as a starting value, an initial value vector. The initial value vector includes assumptions and apparent electrical conductivities for m measurement heights.

Abstract: A method for calibration of electromagnetic induction measurement systems. The method includes transmitting, by at least one transmitter of an electric induction measurement system, a magnetic field as a primary signal, wherein the transmitting the magnetic field as the primary signal triggers a current in the soil which current generates a secondary signal, and recording, by a receiver of the electric induction measurement system, the secondary signal at each of at least two heights of the receiver relative to a soil to be measured in order to create an input vector that is a combination of soil properties and environmental properties that contain the properties of the electric induction measurement system, that contains a dataset of n conductivity values of n layers, and that creates, as a starting value, an initial value vector. The initial value vector includes assumptions and apparent electrical conductivities for m measurement heights.