A meter of electrical conductivity and magnetic field characteristics using an eddy current sensor

A transformer-type sensor has been developed based on a current-vortex converter, enabling the measurement of electrical conductivity and the strength of a permanent magnetic field. A vortex converter converts a measured property of a substance (for example, electrical conductivity or magnetic field strength) into an electrical signal. It consists of two coils: one creates a magnetic field, and the other measures its changes. A block diagram of a transformer sensor is presented, and a measurement procedure is described that enables high-accuracy restoration of the electrical conductivity of the control object from the applied voltages to the measuring winding of the sensor. This sensor also allows you to measure the strength of the permanent magnetic field of the monitoring object. The virtualized transformer based on it allows you to implement a wide range of instrument measuring functions in a single computer program that does not require additional software to be installed on a PC. Based on the derived mathematical relations, hodographs were constructed to illustrate the influence of various parameters of the medium and the sensor on the applied voltages. Hodographs were also constructed, reflecting the dependence of the applied voltage on the object's electrical conductivity, allowing evaluation of the electrical conductivity of a substance with fixed sensor parameters.