Capacitive Sensing Element with a Magnetic Fluid for Detecting of Change of Magnetic Field

The article presents the results of an experimental study of capacitive magnetic field sensors with magnetic fluid. The sensor is based on a change in the capacitance of a magnetic fluid capacitor at influence of magnetic field. The effect of an external magnetic field on a sensitive capacitive element with a magnetic fluid at different concentrations of a magnetic particle is studied. Change of capacity of the lamellar condenser from concentration of magnetic powder in polymethylphenylsiloxane (PFMS-4) liquid is shown.