The physical sensor for pressure measurement

In this paper we will present utilization the magnetic fluid in pressure measurement. Pressure measurements are based on fluidic and magnetic proprieties on magnetic fluids, which allow obtaining values or limited of pressure of gas in a container. The device experimental presented is based on magnetic fluid positioned inside of a coil by the help of a membrane of elastic material. The device experimental consists of a cylindrical vertical nonmagnetic vessel surrounded by a coil filled in the bottom part with the magnetic fluid. In the top part of the vessel, over the magnetic fluid and between two plates of an electric condenser is placed water. This coil is a component of an electrical oscillating circuit, which contains an electric condenser too.