Method and apparatus for not - invasive determination of the flow velocity, of the volumetric flow or the electrical conductivity of a flowing fluid

摘要

With the present invention is to provide a universally usable, inexpensive method and an associated apparatus are provided, with which the flow velocity, the volume flow or the electrical conductivity of a in a channel, channel, a tube or the like flowing fluid independently of its opacity and can be determined not - invasive.According to the invention, the flow velocity, the volume flow or the electrical conductivity of a flowing fluid with the aid of the measurement of the eddy currents induced magnetic secondary field with a suitable magnetic field sensor is determined.