Method and apparatus for evaluating measuring signals
AssigneeAMEPA Angewandte Messtechnik und Prozessautomatisierung GmbH
InventorEdmund Julius
Life of this patent
Estimating the term…
Abstract
A method for evaluating measuring signals of an electromagnetic field is disclosed which is in interaction with an electrically conductive fluid for detecting components in the fluid which differ from the electric conductivity of the fluid, with the measuring signals being divided into at least two channels and being evaluated in order to detect different distributions and concentrations in the fluid.
Claims18
A method for evaluating measuring signals of an electromagnetic field which is in interaction with an electrically conductive fluid for detecting components in the fluid which differ with respect to the electric conductivity of the fluid, characterized in that the measuring signals are divided into at least two channels and are evaluated in order to detect different distributions and concentrations in the fluid.
An apparatus for detecting non-metallic components in a flowing metallic melt with at least one transmitter coil which is flowed through by an alternating current for generating an electromagnetic field which penetrates the flowing melt at least partly, a measuring element for measuring disturbances of the field at a measuring point which is flowed through by the melt and with an evaluating device, characterized by a first filter element which guides the disturbances of the electromagnetic field above a lower cut-off frequency fGu into a first channel with which non-metallic components can be detected which are entrained by the melt and are expanded especially in the direction of flow, and by a second filter element which guides the disturbances of the electromagnetic field above an upper cut-off frequency fGointo a second channel with which components can be detected which are distributed in the melt and are entrained in a discrete manner.
Dependencies are inferred from the claim text.