Method and measuring device for measuring thickness of a ferromagnetic metal object
OwnerDmitriy Evgenievich AVILOVinventor
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Abstract
The invention relates to a method and a device for measuring thickness of ferromagnetic metal objects. According to the method, a pulse of current is generated in a core coil, the core forming a closed magnetic circuit together with at least a portion of the ferromagnetic metal object; further, the time constant is determined at an exponential voltage resulted from said pulse of current generated in the core coil; and, finally, thickness of the ferromagnetic metal object is determined on the basis of the time constant thus determined.
Claims6
A method for measuring thickness of a ferromagnetic metal object comprising the steps below:
- generating a pulse of current in a core coil, the core forming a closed magnetic circuit together with at least a portion of the ferromagnetic metal object;
- determining the time constant of an exponential voltage pulse generated in the core coil as a result of said pulse of current applied;
- determining thickness of the ferromagnetic metal object on the basis of the determined time constant.
A measuring device for measuring thickness of a ferromagnetic metal object, the device comprising:
- a core configured to form a closed magnetic circuit together with at least a portion of the ferromagnetic metal object;
- a core coil configured to form a pulse of current therein;
- and
- means to determine the time constant of an exponential voltage pulse generated in the coil as a result of the current pulse formation in the coil.
Dependencies are inferred from the claim text.