Microwave sensor for checking the level of the molten metal in continuous casting processes
First Claim
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1. A device for measuring the level of the metal surface of a molten metal bath comprising a microwave signal generator for producing fixed frequencies connected to an irradiating head;
- said irradiating head including a waveguide arranged with its axis perpendicular to the metal surface of the molten metal bath to receive a reflected wave;
means being further provided for sensing, in a position fixed in space, the value of a field determined by a standing wave which is established in said waveguide and to deliver a signal which is a function of that value of the field to a detector.
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Abstract
A device capable of measuring the position of the level surface of a molten metal bath by exploiting a microwave signal emerging from a waveguide which impinges perpendicularly onto the molten metal so as to originate a standing wave, the position of which is determined by the position of the level surface. The parameters of the standing wave are detected so as to obtain an indication as to the level.
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7 Claims
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1. A device for measuring the level of the metal surface of a molten metal bath comprising a microwave signal generator for producing fixed frequencies connected to an irradiating head;
- said irradiating head including a waveguide arranged with its axis perpendicular to the metal surface of the molten metal bath to receive a reflected wave;
means being further provided for sensing, in a position fixed in space, the value of a field determined by a standing wave which is established in said waveguide and to deliver a signal which is a function of that value of the field to a detector. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- said irradiating head including a waveguide arranged with its axis perpendicular to the metal surface of the molten metal bath to receive a reflected wave;
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