Heraeus Electro-nite International N.v.

Richard F Conti

David Saar

Jack A Kuszyk

Renuka Rodrigo

A system for wirelessly obtaining a measurement of a characteristic of a molten metal is disclosed. The system includes a contact block configured to be operatively coupled to a first end of a substantially hollow lance holder. The contact block is detachably and electrically coupled to and receives analog signals from a measurement sensor. The contact block converts the received analog signals into ultrasonic signals and transmits the ultrasonic signals through the hollow of the lance holder. A receiver block is configured to be operatively coupled to a second end of the lance holder. The second end is opposite the first end of the lance holder. The receiver block receives the ultrasonic signals from the contact block and converts the received ultrasonic signals into a digital voltage signal.

Wireless lance

A thermocouple system is disclosed. The thermocouple system includes a thermocouple having a positive lead and a negative lead. A positive wire is connected at a first end to the positive lead at a first junction and at a second end to a second junction. A negative wire is connected at a first end to the negative lead at a third junction and at second end to a fourth junction. The second and fourth junctions constitute a reference junction. At least one of a thermal conductivity and a gauge of at least one of the positive wire and the negative wire are selected to govern the respective flows of heat from the first junction toward the reference junction and the flow of heat from the third junction toward the reference junction to be of such quantities that the difference in the heat flows is less than a predetermined amount.

Thermocouple extension wire

A probe to measure particulates suspended in molten metal includes an inner tube forming a receiving chamber. The tube includes an orifice permitting molten metal to flow into the chamber. A gas passageway extends out of the tube for connection to a vacuum source. A first electrode including a first member extends into the chamber. A second electrode surrounds a portion of the tube. The first and second electrodes connect to a measurement device for measuring changes in the electrical potential produced by particulates passing through the orifice. A liquidus depressing material within the chamber lowers the liquidus temperature of the molten metal and permits a longer period for measuring particulates therein. A second member is connected to the gas passageway at a first end of the second member. A chill block spaced from the liquidus depressing material is attached to a second end of the second member.

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New Hope, PA, United States of America

Richard F Conti