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U.S. Department of Energy
Office of Scientific and Technical Information

Pneumatic gap sensor and method

Patent ·
OSTI ID:868180

An apparatus and method for monitoring and maintaining a predetermined width in the gap between a casting nozzle and a casting wheel, wherein the gap is monitored by means of at least one pneumatic gap sensor. The pneumatic gap sensor is mounted on the casting nozzle in proximity to the casting surface and is connected by means of a tube to a regulator and a transducer. The regulator provides a flow of gas through a restictor to the pneumatic gap sensor, and the transducer translates the changes in the gas pressure caused by the proximity of the casting wheel to the pneumatic gap sensor outlet into a signal intelligible to a control device. The relative positions of the casting nozzle and casting wheel can thereby be selectively adjusted to continually maintain a predetermined distance between their adjacent surfaces. The apparatus and method enables accurate monitoring of the actual casting gap in a simple and reliable manner resistant to the extreme temperatures and otherwise hostile casting environment.

Research Organization:
Armco Inc. (Middletown, OH)
DOE Contract Number:
FC07-88ID12712
Assignee:
Armco, Inc. (Middletown, OH)
Patent Number(s):
US 5092392
OSTI ID:
868180
Country of Publication:
United States
Language:
English