Device for detecting the level of the slag in a metal pool
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United States of America Patent
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Nov 14, 1989
Issued Date -
N/A
app pub date -
Jul 26, 1988
filing date -
Sep 28, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The device has a lance. The lance is moved towards said molten bath level. An antenna is provided at a downward end of the lance for coaction with the slag interface (interfaces), when the lance is moved towards the slag interface (interfaces). A sensitive detection circuit is connected to said antenna. The antenna is during its downward movement capacitively coupled to said slag layer, and the detection circuit detects a predetermined impedance change (predetermined impedance changes) at the antenna provided as it is moved towards the interface (interfaces).
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