G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 23/26 (2006.01)
Patent
CA 2334063
The system and the method are used for detecting a level of liquid metal at a given location, such as a launder set between an holding furnace and a casting pit. The system comprises an emitter coil and a receiver coil in a side-by-side configuration and in close proximity of the location. In use, an AC signal is applied to the emitter coil for producing an alternating magnetic flux. At least a part of the magnetic flux passes through the location where the level of liquid metal needs to be measured and goes back into the receiver coil. The signal in the receiver coil is monitored and the data are conveyed to a control module which determines the level of liquid metal from the variation of the signal in the receiver coil. The coils of the system are advantageously provided with respective core elements having a high magnetic permeability and which are configured and disposed to channel the magnetic flux. As a result, the system is not significantly affected by the presence of steel on the frame side of the launder and is capable of determining the level of liquid metal with a high signal to noise ratio. It can also be used at other locations besides a launder.
Audet Daniel
Parent Luc
Bdh Industries Inc.
Mccarthy Tetrault Llp
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