Heater wire with temperature measuring copper shield

H - Electricity – 05 – B

Patent

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Details

H05B 3/02 (2006.01) F24D 13/02 (2006.01) G01K 7/16 (2006.01) G01K 7/42 (2006.01) H05B 1/02 (2006.01) H05B 3/40 (2006.01) H05B 3/46 (2006.01) H05B 3/56 (2006.01)

Patent

CA 2236247

A method of measuring the temperature of a wire which is surrounded by a layer of insulation includes the step of wrapping the layer of insulation with an electrically and thermally conductive ground shield having two opposing longitudinal ends, one of the ends being electrically grounded. A first relationship is determined between the temperature of the wire and a temperature of the shield. A second relationship is ascertained between an electrical resistance of the shield between the longitudinal ends and the temperature of the shield. The electrical resistance of the shield between the longitudinal ends is measured. The temperature of the wire is established by using the first relationship and the second relationship to correlate the measured electrical resistance of the shield to the temperature of the wire.

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