G - Physics – 01 – K
Patent
G - Physics
01
K
G01K 7/30 (2006.01) G01K 7/36 (2006.01)
Patent
CA 2075931
2075931 9112503 PCTABS00006 The invention concerns a method and an apparatus for measuring the temperature of an electrically conductive material, said method being based on the measurement of the thermal noise of the material. In the method, the fluctuation of the magnetic field generated by the random motion of the charge carriers in the conductive material is measured using a resonant circuit (3) without contact with the material (1) under measurement. The apparatus comprises a sensor (5) provided with a resonant circuit (3), the reactance element of which is placed at a distance (s) from the material (1) whose temperature is to be measured, and a preamplifier (2), said sensor (5) being mounted inside a frame (20) made of a conductive material, such as copper.
Holappa Lauri
Seppae Heikki
Ridout & Maybee Llp
Valtion Teknillinen Tutkimuskeskus
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