Method and device for measuring a temperature of a rotating support

摘要

The temperature of a support which rotates with a predetermined angular velocity about a rotational axis is measured. One of more temperature sensors are thermally coupled and rotate with the support. A measurement configuration with an electronic evaluation circuit is assigned to the temperature sensor. The temperature sensor has a ferro-magnetic or paramagnetic material, the magnetic susceptibility of which depends on the temperature according to the Curie law or the Curie-Weiss law. The measurement configuration has a magnetizing device assigned to the temperature sensor and a detector device which is fixed relative to the rotating support. The detector device delivers a measurement signal proportional to the temperature of the support when the temperature sensor passes by the detector device.