| 摘要 |
Apparatus for measurement of a temperature of a moving metal slab to provide a measured temperature indication corresponding to an actual temperature at a location on the surface of the slab. The apparatus comprises a first temperature measuring sensor mounted to move between a first position in which the first sensor is out of contact with a surface of the slab, and a second position in which the first sensor contacts the surface at the location, the first sensor generating an output corresponding to a detected temperature when the contact is made with the surface; a drive mechanism to move the sensor between the first and second positions of the first sensor; at least one additional temperature measuring sensor mounted adjacent to the first sensor to move between a first position in which the at least one additional sensor is out of contact with the surface of the slab, and a second position in which the at least one additional sensor contacts the surface at the location, the second sensor generating an output corresponding to a detected temperature when the contact is made with the surface; a drive mechanism to move the at least one additional sensor between the first and second positions of the at least one additional sensor; and a comparator for comparing the outputs of the temperature measuring sensors for determining whether or not the detected temperatures of the sensors at the location differ by less than a particular amount, and for providing a measured temperature indication representing the actual temperature of the surface at the location based on one or more of the outputs, only if the detected temperatures differ by less than the predetermined amount. The invention also relates to a corresponding method of measuring the surface temperature.
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