High temperature and abrasion resistant temperature...

Details High temperature and abrasion resistant temperature... High temperature and abrasion resistant temperature...

G - Physics

01

K

G01K 1/08 (2006.01) G01K 1/14 (2006.01) G01K 7/04 (2006.01)

Patent

CA 2127950

ABSTRACT OF THE DISCLOSURE A temperature measuring device for measuring the temperature of an abrasive particulate material of the type found, for example, in rotary calcining kilns and the like. The device comprises a temperature sensor producing an indication of a temperature to which the sensor is exposed, circuitry or the like for connecting the temperature sensor to remote equipment for converting the indication to a recognisable form and a protective element shielding the temperature sensor from damage by the abrasive particulate material. The protective element comprises a layer of ceramic material having a matrix of alumina reinforced with 5 to 50% by volume (based on the total volume of the ceramic material) of particles of silicon carbide having an average size, at least in two dimensions, within the range of about 5 to 60 microns. The protective element provides good abrasion, heat- shock and mechanical resistance while exhibiting sufficient thermal conductivity to avoid undue inaccuracies in the temperature measurements.

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