In order to compare microwave effects with those in conventional processing, accurate
temperature measurement is critical. In the current microwave processing, the thermocouple
tip was 2-3 mm above the sample. During processing the sample was rotating horizontally
about its vertical axis, while the thermocouple was static. To make sure that there was no
significant difference between temperature readings of the thermocouple and the temperature
of the sample, the temperature measurement was calibrated. A circular pellet of 6.35 mm
diameter for white cement clinker was directly fixed to the thermocouple tip (shielded