apparatus for determining correct readings in the presence of pyrometriques steam disturbing

摘要

Apparatus for determining correct pyrometer readings with steam interference present uses a silicon cell pyrometer and a total-radiation pyrometer to measure surface temperature of a steel slab at hot-rolling temperature. The output of the silicon cell is linearized as a multiple of the total-radiation pyrometer output by the ratio of the error of the two pyrometer readings when steam is present. The two outputs are combined to provide a true temperature reading.