Аннотация. В статье представлены экспериментальные данные о результатах измерения температуры в условиях запыленности пирометрами частичного излучения с разными спектральными характеристиками. Проведена оценка влияния запыленности на случайную и систематическую погрешность рассматриваемых приборов. Было исследовано два способа введения внешней коррекции и рассмотрена эффективность использования показаний внешнего пылемера для компенсации влияния пылевого облака. Установлено, что в реальных условиях коэффициент коррекции, применяемый для компенсации влияния пыли, должен быть вычислен достаточно точно (±0.04).
The article presents the simulation results of noncontact temperature measurements uncertainty (in the measurement range of 350…750 °C), which were performed using dual-channel radiation thermometers through a cloud of clinker dust in the cases of different dust concentrations. It is shown that the use of dual-channel spectral ratio radiation thermometers is more efficient compared to single-channel measuring instruments. According to the simulation study the best results in terms of the uncertainty level of dual-channel radiation thermometer were obtained by the using in its design the couple of a wide-band and a narrow-band measuring sensors. It is proven that in order to cover the entire temperature range of 350…750°C with an acceptable level of uncertainty, it is advisable to utilize the dual-channel radiation thermometer in the combined single-channel and dual-channel mode of operation.
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