DESIGN OF DUAL-CHANNEL WIDE-RANGE THERMOMETER FOR TRUE TEMPERATURE MEASUREMENT

摘要

A new thermometer is designed to measure and calculate the true temperature for a target. By selecting optimum measuring waveband&bandwidth and having the radiant and bright temperature measured at the same time, we could get the true temperature using some algorithms without the need to know the emissivity s and s(X,T). The measurement is more accurate than currant multi-wavelength pyrometer by avoiding the errors of estimated emissivity and inner optics radiation. It's measuring range is from ambient temperature to 4000K.. Results are given to support the design.