【摘要】 基于受冲击加载样品的温度测量需求,设计了一种测温范围1500 K?10000 K的八通道光学高温计,通过优化计算选取了最佳的工作波长和带宽,使每个通道的线性外推误差控制在2%以内。采用高通低反分光片结合窄带滤光片的分光模式,使每通道光能利用率达到60%以上。采用带宽150 MHz的Si和In Ga As半导体光探测器,工作波长覆盖400 nm?1700 nm,利用黑体炉完成高温计的多点标定。更多还原

【Abstract】 A high-speed, eight-channel pyrometer for precise temperature measurements in the 1500 K to 10000 K temperature range has been designed. It can be used in shock physics experiments to measure temperature of shock loaded sampling. The wavelength and bandwidth of each channel are optimized by analysis and calculation. The semiconductor detectors of Si and In Ga As are used as photoelectric devices, whose bandwidth is 150 MHz and working wavelength covers 400 nm~1700 nm range. By combing the high-transmittance beam-splitters and narrowbandwidth filters, the peak spectrum transmissivity of each channel can all be higher than 60%. This pyrometer is calibrated by using high temperature blackbody furnace and standard opto-electronic pyrometer.更多还原