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英国Asea研究和革新有限公司的光纤温度计能在0到200℃的温度范围内测量多达24个不同点的温度。这种1110型温度计能同时测量24点的温度,精度为±1℃,分辨率为0.1℃,时间常数为1秒。其传感元件是镓铝砷(GaAlAs)晶体,被装在单根光纤一端上,由仪器中发光二极管发出的近红外光对其激发。在传感器中,光以不同波长光谱的形式转换并返回。波长光谱的值取决于传感器的温度。返回的光波长经计算后
Fiber optic thermometers from Asea Research and Innovation Ltd. in the UK can measure temperatures up to 24 different points over the temperature range of 0 to 200 ° C. The 1110 thermometer can simultaneously measure the temperature of 24 o’clock, the accuracy of ± 1 ℃, a resolution of 0.1 ℃, the time constant of 1 second. The sensing element is a gallium aluminum arsenide (GaAlAs) crystal, is mounted on one end of a single fiber, which emits near-infrared light from the instrument to excite it. In the sensor, light is converted and returned in the form of spectra of different wavelengths. The wavelength spectrum depends on the temperature of the sensor. The returned light wavelength is calculated