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一般摄谱仪器都受温度的影响,光栅摄谱仪受温度的影响尤甚。因此有人认为光栅摄谱仪不如棱镜摄谱仪稳定可靠。几年的实践证明的确如此。要保证仪器一年四季都能正常工作,必须克服温度对仪器的影响。达到此目的有两种方法:一是恒定仪器工作时的外界温度;二是改变仪器内部工作条件,使仪器适应外界温度的变化。目前我国基本上采用前者,即增配各种恒温设备与装置,这样造价高,能源消耗大。我们采用后者,调节仪器焦距来适应温度的变化。经过两年的试验摸索和探讨,在积累数据的基础上,总结归纳出平面光栅摄谱仪焦距与温度之间的关系的经验公式及工作曲线。并通过生产实践进行了验证与考核。这样就可以根据经验公式或工作曲线选择与各种温度对应的焦距(7-35℃)来补偿温度对仪器的影
General spectroscopy equipment are affected by temperature, grating spectrograph especially affected by temperature. Therefore, some people think that the grating spectrograph is not as stable and reliable prism spectrometer. Years of practice proved so. To ensure that the instrument can work normally all year round, the influence of temperature on the instrument must be overcome. There are two ways to achieve this goal: one is to keep the external temperature of the instrument at work; the other is to change the internal working conditions of the instrument so that the instrument can adapt to the change of the external temperature. At present, our country basically adopts the former, that is, with a variety of constant temperature equipment and devices, so high cost, energy consumption. We use the latter, adjust the instrument focal length to adapt to temperature changes. After two years of trial and error exploration and discussion, based on the accumulated data, the empirical formula and working curve of the relationship between focal length and temperature of planar grating spectrometer are summarized. And verified through the production practice and assessment. This can be based on empirical formula or working curve to choose the temperature corresponding to the focal length (7-35 ℃) to compensate for the temperature of the instrument