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751G 型分光光度计是国产有紫外谱区的常用分光光度计之一。这种仪器已经过几代线路改造。第一代是电子管型的,第二代是晶体管加集成块的,第三代是把钨灯稳压源和氢灯稳流源合并,使线路简化的。第一代已经有衰老更换趋势,第二代处干多发病状态,第三代使用年代少,维修问题不多。第二代的氢灯稳流源维修问题更突出些。
751G-type spectrophotometer is one of the commonly used spectrophotometer with UV spectrum. This instrument has been modified several generations of lines. The first generation is of the tube type, the second generation is a transistor plus integrated block, the third generation is the steady flow of tungsten light source and hydrogen lamp merging source, so that the line is simplified. The first generation already has the trend of aging replacement, the second generation at the dry and more morbid state, the third generation of less use, maintenance problems. The second generation of hydrogen lamp steady flow source maintenance problems more prominent.