Color separator using the long-term stability of the separator is very important 6 color color separator performance stability, directly affect the production and the effectiveness of the user. Many color separator can also just debug out effect, use after a period of time performance is dropped substantially, even don't have much effect, require constant maintenance and debugging. This mostly due to the color of separator light source, background of imaging system and optical system stability is not high, especially the simple optical system of the device. Color separator application environment of the dust and dirt is more, vibration and interference is bigger also, the change of temperature and rice, wheat qualitative different will affect the machine working condition of color, cause no signal or control the time delay of high-pressure air valve open time, and thus affect the accuracy of the impurity blowing action. To improve the stability of the equipment, in addition to use the light source of high stability and high quality imaging lens, and the corresponding control technology is used to compensate the effects of environmental changes on color separator, and automatically adapt to different stocks and impurity, keep color separator can always in the best working state. To sum up, when choosing color separator, mainly focus on the color separator technology advanced, the performance of the reliability of the equipment quality and use of long-term stability, should be comprehensive consulting, widely. Because color separator is high-tech product, much more expensive than the ordinary food processing equipment, therefore, is a tricky when choosing color separator, do to the product of different manufacturer basic understanding, choose to the satisfaction of the product, make it play a proper investment benefit.