The French HGH infrared system stock company launch of the float glass temperature monitoring system FLOATSCAN 21 infrared linear scanner can be real-time control and measuring the whole glass heat distribution. Compared with the traditional point temperature way, linear scanning technology using is a big improvement, because it for a moving body scanning each line can be as high as 1250 points, thus can accurately display the thermal energy of the object image. In addition, the system also can automatically control the heating and cooling device, modification temperature difference. The system can from stress and hardness to improve the vitreous quantity, yield and reduce defective goods.