In the laser particle size analyzer, the focus of the laser beam (usually referred to as the spot) should be transmitted through the center of the detector, so that the detector can only receive the scattered light of the measured particles, ensuring accurate and reliable measurement results. In order to increase the upper measurement limit (large particle size) of the instrument, the small angle detector is close to the center of the detector. The change of the light spot causes the signal of the detector to change. In severe cases, the main beam is irradiated to the edge of the center hole of the detector, which affects the instrument. normal work. In order to ensure long-term stable operation of the instrument, the current alignment system of the instrument manufacturer usually adopts two methods. 1: The mechanical structure such as optics and detectors is fixed, and the stability of the laser beam center is ensured by the stability of the system. It is also the method adopted by most laser particle size analyzer manufacturers (including foreign companies). 2: The center of the detector is adjusted at any time by the automatic centering system. This method has its advantages in a system where the laser spot often changes, but this method also has the following disadvantages: the center position of the light receiving point, the detector There are limits on the number and position, there is a dead zone in the detection position, and there is a static difference in the automatic adjustment system, so additional errors are generated. There are advantages and disadvantages in each of the two methods. For the design of a reasonable and rigid structure, there is no need to use automatic alignment.
The laser particle size analyzer produced by Chengdu Jingxin Company is fully considered in designing the structure of the detector, the structure of the optical system, the mechanical strength, the rigidity and the anti-vibration performance. It adopts unique light, machine and electric integration, and has automatic circuit adjustment and correction function. The structure is sturdy and durable, the user does not need to make any adjustment, and the maintenance is simple and convenient. Through more than 20 years of practice, it can prove that the system can work stably and reliably for a long time, and the repeatability and stability of the instrument test are very good.
Salon Use Professional Hair Color Cream delivers gorgeous, high-quality color for multi-tonal and natural-looking results. Works on different hair types and textures. Professional Hair Color cream is a cream-based formula and does not damage your hair-it has been shown to actually improve the condition of your hair according to an independent clinical study.
Professional Hair Color Cream
DELIN HAIR COSMETICS , http://www.hairstylingwaxfactory.com