It has multi-function design with waterproof and dustproof.
Ventilated mesh body material difficult combustion-grade ABs resin. Has the anti - ultraviolet summer static electricity special effects. The filter material is made of imported nylon fiber synthetic resin, and the dust removal rate is up to 86% effectively to prevent dust from entering the electric control cabinet.
Ventilator Filter Unit 150, Ventilator Filter Unit 205, Ventilator Filter Unit 256, Ventilator Filter Unit 800 Shenzhen Fu Sheng Electric Co., LTD. , http://www.fushengfan.com
Ensure effective cooling of controller and precision electronic parts. Extended service life. Reduce the failure rate.
The filter should be cleaned regularly. To maintain ventilation filtering effect.
The protection level is IP44.
Several special cases of scraping the plate
The standard plate for inspection has a high degree of flatness. In order to ensure the accuracy requirements, the method of manual scraping is still adopted in China. From a technical point of view, some special cases are often encountered in scraping. First, the large flat plate is used as a benchmark to grind a small flat plate with a large flat plate. The conclusion is that the small flat plate is convex. The qualified small flat plate is placed on the qualified large flat plate to show the result. The result is that the small flat plate is empty in the middle, the periphery is hard, and it is obvious. In theory, the two standard planes should show good mutual research, but the actual situation is not good. . The reason is that: