Technical specifications of sand and dust test chamber: 1. Nominal wire diameter of metal screen: 50μm 2. Nominal spacing between lines: 75μm 3. Airflow speed: ≤2ms 4. Amount of sand dust: 2 ～ 4kgm3 5. Dust preheating: adopt pipe-wrap mica sheet heating 6. There is a dust replacement device at the bottom of the sand and dust test box 7. Power supply voltage: AC380V50HZ three-phase five-wire system 8. Adopt imported controller to control dust blower, dust vibration and total test time respectively Conditions for the installation site of the sand and dust test box: for the installation site of the sand and dust test box-maintenance and troubleshooting, the contents summarized in the manual are for reference and learning only. In order to facilitate the heat dissipation and maintenance of the box, the place where the equipment is installed Meet the relevant conditions. Ningbo Vinny International Trading Co., Ltd , http://www.vinnystationery.com