Know the type selection of dustproof test equipment
The tightness should be good.
The cross-sectional area of ​​the working space should be greater than 2 times the cross-sectional area of ​​the test sample, and the effective volume should be greater than 3.3 times the test sample volume.
The test chamber should be equipped with instruments and other auxiliary devices that can monitor and control the sand and dust concentration, wind speed, temperature and relative humidity.
The dust-laden air is allowed to flow approximately laminar before acting on the test sample.
There should be a sand separator to allow the fan to circulate the air repeatedly without sand.
Dust test equipment-sand and dust may cause one or more of the following harmful effects:
After conducting conditional tests in accordance with relevant specifications, check for harmful effects.
The impacts c) and d) are assessed by assuming that sand and dust are electrically conductive, that the ion conducts electricity after being wet, or that it is chemically corrosive. In order to increase the reliability of the interpretation, a humidity test or a corrosion test can be carried out after the sand and dust test.
Moving parts are stuck, rubbing moving parts, jeopardizing electrical insulation, deteriorating electrical performance, blocking air filters, reducing thermal conductivity, causing overheating or fire, interfering with optical performance, and corroding surfaces.
This sponge is designed for dishes washing and cleaning. It is useful for all kinds dishware and kitchenware. Our sponge is useful for removing the stubborn stains. It not only not damage your skin, but also kind to your hands. Choose our factory's production and have great result. We will provide high quality sponge and compitition price for you.
Dish Washing Sponge,Exfoliating Cleaning Pad,Magic Washing Sponge,Dishes Washing Sponge
FengRun Commodity Co.,Ltd. , https://www.sponges.nl