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Talk to the dynamic dust test chamber grade and dust concentration

to be portable, outdoor and automotive electronics are dust test requirements are formulated in the corresponding test requirements on whether IEC, MIL or ETSI and SAE. So Xiaobian to talk with you dynamic Shachenshiyanxiang level with sand and dust concentration:

Shachenshiyanxiang the class is divided into:

1, completely free of dust protection

2, can be protected from foreign matters larger than the inner diameter of 50mm fallen into the apparatus

3, protection against foreign objects larger than the diameter of 12.5㎜ fallen into the apparatus

4, can be protected from foreign matter of diameter greater than 2.5 mm fallen into the apparatus ]

5, can be protected from foreign matters larger than the inner diameter of the objects fall 1.00㎜

6, can not completely prevent dust from entering, but the amount of dust entering must not affect the normal operation of the device, shall not affect the safety

7 , completely dust

Shachenshiyanxiang of the sand and dust concentration ]
1. dust: Unless otherwise specified, blowing dust holding test concentration 10gm3 plusmn; 7gm3.

2, the blow: Unless otherwise specified, the concentration of sand held as follows:

2.1 for might be flying over the road unpaved working near the helicopter's equipment: 2.2gm3 plusmn; 0.5gm3

2.2 is never used in the vicinity of the aircraft is flying or exposure, but may be working near unprotected at the start of a ground vehicle or storage
equipment: 1.1gm3 plusmn; 0.3gm3.

These are all the contents of the grade and dust concentration of the dust test chamber.

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