Dust tests are mainly performed to test functioning of components under extreme environmental conditions. Various standards specify e.g. the test duration and the composition of dust used. The dust is filled in the funnel below the test space. The formation of dust within the test space is effected by compressed air injection through four special nozzles. The dust is blown and swirled in upper test space by intensive air movement.

Dust Test Chambers allow reproducible testing of resistibility of electro-technical products against dust, and the determination of IP protection types by housings of electrical devices and equipment of transport vehicles.

The dust chamber is designed to enclose a test specimen which is then exposed to fan assisted circulating dust partials. The objective is to check the sealing of enclosures for abrasion resistance caused by the circulating dust particles. The use of this chamber is beneficial in the design and development stage of product development as well as interim testing of field failure returned units.

Application

Dust tests are mainly performed to test functioning of components under extreme environmental conditions. Various standards specify e.g. the test duration and the composition of dust used. The standard SAE J 575 is performed with three to five kilogrammes unburnt Portland cement (according to ASTM C 150-77). Portland cement is especially characterised by its fine grain size. This dust is filled in the funnel below the test space. The formation of dust within the test space is effected by compressed air injection through four special nozzles. The dust is blown and swirled in upper test space by intensive air movement.

The pulse time for this action is 2 to 15 seconds with a brake of 15 minutes between the single impulses.

 

Standards

  • SAE J575
  • DIN/VDE 0470 part 1 (EN 60529),
  • IEC 68-2-68, La2 (DIN EN 60068-2-68)