Theme content and application scope of dustproof experiment box:
This standard specifies the test conditions, test procedures, and environmental test marks of the dust test machine.
This standard applies to two optical instruments, instruments equipped with optical components and optical components.
Dust test machine test conditions:
During the exposure, various measures should be applied to the optical surface to prevent the impact of sand and dust. For example, if the dust does not need to be covered with carbon during the exposure of the sample, it should be described in the relevant standards.
The test chamber (chamber) should have a certain space to ensure that the area occupied by the sample is not greater than 50% of the cross-sectional area of ​​the test chamber (chamber) (the area perpendicular to the air flow direction), and the volume does not exceed the effective volume of the test chamber (chamber) 50% -Mineral sand should be composed of particles with sharp edges, and the wire mesh should meet the standard requirements.
Test purpose of dust test machine:
Study the degree of change of the optical, thermal, mechanical, chemical and electrical characteristics of the sample affected by sand and dust, especially the failure or impermissible surfaces of moving parts (such as sliding surfaces, bearings, contactors, control devices, gears) abrasion.
This test is not used to determine the abrasion resistance to coarse sand.
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