What does the air compressor cleanliness level 4 mean?

When discussing the cleanliness level of air compressors, it is first necessary to make it clear that the standard cleanliness level division usually does not directly include the specific level of "4", especially in the cleanliness standard for air compressors or compressed air systems. Common cleanliness levels are based on factors such as the number and size of particles contained in the air and the possible oil content.

General Classification of Cleanliness Grades

1. ISO Cleanliness Standard:
   • ISO compressed air cleanliness rating is usually divided into 0-5 levels, which is based on the number of particles per cubic meter of air and particle size to determine. Among them, level 0 is the highest cleanliness, which means that the air hardly contains any particles and oil.
   • Class 1 cleanliness is often referred to as "technically oil-free", meaning that the oil content achieved by filtration is very low (e. g. 0.01 mg/m & sup3;), but not completely oil-free.
2. Other industry or internal standards:
   • in addition to ISO standards, some industries or enterprises may have developed more detailed or specific cleanliness levels according to their own needs. However, these standards may not be widely universal.

Discussion on "Class 4" Cleanliness

• possible misunderstanding.: In the standard cleanliness level classification, there is no direct "4" cleanliness level. This may be a misunderstanding or a custom level for a particular environment.
• Application-specific or internal standards: In some specific industries or enterprises, there may be situations where cleanliness is divided into more levels, which may include "level 4". However, this division is generally not universal and requires reference to specific application scenarios and requirements.

Conclusion

therefore, when it is mentioned that the cleanliness level of the air compressor is "level 4", it may need to be interpreted according to specific application scenarios, industry standards or internal regulations of the enterprise. If this is a custom level based on a specific standard or requirement, then you need to understand the specific definitions and requirements of that standard. In general, it is recommended to refer to the general ISO cleanliness standard or other widely recognized industry standards to evaluate the cleanliness level of the air compressor.

Precautions

• when choosing an air compressor, the appropriate cleanliness standard should be determined according to the specific application requirements and scenarios.
• Regular maintenance and replacement of the filter is an important measure to maintain the cleanliness of the air compressor.
• For industries with special cleanliness requirements (such as medical treatment, food processing, etc.), air compressors that meet relevant standards should be selected and used and maintained in strict accordance with operating procedures.