The oil content of compressed air is ≤ 0.01 mg/m & sup3; it does not belong to micro oil, but belongs to the 0 (Class 0) standard in the international standard ISO 8573-1, which is usually regarded as equivalent to the oil content level of oil-free compressed air. The following is a detailed explanation of this conclusion:
classification of oil content in 1. with the international standard ISO 8573-1
according to the international standard ISO 8573-1 "Compressed Air Part 1: Contaminants and Purity Levels", the oil content of compressed air is divided into several levels, of which:
- level 0 (Class 0): oil content ≤ 0.01 mg/m & sup3;. This is the highest grade and requires a very low oil content, which is usually considered equivalent to the oil content grade of oil-free compressed air.
- Class 1: oil content ≤ 0.1 mg/m & sup3;.
- Class 2: Oil content ≤ 1 mg/m & sup3;.
- Level 3 (Class 3) oil content ≤ 5 mg/m & sup3;.
- Class 4 (Class 4) oil content> 5 mg/m & sup3;.
Meaning of 2. oil content ≤ 0.01 mg/m & sup3;
- technical oil-free although the oil content ≤ 0.01 mg/m & sup3; compressed air still contains a very small amount of oil technically, its oil content is already very low, which can meet most application scenarios with extremely high requirements for compressed air quality.
- The difference with micro oil: Micro-oil usually refers to a certain amount of oil in compressed air, but the oil content is relatively low. However, in the ISO 8573-1 standard, there is no clear definition of "micro oil. In contrast, the oil content ≤ 0.01 mg/m & sup3; compressed air has reached the 0 level standard, which is the highest level of compressed air oil content.
3. application scenarios and requirements
- industry with high quality requirements for compressed air: Such as food, pharmaceuticals, electronics, etc., usually requires the oil content of compressed air to reach level 0 or level 1 standards.
- General Industrial Applications: The oil content of compressed air may be low, such as level 2 or level 3 standards to meet the demand.
