The oil content of compressed air depends on industry demand and equipment configuration, usually through ISO 8573-1 grading, the following is the key information:
1. oil content grade standard
| Grade | oil content (mg/m & sup3;) | applicable Scenarios |
|---|
| level 1 | ≤ 0.01 | medical, Pharmaceutical, Semiconductor |
| level 2 | ≤ 0.1 | food, precision instruments |
| level 3 | ≤ 1.0 | spraying, chemical |
| level 4 | ≤ 5.0 | general industry |
| level 5-9 | >> 5.0 | scenarios with low air quality requirements |
2. industry differences
- medical/Pharmaceutical: Level 1 or oil-free air compressor is required to ensure the compressed air is sterile.
- Food Processing2-3 levels are usually required to avoid oil pollution.
- General manufacturing: 4-5 levels can meet the needs of pneumatic tools.
3. detection method
- online monitoring:
- use oil sensor real-time detection, accuracy up to 0.01 mg/m & sup3;.
- Laboratory Analysis:
- pass after sampling infrared spectroscopy or gravimetric method the test results are more accurate.
4. Measures to Control Oil Content
- equipment selection: Oil-free air compressor is preferred for high-demand scenarios.
- Maintenance Critical:
- oil air compressor needs to be replaced regularly oil-water separator filter element(usually every 2000 hours).
- Keep the air compressor environment clean and prevent dust from accelerating the blockage of the filter element.
Summary: The oil content of compressed air ranges from <0.01 mg/m & sup3;(medical grade) to> 5 mg/m & sup3;(general industrial). Users need to select equipment according to industry standards and maintain it regularly to control oil content and avoid production pollution or equipment failure.
