Oil content standard of factory compressed air

The oil content standards for factory compressed air vary by application and industry. These standards are designed to ensure that the quality of compressed air meets the needs of a specific production or process. The following are factory compressed air oil content standards based on different standards and specific applications:

1. General Standard

in China, the national standard stipulates that the liquid oil content in compressed air shall not exceed 5 mg/m & sup3;, and the oil vapor content in compressed air shall not exceed 0.5 mg/m & sup3;. This is the basic general standard for the oil content of compressed air in factories.

2. industry standards

1. pharmaceutical Industry:
   • the Chinese Pharmacopoeia and GMP standards require that the oil content of compressed air is less than or equal to 0.1 mg/m & sup3;. This standard is borrowed from the provisions of the European Pharmacopoeia to ensure air quality during the production of pharmaceutical products.
2. Food Industry:
   • the food industry also has strict requirements on the quality of compressed air. The specific oil content standard may vary according to the production process and product, but it usually requires a lower oil content to avoid contamination of the product.
3. Electronic industry:
   • the electronics industry requires extremely high levels of cleanliness of compressed air, especially in the production of semiconductors and precision electronic components. Therefore, the industry may require CLASS 0 (oil-free) compressed air, that is, oil content less than 0.01 mg/m & sup3;.

3. international standards

the ISO 8573 standard is one of the international standards for measuring the quality of compressed air, in which the oil content is classified in detail:

• CLASS 0 (oil-free grade): oil content less than 0.01 mg/m & sup3;.
• CLASS 1: Oil content not exceeding 0.01 mg/m & sup3;(same as CLASS 0, but may be used in different application scenarios).
• CLASS 2: Oil content not exceeding 0.1 mg/m & sup3;.
• CLASS 3: Oil content not exceeding 1 mg/m & sup3;.

These standards provide a reference for enterprises to choose the quality of compressed air.

4. application-specific standards

in addition to the above-mentioned general, industry and international standards, specific applications may also have their own oil content standards. For example, diving breathing compressed air requires an oil content of <5 mg/m & sup3; in the United States and China, and <1 mg/m & sup3; in the United Kingdom;.

5. Summary

the oil content standard for factory compressed air is a diverse system that takes into account the needs of different industries and specific applications. When selecting and using compressed air, the appropriate oil content standard should be selected according to the specific application scenarios and needs, and the quality of compressed air should meet the relevant standards and regulations. At the same time, regular maintenance and inspection of the compressed air system is also one of the important measures to ensure air quality.