2026-04-10Views：
Compressed air quality standards mainly include the following aspects:
humidity: Compressed air is usually required to have a humidity of less than 50%. Excessive humidity may cause equipment corrosion or affect other process requirements.
Oil content: In ordinary air compressors, the liquid oil content in the compressed air shall not exceed 5 mg/m & sup3;, and the oil vapor content shall not exceed 0.5 mg/m & sup3;. For more sensitive applications, such as the food, pharmaceutical or electronic industries, the oil content requirements are more stringent, usually requiring the oil content in the compressed air to be less than a specific parts per million (ppm) level, and some even to achieve oil-free standards.
Particle content: solid particles in compressed air should be below a certain size, usually 5 μm. Particulate matter can cause wear or blockage of equipment and processes.
Odor and taste: Compressed air should not contain malodors or odors, which usually indicates that the air quality is good and has not been polluted.
Pressure: The working pressure standard of compressed air varies from application to application. For example, general industrial applications require a working pressure of between 0.7 and 1.0MPa, while automobile tire inflation is usually between 2 and 4MPa.
Temperature: The temperature of compressed air at work usually does not exceed a certain range to ensure the normal operation of the equipment. The common temperature range is -20°C to 40°C, but industrial applications with special requirements may require higher or lower temperature ranges.
In addition, according to the ISO8573-1:2010 standard, the purity level of compressed air is divided into four levels, which stipulate the maximum content of particulate matter, moisture and oil. High-purity compressed air is suitable for sensitive applications, such as semiconductor manufacturing, while low-purity compressed air is suitable for some simpler production areas.
In general, the compressed air quality standard is a standard that combines multiple parameters and considerations to ensure the performance and safety of compressed air in various industrial applications.
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