Standard for water content of compressed air

The water content standards for compressed air vary depending on the application and industry. Here are some specific water content criteria:

medical compressed air:

water content shall be ≤ 1.07 g/m & sup3;. This standard ensures the quality of medical compressed air to meet the needs of medical equipment and patients.

Industrial compressed air:

in general, the standard water content of industrial compressed air should be less than 100ppm (parts per million).

The moisture content in compressed air is usually expressed in terms of dew point temperature, and the standard commonly used in industry is -40°C to -70°C. Within this range, it can be ensured that the moisture content in the compressed air is relatively low and will not adversely affect industrial equipment and processes.

Industry-specific standards:

pharmaceutical industry: water content standard is dew point -40 ℃.

Medical oxygen industry: water content standard is 67ppm.

Pure nitrogen industry: water content standard is 300ppm.

There are also some industries where the standard dew point for water content is -20°C.

National Standards:

according to "Inspection and Evaluation Standard for Water Content of Automobile Air Compressor and Compressed Air" (GB 23275-2009), the maximum water content in scroll compressed air is 4 g/m & sup3;, while the maximum water content in oil-cooled compressed air is 6 g/m & sup3;.

In order to ensure the quality of compressed air, in addition to controlling the moisture content, other parameters need to be considered, such as oil content and solid particle content. In practical applications, these parameters should be considered comprehensively, and corresponding control and monitoring measures should be taken to ensure that the compressed air meets the requirements of specific applications.

Note that these standards may vary by region, industry, and application. When selecting and using compressed air, it is recommended to refer to relevant industry standards or consult a professional to ensure that specific needs are met.