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Air compressor degreasing unit

2026-04-15Views:

The unit of oil removal from air compressors is usually "ppm" (parts per million) or "mg/m & sup3;" (mg per cubic meter), Used to measure the residual oil content in compressed air. Here are the specific instructions:


1. PPM (parts per million)

  • definition: PPM represents the number of parts by mass of oil per million parts of air. For example, 3 PPM means 3 parts of oil per million parts of air.
  • Application PPM is an important indicator to measure the effect of air purification, especially in industries with high air quality requirements (such as food, medicine, electronics, etc.).
  • Conversion:
    • 1 PPM & asynp; 1.2 mg/m & sup3;(at standard atmospheric pressure, 20 ℃, 65% relative humidity).
    • For example, if the air compressor exhaust oil content of 5 PPM, each cubic meter of air contains about 6 mg of oil.

2. mg/m & sup3;(mg/m3)

  • definition: mg/m & sup3; Indicates the mass of oil contained in each cubic meter of air (mg).
  • Application: This unit directly reflects the concentration of oil in the air and is suitable for occasions where precise control of oil content is required.
  • Conversion:
    • if the displacement of the air compressor is 10 m & sup3;/min and the oil content is 3 PPM, the mass of oil discharged per hour is:

3PPM×1.2mg/m³×10m³/min×60min=2160mg/h=2.16g/h

3. Other relevant units

  • L/min (l/min) or m & sup3;/h (m3/h): Used to represent the exhaust flow of the air compressor.
  • %(Percentage): Sometimes used to indicate oil removal efficiency, for example, "oil removal efficiency 99%" means that 99% of oil is removed.

4. Selection of oil removal unit

  • PPM: Suitable for industries that require high-precision control, such as semiconductor manufacturing, pharmaceuticals, etc.
  • mg/m³ suitable for occasions that need to directly reflect the oil concentration, such as environmental monitoring, industrial emission standards, etc.
  • Select Recommendations: Select the appropriate unit according to specific industry standards and equipment requirements. For example, PPM is commonly used in the ISO 8573 standard to indicate an air quality rating.

5. Factors affecting the unit of oil removal.

  • Air compressor type: Screw type, piston type and other different types of air compressor oil removal effect difference is bigger.
  • Post-processing equipment such as cold dryer, filter, adsorption dryer, etc. have a significant impact on the effect of oil removal.
  • Operating conditions operating parameters such as temperature, humidity and pressure will affect the volatilization and residue of oil.

6. Practical Application Example

  • food Industry air oil content is required to be ≤ 0.01 PPM to avoid oil contamination of food.
  • Electronic industry: The air oil content is required to be ≤ 0.1 PPM to prevent oil from affecting the performance of electronic components.
  • general industry air oil content ≤ 3 PPM is usually required to meet most process requirements.

7. Detection method of oil removal unit

  • online detection: Use the oil sensor to monitor the oil content in the air in real time.
  • off-line detection: Determination of the concentration of oil in the air by sampling analysis (e. g. gas chromatography).

Summary

the unit selection of the oil removal amount of the air compressor should be determined according to the specific application scenario and industry standards. PPM and mg/m & sup3; are the most commonly used units and are suitable for high-precision control and direct concentration representation, respectively. Reasonable selection of oil removal volume and detection methods will help ensure that air quality meets production needs.

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