How to measure the oil content of oil-free air compressor

The measurement methods for oil content in oil-free air compressors mainly include the following:

1. Weight method: This is a method to directly measure the oil content in the exhaust gas. Its oil content is measured by collecting a certain volume of exhaust gas samples and using a weight analyzer and other equipment. This method can provide accurate oil content data, but requires professional equipment and operation.
2. Photometry: Use a photometer to measure the concentration of oil mist in the exhaust gas. When light passes through the exhaust gas containing oil mist, some of the light will be scattered or absorbed by the oil mist. By measuring the intensity of the scattered or absorbed light, the concentration of the oil mist in the exhaust gas can be calculated.
3. Infrared spectroscopy: Use an infrared spectrometer to analyze the oil content in the exhaust gas. Different oil molecules have specific absorption peaks in the infrared spectrum. By measuring the intensity of these absorption peaks, the oil content in the exhaust gas can be determined. This method has high sensitivity and accuracy.
4. Setting method: The gas being detected is filtered through a medium with a lower breathability, and then the excess oil is separated and settled in the glass tube for a certain period of time. By observing the height of the deposits in the glass tube, the oil content in the gas can be measured indirectly.
5. PID oil vapor detection method: This is a method for measuring the vapor content of hydrocarbons through PID (photoic ionization detector). This method mainly measures oil vapor and is suitable for online monitoring of changes in oil content in compressed air.
6. SUTO Hilth S120 Oil Vapor Detector: This device uses photoionization sensor technology to achieve rapid response and online monitoring. The oil vapor measurement range is 0.001 to 5.000 mg/m3, and can be used in portable and fixed occasions.

When choosing a measurement method, it should be considered based on specific needs and actual conditions, such as the accuracy requirements of the inspection, the cost and operability of the equipment, etc. At the same time, to ensure the accuracy and reliability of measurement results, high-precision instruments and equipment should be used and standard inspection procedures and specifications should be followed.

Please note that the methods listed above may not be comprehensive, and as the technology develops, new measurement methods may appear. In practical applications, it is recommended to consult a professional or consult relevant literature to obtain the latest and most suitable measurement methods.