Compressed air quality and purity instruments are crucial equipment for ensuring the quality of compressed air. They cover a variety of detection devices that use high - precision sensors and advanced detection technologies to accurately measure key indicators in compressed air such as oil vapor, moisture, particulate matter, and gas purity. The outer shell materials are diverse, and special materials such as corrosion - resistant and explosion - proof ones are selected according to the operating environment to ensure stable operation in harsh industrial environments. Their advantage lies in their ability to continuously monitor various indicators in real - time, promptly detect quality problems, and have data recording and analysis functions to generate test reports and trend analyses, providing a solid basis for users to optimize compressed air systems. They are widely used in industries such as industrial manufacturing, food processing, and pharmaceutical production.