Wind turbines are mostly installed in remote and open areas. Wind turbines are mostly installed in remote, open, and windy areas such as Xinjiang, Inner Mongolia, and coastal areas. The components that need lubrication are mainly the gearbox, engine bearings and main bearings, bearings and gears of the yaw system and pitch system, and hydraulic brake system. The main oil products used are gear oil, hydraulic oil, and lubricating grease. The main inspection items include kinematic viscosity, water content, total acid value (TAN), oxidation degree, elemental analysis, pollution analysis, abrasive particles (ferrographic analysis), and ferromagnetic particle content.

Carrying out equipment condition maintenance based on oil monitoring can effectively improve equipment reliability, reduce equipment accidents and shutdowns, improve equipment integrity, and create huge economic benefits for enterprises in reducing equipment usage costs, energy consumption, and improving equipment production efficiency. Lubricants mainly include hydraulic oil, gear oil, and lubricating grease. The main testing items include viscosity, acid value, moisture, elemental analysis, ferromagnetic particle analysis, abrasive particle (ferrography analysis), kinematic viscosity, etc.

Hydraulic equipment in the metallurgical industry is very important. If abnormal shutdown is caused by oil or equipment wear, the losses will be very significant. Through oil monitoring, quantitative and qualitative analysis of the oil and wear metal particles in the oil can be carried out, and the root cause of lubrication wear faults can be found by changing the oil according to the situation, avoiding further deterioration of accidents and ensuring the safe operation of equipment. The main oil used in hydraulic equipment is hydraulic oil, and the main testing items are selected based on the standards for new oil and in use oil.

As a type of rail transit, the importance of subway transportation is self-evident, and it is developing towards high traffic density, small headway, and large passenger capacity. Therefore, the requirements for vehicle safety and reliability are very high. Once a vehicle malfunctions during normal operation, it can cause minor delays in the train, passenger clearance, rescue operations, and more. In severe cases, the train may overturn and the entire line may be paralyzed. This not only damages economic benefits but also has a significant social impact. Therefore, daily preventive lubrication and maintenance are particularly important for subway vehicles.

At present, thermal power generation is the main source of electricity in China. Thermal power plants have a large amount of capital investment and high precision of equipment. The safety and economy of operation are directly related to the national economy and people's livelihood. In the actual operation process, once the unit equipment fails, it often causes huge economic losses. For such a special industry, safe operation and maintenance of equipment are crucial. Based on the above reasons, monitoring the use of oil in equipment to achieve equipment status monitoring and scientific management of equipment lubrication status is necessary for early detection of equipment hazards, reducing equipment operation risks and costs.