Online oil cleanliness tester enables real-time monitoring of oil contamination in industrial equipment

Online oil cleanliness tester employs the optical obscuration counting principle and a high-precision laser sensor to measure the size and quantity distribution of particles in oil in real time. The detection range covers 1–100 μm or 4–70 μm, and it incorporates ISO4406 and NAS1638 contamination level standards. It supports various oil types, including hydraulic oil, lubricating oil, and transformer oil, and is widely used in predictive maintenance of equipment in aviation, power, chemical, and metallurgical industries.

Online oil cleanliness tester is a sensor specifically designed to monitor the size, quantity distribution, and corresponding contamination level of particles in a tested oil sample. Its core detection principle utilizes the optical obscuration counting method specified by the International Hydraulic Standards Committee. The instrument uses a high-precision laser sensor. As the oil flows through the detection chamber, suspended particles block the laser beam. By measuring the light intensity attenuation signal, the number of particles of different sizes can be calculated, thus determining the degree of oil contamination.

In terms of detection performance, Online oil cleanliness tester boasts advantages such as fast detection speed, strong anti-interference capability, high accuracy, and good repeatability, and can operate stably under harsh conditions such as high temperature and high pressure. The detection particle size range covers 1–100 μm or 4–70 μm, and supports simultaneous counting of multiple measurement channels including 1 μm, 2 μm, 5 μm, 10 μm, 15 μm, 25 μm, 50 μm, and 100 μm. The instrument incorporates multiple particulate contamination level standards such as ISO4406, NAS1638, SAE4059, GJB420A, GJB420B, and GB/T14039, and can simultaneously output contamination level results under multiple standards, meeting the judgment needs of different industries and users with a single test.

Online oil cleanliness tester can be directly installed on equipment such as hydraulic transmission systems, lubrication systems, oil filters, cleaning machines, and testing benches to achieve real-time online monitoring of system oil contamination levels. The equipment features a modular design, allowing for individual sensor replacement and reducing maintenance complexity. Test results can be directly read on the instrument's color LCD screen or transmitted to a host computer, PLC, or cloud platform for remote monitoring via RS232, RS485, or USB interfaces. Some models also include built-in moisture and temperature sensor modules, simultaneously outputting three parameters: contamination level, water content, and oil temperature.

Online oil cleanliness tester is suitable for detecting various light-transmitting solvents such as engine oil, gear oil, transformer oil, hydraulic oil, lubricating oil, synthetic oil, and water-based solvents. It is widely used in aerospace, power plants, petrochemicals, transportation and ports, steel metallurgy, and automobile manufacturing. By monitoring oil contamination in real time, maintenance personnel can intervene in the early stages of equipment failure, preventing mechanical wear and system downtime caused by oil contamination. This enables predictive maintenance, reduces maintenance costs, and extends equipment lifespan.