
As industrial equipment reliability and predictive maintenance requirements continue to rise across global manufacturing, energy and transportation sectors, accurate oil contamination testing has become a non-negotiable part of asset lifecycle management. The LD-YZ10 oil particle counter, our flagship portable oil contamination detector, is engineered to eliminate the pain points of traditional slow, bulky lab-only testing, delivering consistent, audit-ready results both in controlled laboratory environments and harsh on-site operation sites.
Built on the light obscuration (light blockage) counting principle specified by the International Hydraulic Standards Committee, the LD-YZ10 oil particle counter uses a high-stability semiconductor laser light source to ensure low noise, high resolution and long service life for continuous daily testing. The device weighs only 2.5kg with compact dimensions of 275×220×107mm, making it easy for field technicians to carry to remote operation sites, no complex installation required.
Key performance parameters include a 1~500μm particle size detection range, optional 1μm or 4μm(c) sensitivity, and maximum overlapping error of 40000 particles per ml, with counting accuracy within ±10% error margin. The offline detection speed is adjustable between 5~60mL/min with factory default set to 25mL/min, delivering full test results in less than 1 minute for most routine samples. The unit features IP67 high protection grade, supporting work temperatures from -20℃ to 60℃, and can operate reliably even in high-dust, high-humidity industrial field conditions.
The LD-YZ10 oil particle counter is designed to support testing for nearly all common industrial oil types, including transformer insulating oil, hydraulic oil, lubricating oil, synthetic oil, anti-fuel oil, turbine oil and more. Its 316L and PTFE pipeline material construction resists corrosion from organic solvents, ensuring no cross-contamination between different test samples. The standard model supports sample viscosity up to 100cSt, and users can opt for an external positive/negative pressure chamber to enable degassing treatment for bubbly samples and smooth detection for high viscosity fluids.
Beyond particle contamination testing, the LD-YZ10 oil particle counter is pre-built with integrated micro-water sensor and temperature sensor, so users can get simultaneous readings of oil temperature, water activity and water content (1~360ppm range) in a single test run, eliminating the need to use separate dedicated instruments for these extra parameter checks. The test time interval can be set from 1 second up to 24 hours, supporting both one-off spot testing and long-term continuous monitoring for oil circulation systems.
This portable oil particle counter is widely adopted across dozens of high-demand industries to support predictive maintenance and quality control workflows. In aerospace and military manufacturing, testing teams use the LD-YZ10 to verify the cleanliness of hydraulic system components during final assembly, preventing unqualified particle levels from causing mid-flight system failure. In power and petrochemical sectors, field technicians carry the unit to substation sites to test transformer insulating oil on the spot, avoiding the risk of sample contamination during long-distance transport back to central labs.
The LD-YZ10 also fits perfectly for use cases in steel metallurgy, port transportation, automotive manufacturing and general machinery maintenance teams, where technicians need to test the lubricating oil condition of large running equipment on site to schedule filter replacement or oil change services before abnormal wear occurs. All test data generated by the unit meets the requirement of internal quality audits and third-party regulatory inspections.
To eliminate extra configuration work for global users, the LD-YZ10 oil particle counter comes pre-loaded with all mainstream international, national and military standards including ISO4406, NAS1638, SAE4059, GJB420A, GJB420B, GOST17216, GB/T14039 and more. Once a test is finished, the built-in data analysis system will automatically identify and output the contamination grade under all selected standards, no manual calculation required.
The unit supports both manual, semi-automatic and full automatic calibration following ISO4402, ISO11171, GB/T18854 standards, to keep test results accurate for long term use. It has a 4.3-inch clear display, with one-click switch between English and Chinese operation interfaces to fit global user habits. The 1000-group built-in data storage supports expansion via U-disk for easy data backup, and the standard USB interface allows users to connect to external computers, printers or peripheral control systems for further data processing. It also features both volume flushing and duration flushing modes, making daily equipment maintenance fast and simple without special training.
If you are looking for a cost-effective, reliable portable oil particle counter that balances performance, portability and compliance for your lab or on-site testing workflows, the LD-YZ10 model is an ideal choice for your team. Our technical team can provide customized configuration guidance based on your specific sample types and industry testing requirements, contact us for a quote to learn more about full technical specifications and application support services.
Q1: What types of oil samples can the LD-YZ10 oil particle counter process?A1: The LD-YZ10 supports routine testing for transformer insulating oil, hydraulic oil, lubricating oil, synthetic oil and other common industrial oil products, with standard compatibility for sample viscosity up to 100cSt. For higher viscosity samples or samples with high dissolved air content, you can pair the unit with an optional positive/negative pressure chamber to complete degassing and high-viscosity testing smoothly.
Q2: Does the LD-YZ10 oil particle counter meet global industrial testing compliance requirements?A2: Yes, the device is fully developed following the ISO11171 standard, pre-installed with over 7 widely recognized international, regional and national contamination grading standards, and supports calibration per ISO4402, GB/T18854 and other formal calibration standards. All test reports generated by the unit are audit-ready for internal quality control and third-party regulatory inspections.
Q3: Can I export test data from the LD-YZ10 for further processing?A3: Absolutely. The LD-YZ10 oil particle counter provides 1000 sets of built-in data storage space, and supports external U-disk storage to export full test reports. It is also equipped with a standard USB interface that can connect to external computers, printers or other peripheral devices for data analysis, archiving and on-site printing.

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