Shandong Nova Technology Co., Ltd. (Hereinafter referred to as "NovaSensor") launches new additions to its liquid particle counter family—the SDS3961, SDS3962, and SND1500! Based on single-particle laser recognition technology, these products cover diverse application scenarios and are widely applicable in aerospace, power, petrochemical, transportation and port, metallurgical machinery, and automotive manufacturing industries . They are suitable for monitoring homogeneous, transparent solvents such as hydraulic oil, lubricating oil, engine oil, gear oil, gasoline, diesel, and aviation kerosene. They are also suitable for detecting particle distribution and quantity in water in water treatment plants, sewage treatment plants, universities, and research institutions.
All three new liquid particle counters are designed based on the GB/T29024 (ISO21501) international standard, and are equipped with industrial-grade laser light sources and precision optical structures. The measurement error is better than 10%, and the repeatability and stability are both excellent, ensuring the accuracy of the data.



A sneak peek at the key highlights: the upgraded capabilities are self-evident.
Ø Wide-area precision monitoring
It provides a unified coverage of a wide detection range of 1~600μm, is equipped with 8 particle size channels (mainstream specifications such as 1μm, 2μm, and 5μm, and supports customization), and incorporates seven commonly used industry standards such as ISO4406 and NAS1638. It can simultaneously display particle count and contamination level, easily adapting to the monitoring needs of various liquids such as hydraulic oil, lubricating oil, and industrial water.
Ø Intelligent and efficient response
With second-level data updates, the NovaSensor liquid particle counter supports continuous online monitoring and custom sampling intervals. Some models are equipped with real-time/cumulative dual counting modes and unit switching functions, making data acquisition efficient and flexible.
Ø Smart and convenient operation
liquid particle counter features a 3.5-inch touchscreen/button dual operation, while the SDS3962 is equipped with a 5-inch color LCD screen, supporting both touchscreen and button operation. The portable liquid particle counter SND1500 upgrades to an 8-inch large touchscreen design with an intuitive and easy-to-understand interface. It also incorporates two calibration curves, automatically switching between them according to standards, significantly reducing the operational barrier.
Ø Diverse Adaptation Scenarios
The flow rate designs have different focuses: the SDS3962 supports an adjustable flow rate of 10~80ml/min (default 20ml/min); the SND1500 is equipped with a high-precision constant flow sampling system of 10ml/sample to meet the stable monitoring needs in different scenarios; the SND1500 has a built-in 15AH large battery with a battery life of over 8 hours, perfectly suited for portable testing scenarios.
Ø Safety and stability guarantee
liquid particle counters come standard with quadruple circuit protection against ESD, overvoltage, overcurrent, and reverse connection. The SDS3961 achieves an IP65 protection rating, withstanding high temperatures and pressures to ensure stable operation under harsh conditions. Communication interfaces are flexibly expandable, with standard RS485 and Modbus-RTU protocols, and optional Ethernet , 4G, and WiFi connections, easily enabling real-time data transmission and smart terminal integration for online monitoring and early warning.
In addition, the SND1500 portable liquid particle counter adds 5 million historical data storage, USB export, embedded thermal printing, and custom alarm functions to fully meet the needs of data traceability and compliance management; while the SDS3962 online liquid particle counter, with its compact design and flexible flow adjustment, has become a cost-effective choice for industrial online monitoring.
From precise laboratory analysis to industrial field monitoring, from fixed installation to portable testing, NovaSensor liquid particle counter series is always user-oriented. With its import-substituting core technology, it provides reliable data support for predictive maintenance of equipment, safeguarding production safety and product quality.