The SDS3962 is a liquid particle counter based on the light-blocking (light-shielding) principle. It accurately measures particles from 1 to 600 μm across eight channels. It incorporates commonly used pollution level standards and can simultaneously measure particle number concentration and pollution level. Featuring a 5-inch large screen display, it supports touchscreen and button operation, and offers various wired and wireless interfaces. Data can be transmitted in real-time to various smart terminals via a standard RS485 interface and Modbus-RTU protocol, reducing human intervention and enabling online intelligent monitoring and early warning. The precise measurement of particle size and quantity distribution in the liquid provides data support for predictive maintenance of the equipment.
The SDS3962 portable liquid particle counter is designed based on GB/T29024 (ISO21501) Particle Size Analysis – Optical Measurement Methods for Single Particles – Part 3: Liquid Particle Counter – Photoobscuration Method. It features an industrial-grade light source, a meticulously calibrated optical flow cell and pressure-resistant structure, high-precision flow control, and combines NovoFang’s latest generation of particulate signal processing technology and high-precision particle recognition algorithms. It offers accurate and stable particle counting and is suitable for some high-temperature and high-pressure environments, meeting the high-precision measurement needs of users in various application scenarios.
Working Principle: The single-particle photoresist method is used for measurement. Through precise optical design and flow cell structure, particles in the liquid are sequentially passed through the light beam at a constant flow rate. As the particles pass, some of the light is blocked, which causes the photodetector at the other end to sense the change in light intensity. The amount of blocked light is proportional to the particle size. After identifying the changes and frequency of the signal as the particles pass through the detection area, the particle size and number of each particle can be obtained through a calibration procedure.
• Accurate Data: Utilizes the single-particle photoresist principle, an industrial-grade laser light source, precision optical glass lenses, and a flow cell structure, resulting in high counting efficiency, strong particle size resolution, and excellent repeatability and consistency.
• Particle Size Range: Wide detection range of 1~600μm, eight particle size channels covering major application scenarios.
• Stable Flow Rate: Factory default flow rate of 20ml/min, adjustable from 10~80ml/min.
• Fast Response: Second-level data updates, continuous automatic online monitoring, and arbitrarily settable detection intervals.
• Data Display:Supports both real-time and cumulative counting modes, with unit switching.
• Built-in Standards: Contains multiple commonly used standards such as ISO4406, NAS1638, SAE4095, GJB420A, GJB420B, ГOCT17216, and GB/T14039, simultaneously displaying particle count and contamination level.
• Data Calibration:Includes two built-in calibration curves, automatically switching and calibrating according to built-in standards.
• Data Calibration:Simple Operation: 5-inch large screen display, supports touchscreen or button operation.
• Communication Interface: Standard RS485 communication, optional network port, 4G, WiFi, LoRa communication.
• Circuit Safety: ESD, overvoltage, overcurrent, and reverse connection protection ensure circuit stability and reliability.
The SDS3962 liquid particle counter can be widely used in aerospace, power, petroleum, chemical, transportation, port, metallurgy, machinery, automotive manufacturing, water treatment, and other fields. It is suitable for online monitoring of particles in various liquids such as hydraulic oil, lubricating oil, tap water, and industrial water. It can also be used for detecting insoluble particles in organic liquids and polymer solutions.
Number of channels: 8: 1μm, 2μm, 5μm, 10μm, 15μm, 25μm, 50μm, 100μm
Particle size range: 1~600μm
Detection speed: 10~80ml/min (default 20ml/min)
Overlap error: 40000 particles/ml
Display: Contamination level + particle count
Measurement error: Better than 10% (±0.1 contamination levels)
Counting efficiency: (100+20)%, compliant with ISO21501-3 and GB/T29024-3
Pressure range: < 0.6MPa Optional pressure reducing valve up to 42MPa
Power: Standby 6W, Operating 11W
Sample temperature: 0~80℃
Operating temperature: -20~60℃
Screen: 5-inch color LCD screen, touchscreen or button operation
Communication interface: RS485
Communication protocol: Modbus-RTU
Power supply interface: DC12V [9~28VDC], power supply not less than 12V 4A
Dimensions: 300*172.7*103mm
Reference standards: GB/T29024-3, GB/T18854, ISO4402
