The SDS3961 is a liquid particle counter based on the light-blocking (light-shielding) method. It can accurately measure eight industry-standard particle sizes: 1μm, 2μm, 5μm, 10μm, 15μm, 25μm, 50μm, and 100μm . Through a standard RS485 interface and Modbus-RTU protocol, it transmits data in real time to various smart terminals, 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 SDS3961 Oneline liquid particle counter is designed based on the GB/T29024 (ISO21501) standard for optical measurement methods of single particles in particle size analysis, Part 3: liquid particle counter using the photoresist method. It features an industrial-grade light source, a carefully calibrated optical flow cell, and a pressure-resistant structure. Combined with Nova latest generation of particulate signal proce
● Accurate data: Based on the single-particle photoresist method , using an industrial-grade laser light source. High counting efficiency and good repeatability.
● Particle size range: 1~ 600μm , eight particle size channels , covering major application scenarios .
● Fast response: Data updates in seconds, with customizable sampling time.
● Built-in standards: Includes multiple commonly used standards such as ISO4406, NAS1638, SAE4095, GJB420A, GJB420B, ГOCT17216, GB/T14039, and can simultaneously display particle count and contamination level.
● Data calibration: Three built-in calibration curves can be automatically switched and calibrated according to the built-in standards.
● High reliability: IP65 protection rating, resistant to high temperature and high pressure.
● Easy to operate: 3.5-inch LCD screen, supports touch screen or button operation.
● Circuit safety: ESD, overvoltage, overcurrent, and reverse connection protection ensure circuit stability and reliability.
● Communication interface: Standard RS485 output, standard Modbus-RTU protocol .
● Easy to install: The installation structure is simple and highly versatile.
● Safe and friendly: low-voltage power supply, no electric shock; no radiation source, no light pollution.
● Detection speed : 10~80ml/min, factory default is 20ml/min, other flow rates can be inquired separately .
Nova SDS3961 oneline liquid particle counter can be widely used in aerospace, power, petroleum, chemical, transportation, port, metallurgy, machinery, and automobile manufacturing industries . It can also be used to detect insoluble particles in organic liquids and polymer solutions.
| NO. | project | parameter | Remark |
| 1 | Number of channels | 8 pieces:1μm,2μm,5μm,10μm,15μm,25μm,50μm,100μm | Customizable |
| 2 | Particle size range | 1~600μm | Customizable |
| 3 | show | Pollution level +particle count | |
| 4 | Measurement error | Better than 10%(±0.1 pollution levels) | |
| 5 | Counting efficiency | (100+20)%,conforming to ISO21501-3 and GB/T29024-3 | |
| 6 | Pressure range | <4MPa Optional pressure reducing valve up to 42MPa | Complies with GB/T150.4 |
| 7 | Detection speed | 10~80ml/min(default 20ml/min) | |
| 8 | Sample temperature | 0~80℃ | |
| 9 | Operating temperature | -20~60℃ | |
| 10 | Screen | 3.5-inch color LCD screen,touchscreen or button operation | |
| 11 | Communication interface | RS485 | Customizable |
| 12 | Communication Protocol | Modbus-RTU | |
| 13 | Power supply interface | 15000mAh/16.8V | |
| 14 | Protection level | IP65 | |
| 15 | size | 164*124*102.5 mm | |
| 16 | Reference Standard | GB/T29024-3、GB/T18854、ISO4402 |
