SDS3909 2.83L-0.1μm online particle counter, based on the single-particle laser scattering principle, accurately measures eight common particle sizes, including 0.1μm, 0.15μm, 0.2μm, 0.25μm, 0.3μm, 0.5μm, 1.0μm, and 5.0μm. Data is transmitted in real time to various smart terminals via a standard RS485 interface and Modbus protocol, reducing human intervention and enabling unmanned intelligent monitoring. The 0.1μm online particle counter enables continuous, real-time monitoring 24/7 in a variety of dust-free environments, reducing risks and lowering costs.
As a new generation of ultrafine particle counter, the SDS3909 2.83L-0.1μm online dust particle counter has benefited from the rapid development of semiconductor industry technology in recent years. The latest generation of products have been applied to key components such as light sources, detectors, and core processors. The 0.1μm online dust particle counter uses a high-power wide-temperature semiconductor laser, a single-

● Accurate data: single particle laser scattering principle, industrial-grade laser light source. High counting efficiency, good repeatability and consistency.
● Particle size range: Particle size range is 0.1~5 μm , ensuring counting efficiency while a single sensor covers eight channels.
● High reliability: Aerodynamically corrected optical and gas path self-checking, insensitive to vibration, ensuring system reliability and stability.
● Stable flow: It adopts active sampling method and is equipped with PID flow control function, which can support stable, long-term, high negative pressure and sampling; optional air pump version with external high-performance air pump module.
● Fast response: data is updated within seconds.
● Communication interface: RS485 and Ethernet output as standard ; Lora , WiFi, 4G communication as optional .
● Fully automatic measurement: remote control, wireless transmission, and real-time data upload to the IoT platform.
● Sound and light alarm: Sound and light alarm function is standard, and the alarm value can be set.
● Circuit safety: With ESD, overvoltage, overcurrent, and reverse connection protection, it ensures the stability and reliability of the circuit.
● Easy installation: simple installation structure and high versatility.
● Safe and friendly: low voltage power supply, no electric shock; no radiation source, no light pollution.
● Sampling flow rate: standard 2.83L/min, two sampling modes: air pump/fan are optional.
NovaSensor SDS3909 2.83L-0.1μm online particle counter, widely used in online particle counting detection scenarios in clean room environments such as the semiconductor industry, pharmaceutical industry, electronics industry, food processing industry, and fine processing.
| NO. | Project | Parameter | Notes |
| 1 | Internet traffic | 2.83L/min | |
| 2 | Particle size range | 0.1μm、0.15μm、0.2μm、0.25μm、0.3μm、0.5μm、1.0μm、 5.0μm | 8 channels |
| 3 | Protocol | Modbus-RTU/TCP | |
| 4 | Interface | RS485,Ethernet | Customizable |
| 5 | Screen | 5-inch touch screen | |
| 6 | Light source | Long life laser diode | |
| 7 | Maximum concentration | 1,000,000 pcs/ft³ | |
| 8 | Counting efficiency | 50%@0.1μm;100%@Particle size>0.15μm | Conform to ISO 21501-4 |
| 9 | Calibration | ISO 21501-4,GB T29024.4-2017,JF 1190-2008 | |
| 10 | Work environment | Temperature:10~40℃;Humidity:20~95%RH(No condensat ion) | |
| 11 | Storage | Can store no less than 5 million pieces of data | |
| 12 | Power supply | DC12V [9-28VDC],power supply not less than 12V3A | |
| 13 | Power | fan ver:17.5W;pump ver:18.5W | |
| 14 | Size | fan ver/pump ver:220.5*162*131mm | Excluding inlet and outlet sampling heads (fan version has no outlet) |