Dust particle counter is an instrument used to measure the number and particle size distribution of dust particles per unit volume in clean environments, providing a basis for evaluating air cleanliness. It is widely used in fields such as medical, pharmaceutical, electronics, food processing, precision manufacturing, aerospace, etc. that require strict control of environmental pollution and maintenance of high cleanliness standards. It strictly checks the cleanliness of the space to meet relevant standards and product quality.

Give a few applications to illustrate the necessity and importance of real-time monitoring of dust particles.

Medical: Particle detachment on the surface of implanted devices may cause embolism, which can affect the effectiveness of medical imaging. Particle counters are used to monitor air quality in operating rooms, laboratories, pharmacies, and other medical environments to ensure that particulate matter in the air does not contaminate critical processes such as surgery, experimentation, and drug preparation.

Pharmaceutical: Particle counters are used to monitor and control air quality during drug production, ensuring the purity and quality of drugs, and reducing the risk of pollution to employees and the environment.

Electronic manufacturing: Particles on circuit boards can cause short circuits, and particles can affect the yield of wafer production. Particle counters are used for environmental cleanliness in electronic manufacturing processes, especially in the microelectronics and semiconductor industries, to ensure the performance and reliability of electronic devices.

To ensure safety and quality, these industries need to strictly implement industry cleanliness level standards, such as GMP or IS014644-1. Therefore, a 7 * 24-hour real-time monitoring eye is needed to monitor the purification effect and cleanliness level of various cleanliness levels of workbenches, laboratories, and purification workshops. The online dust particle counter is the guardian who stands guard day and night to ensure the cleanliness of the environment.

Identifying and measuring such tiny and rare particles in a clean room requires both precision and long-term measurement reliability. How does an online dust particle counter ensure measurement accuracy and reliability?

The working principle of the dust particle counter is based on the principle of single particle laser scattering. It uses precise optical design and an air path designed based on fluid mechanics principles to sequentially pass particles in the sampled air through the beam, producing weak scattered light. These scattered lights are collected by precise optical signal collection devices, forming light pulse signals that are projected onto high-sensitivity, high bandwidth photodetectors and converted into electrical pulse signals. The data processing unit analyzes the electrical signal, converts and calibrates it to calculate the size and quantity of particles. The number of electrical pulses corresponds to the number of particles, and the amplitude of the electrical pulses corresponds to the size of the particles.

According to the measurement principle of the particle counter mentioned above, high-performance optoelectronic devices, precise optical and pneumatic design, and intelligent recognition algorithms are key technical means to improve measurement accuracy and reliability.

The SDS039 online dust particle counter uses high-precision and long-life industrial grade components to ensure 7 * 24-hour long-term reliable operation. Strict scientific optical design and gas path design through fluid simulation have improved measurement accuracy, while autonomous particle identification algorithms and long-term dust source learning algorithms have enhanced particle size identification capabilities. Constant current sampling and closed-loop control ensure data stability. The measurement data of SDS039 is compared with the data of TSI9306 in the United States, and the R² ≥ 0.95.

The consistency between the dust particle counter and a well-known brand's data is high

The SDS039 online dust particle counter can measure six commonly used particle sizes in the industry, including 0.3 μ m, 0.5 μ m, 1 μ m, 3 μ m, 5 μ m, and 10 μ m. It can monitor the types of particle sizes and the number of particles per cubic meter in real-time online. Through standard RS485 interface and Modbus RTU protocol, it can achieve real-time data transmission with various intelligent terminals such as computers, making it convenient for on-site measurement and remote monitoring.

The six particle size channels measured by SDS039 meet the technical specifications of the "JJF1190-2008 Dust Particle Counter Calibration Specification" issued by the General Administration of Quality Supervision, Inspection and Quarantine of China. The product series can meet the application needs of different industries.