As we all know, the dust particle counter is the 1 instrument used to measure the number and size distribution of dust particles per unit volume in a clean environment. It is mainly used in clean rooms. Because the clean room grade standard and the international standard ISO 14644, the air cleanliness level in the clean room (area) and related controlled environment is divided according to the only index of suspended particle concentration, and only the particle size limit (low limit) is considered in 0.1um ~ 5.0um A population of particles with a cumulative distribution within the range. According to the particle diameter, it can be divided into normal particles (0.1um ~ 5.0um), ultrafine particles (& lt;0.1um) and macro particles (& gt;5.0um). Therefore, it is required to use a dust particle counter to remotely monitor the dust concentration change in the working environment. Then you know dust particle counter how does work ? The following is an introduction by Yi Yuntian:

dust particle counter works:

The light from the light source is focused in the measuring cavity by the lens group. When each particle in the air quickly passes through the measuring cavity, the incident light is scattered once to form a light pulse signal. This optical signal is sent to the optical detector through the lens group 2, converted into an electrical pulse signal in proportion, and then amplified and discriminated by the electronic circuit of the instrument to pick out the required signal and display it through the counting system.

the dust particle counter extracts the sampling gas through the sampling pump. in the laser chamber, the sampling gas is irradiated by the laser, and the frequency of the flash reflected by the particles represents the number of particles, the reflected light intensity, and the particle size of the particles. the components in the laser chamber are not protected by sheath gas.

dust particle counter is based on the principle of laser scattering. it adopts industrial-grade long-life high-temperature-resistant linear laser and vehicle-grade large-flow turbo fan. it can stably, reliably and accurately display the number of particles above 0.3μm, support 485 communication, and can remotely monitor the dust concentration change in the working environment. Moreover, it has the function of intelligent linkage with purification equipment such as FFU fans, and always maintains the number of suspended particles in the environment within the lower range required by the standard. In doing so, its energy consumption and equipment loss will be controlled at a lower level.

In summary, it is the principle of the dust particle counter. It is precisely because of its various advantages that the dust particle counter can be widely used in authoritative institutions such as drug inspection institutes, blood centers, epidemic prevention stations, disease control centers, quality supervision institutes, electronic industries, pharmaceutical workshops, semiconductors, Optical or precision machining, plastics, paint, hospitals, environmental protection, inspection institutes and other production enterprises and scientific research departments.