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Laser particle counter application fields and working process

remote particle counter

A Laser particle tester is a device used to detect and analyze suspended particles in the air. It provides an assessment of environmental quality and health safety by counting, classifying and measuring the size and concentration of these particles. The dust particle counter is a measuring instrument stipulated by the state. After being used for a period of time, its optical system and detection system will undergo changes, such as aging of the light source, reduction in luminous efficiency or misalignment of the focus, and contamination of the lens, thus causing changes in the conversion sensitivity of the entire machine.
The dust particle counter is an instrument that uses the principle of light scattering to count dust particles. Light scattering is related to factors such as particle size, light wave wavelength, particle refractive index, and particle absorption characteristics of light. However, in terms of scattered light intensity and particle size, there is a basic rule that the intensity of scattered light from particles increases as the surface area of the particles increases. In this way, a certain flow of dust-containing gas passes through a beam of strong light, causing the particles to emit scattered light, which is projected onto the photomultiplier tube through the condenser lens, changing the light pulse into an electrical pulse, and calculating the number of particles from the number of pulses. The particle diameter is obtained as a function of the intensity of light scattered by the particles and the particle size. In this way, the size of the particles can be inferred by simply measuring the intensity of scattered light. This is the basic principle of the light scattering dust particle counter.
The dust particle counter is used to measure the size and number of dust particles per unit volume of air in a clean environment. The dust particle counter can directly detect clean environments with cleanliness levels of Class300, 000 to Class10. The dust particle counter can directly detect cleanliness levels of Clean environment from level 300,000 to level 100. The dust particle counter uses a semiconductor laser light source and a large LCD screen. It has high detection accuracy and simple and clear function operations. It is controlled by a microprocessor and can store and print measurement data. It is very convenient to test in a clean environment. In addition, the data collected by the dust particle counter can be uploaded to the computer through communication software, and can be edited, saved and printed in office excel. Dust particle counters are widely used in electronics, optics, chemistry, food, cosmetics, medicine and health, biological products, aerospace and other sectors.
Dust particle counter Dust particle counter determines the cleanliness of the air by measuring the number (concentration) of dust particles in a unit volume and the particle size distribution of dust particles. Generally speaking, the higher the concentration of particles of the same particle size, the lower the air cleanliness level and the worse the air quality. Dust particle counters can be widely used in various provincial and municipal drug testing institutes, blood centers, epidemic prevention stations, disease control centers, quality supervision institutes and other institutions, the electronics industry, pharmaceutical workshops, semiconductors, optics or precision machining, plastics, spray painting, hospitals, environmental protection , inspection institutes and other production enterprises and scientific research departments.
Brief description of the working process of dust particle counter:
Set the sampling period to 1 minute, the number of sampling points at each point to 3, the number of room sampling points to 4, and the room sampling address to 1. Use a hose to connect the sampling port of the instrument and the isokinetic sampling head, and fix the sampling head to the point measurement position. Press the start button and the instrument will start measuring. After 1 minute, a set of point data will be printed out. Continue measuring until the third set of data is printed. The instrument Automatically stop sampling; then move the isokinetic sampling head to the second measurement position, measure the second point data in the same way, until all four measurement point data are measured, the instrument automatically prints out the UCL data of the room as the room The basis for determining the cleanliness level.
The dust particle counter complies with the technical requirements stipulated in the national “Dust Particle Counter Calibration Specifications”. The entire machine function is controlled by a microcomputer and can directly print the test results. It has the characteristics of multiple functions, high measurement accuracy, fast speed, easy portability and simple operation. The instrument can measure the number of dust particles in six particle size channels at the same time in one sampling, and can choose to observe the number and changes of particles in one of the particle size channels. It is very convenient for research, detection and evaluation of various clean environments.
In short, dust particle testers play an important role in various industries and fields, helping to monitor and control the concentration and size of suspended particles in the air. It is of great significance for protecting human health, improving the working environment and maintaining environmental sustainability. The dust particle counter is a measuring instrument stipulated by the state and has good use effect.

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