Particle Detector

With the development of electronics, precision processing, military, medical, pharmaceutical, food production and other industries, the requirements for the control of dust particles and bacterial particles in the air are getting higher and higher, and the laboratory also needs to be dust-free and clean. The level of dust-free purification is mainly determined according to the number of particles with a size larger than the classification standard per cubic meter of air. In other words, the so-called dust-free is not without a little dust, but controlled in a small unit. Of course, the particles in this standard that meet the dust standard are very small compared to our ordinary dust, but for the optical structure, even a small amount of dust will have a very large negative impact, so in the optical structure product In production, dust-free is an inevitable requirement.
The amount of fine dust with a particle size of less than 0.3 microns per cubic meter is controlled below 3500, reaching the dust-free standard A level. The current dust-free standards used in chip-level production and processing have higher requirements for dust than A-level. This high standard is mainly used in the production of some higher-level chips. The amount of fine dust of 5uM and below is strictly controlled within 1000 per cubic meter, which is also called 1K level in the industry.

 

Particle Detector


No matter how small the dust is, it is impossible to escape the "eyes" of the particle detector! This is an instrument that counts the number of dust particles and provides a basis for the assessment of air cleanliness. As an instrument used to detect the number and distribution of dust particles per unit volume in a clean environment, it has the advantages of fast detection speed, high measurement accuracy, high reliability, flexible use, and stable measurement performance. It is widely used in production enterprises and scientific research departments such as blood centers, epidemic prevention stations, disease control centers, quality supervision institutes, electronics industry, pharmaceutical workshops, semiconductors, optics or precision processing, plastics, coating, hospitals, environmental protection, inspection institutions, etc. .
Particle detector is a special device used to detect the particle size and particle distribution of dust particles in the air. The detection speed of the counter is indeed very fast, the dynamic distribution is also relatively wide, and it will not be affected by human factors. The measurement result is more accurate. It has been the first choice for many manufacturers and scientific research departments for particle detection. Use dust particles to generate scattered light under strong light irradiation. Plan to detect the intensity of scattered light. The stability of the receiving sensitivity of the particle detector is the key to ensuring the measurement accuracy. A method of actively calibrating the dust particle counter is proposed to keep the instrument at an acceptable sensitivity during the calibration process.