Laser dust particle counter light source function - Database & Sql Blog Articles

The light source is a crucial component in a laser particle counter, significantly affecting the instrument's overall performance. It must offer high stability, long service life, and minimal interference. There are two common types of light sources used: traditional lamps and lasers. Traditional light sources, such as tungsten-iodine lamps, tend to be large, generate a lot of heat, have a short lifespan, and require preheating after startup. In contrast, laser light sources are compact, highly stable, and have a much longer operational life. They are often integrated with the detection chamber and photodetector to form a complete sensor unit. Common laser sources include helium-neon (HeNe) lasers and laser diodes. Particle counters using traditional light sources typically show low sensitivity to particles smaller than 0.3 micrometers. Their signal amplitudes are often comparable to the internal noise of the device, making it challenging to distinguish between real signals and background noise. As a result, even though these instruments may be labeled with a 0.3 μm channel, they are generally suitable only for detecting particles larger than 0.3 μm, especially those above 0.5 μm. On the other hand, laser-based particle counters benefit from the excellent monochromaticity and consistent energy output of lasers, leading to a higher signal-to-noise ratio (SNR). This allows some advanced models to detect particles as small as 0.1 micrometers. The reliability and precision of laser sources make them the preferred choice in modern particle counting systems. Shangyu Star Equipment Co., Ltd. is a professional manufacturer located in Daoxu Town, Shangyu District, Shaoxing City, Zhejiang Province. The company combines production, research and development, processing, and trade, offering a wide range of laboratory equipment and cleanroom solutions. Its main products include drying ovens, incubators, muffle furnaces, distilled water units, as well as clean benches, air showers, fume hoods, and biological safety cabinets. With a strong R&D team and a comprehensive after-sales support system, Shangyu Star has become a leading brand in China's laboratory equipment industry. The company continuously strives to provide high-quality products and services to its customers. Whether you're looking for reliable testing equipment or complete purification systems, Shangyu Star is your trusted partner. For more information about our products and services, feel free to contact us. We welcome all inquiries and look forward to serving you. Share this page: [Facebook] [Twitter] [WeChat]

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