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Function and application of aluminum ultraviolet sensor
The human five senses are very complex and sensitive 'sensors'. However, most people's five senses can only perceive information from the outside world qualitatively, but not quantitatively. In addition, there are many physical quantities that cannot be felt by the human five senses, like infrared and ultraviolet spectra. Ultraviolet rays (Ultraviolet Rays/abbreviated UV) mainly refer to the visible rays of the sun (red orange, yellow, green, blue and purple), and the invisible light other than purple. Ultraviolet is the general term for radiation with wavelengths from 10nm to 400nm in the electromagnetic spectrum. According to different wavelengths, ultraviolet rays are generally divided into three bands: A, B, and C, as follows: UVA is 400-315 nm, UVB is 315-280 nm, and UVC is 280-100 nm. Corresponding to different wavelengths, specific applications are different. The instrument used to monitor ultraviolet light is called an ultraviolet sensor, which can use a photosensitive element to convert the ultraviolet signal into a measurable electrical signal through the photovoltaic mode and the light guide mode, so as to achieve the purpose of monitoring. The earliest ultraviolet sensor was based on pure silicon, but according to the instructions of the National Institute of Standards and Technology, pure silicon diodes also respond to visible light and form unwanted electrical signals, resulting in low accuracy. GaN (Gallium Nitride) UV sensors have an accuracy much higher than that of monocrystalline silicon, making them the most commonly used UV sensor material. The aluminum-shell ultraviolet sensor introduced today is one of them. The RS-UV-*-AL aluminum-shell ultraviolet sensor uses an imported chip, which is based on the principle that a photosensitive element converts ultraviolet light into a measurable electrical signal to achieve ultraviolet light. Online monitoring. When ultraviolet rays are irradiated on the aluminum ultraviolet sensor, more than 98% of the ultraviolet rays pass through the transparent window made of high-quality light-transmitting materials, and irradiate the measurement that is sensitive to ultraviolet rays with a wavelength of 290-390nm The device is equipped with an imported high-precision ultraviolet sensor to monitor and analyze it. After being processed by a circuit with an industrial-grade microprocessor chip imported from the United States, the data is output as an RS485 signal and displayed on the background to achieve the purpose of monitoring ultraviolet rays. Data transmission and viewingProduct features1. Imported sensors have higher precisionThe circuit adopts American imported industrial-grade microprocessor chips and imported high-precision ultraviolet sensors. Ensure the excellent reliability and high precision of the product. 2. Accurate detection of highly sensitive measuring devicesUsing 290-390nm highly sensitive ultraviolet measuring devices to accurately measure the intensity of ultraviolet rays. 3. High-quality light-transmitting materialsThe light-transmitting window is made of quartz glass, and the ultraviolet light transmittance exceeds 98%, which avoids the problem of low measurement values u200bu200bdue to the absorption of ultraviolet rays by traditional PMMA and PC materials . 4. High protection grade: IP67 High protection grade shell. Waterproof, moisture-proof, corrosion-resistant, long service life, can be used in outdoor rain and snow environment for a long time. 5. All-aluminum shellThe shell adopts aluminum shell, which has good heat dissipation conditions, high heat resistance, sturdy structure, strong metal texture, and high UV protection level, which can be used outdoors for a long time without being brittle. At room temperature, it can react with oxygen to form a dense aluminum oxide film on the surface of the aluminum shell, which not only prevents further oxidation of aluminum, but also resists the humid environment of agriculture, increasing the use time of the equipment and saving costs. 6. Wide application The sensor can be widely used in environmental monitoring, meteorological monitoring, agriculture, forestry and other environments. Measure ultraviolet rays in the atmosphere and under artificial light sources.
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