Ultraviolet ray mainly refers to the visible rays of the sun, other than purple light invisible to the naked eye. Ultraviolet is the general term for radiation with wavelengths ranging from 10nm to 400nm in the electromagnetic spectrum. According to the different wavelength, uv is generally divided into A, B, C three bands, as follows: UVA is 400 ~ 315 nm, UVB is 315 ~ 280 nm, UVC is 280 ~ 100 nm. Corresponding to different wavelengths, the specific application is different. And used to monitor the ultraviolet instrument is called UV sensor, the sensor can use photosensitive components through photovoltaic mode and photoconductive mode to convert ultraviolet signal into measurable electrical signals, so as to achieve the purpose of monitoring.
The earliest uv sensors were based on pure silicon, but according to the NIST, pure silicon diodes also respond to visible light, generating unwanted electrical signals and resulting in poor accuracy. GaN uv sensor, whose accuracy is much higher than that of monocrystalline silicon, has become the most commonly used UV sensor material.
And the aluminum shell UV sensor introduced today is one of them, JXCT aluminum shell UV sensor using imported chips, based on the photosensitive element will be converted into a measurable electrical signal principle, UV online monitoring.
When ultraviolet irradiation on the aluminum shell UV sensor, more than 98% of the ultraviolet light through the high quality of pervious to light material perspective window, irradiation on in 290-390 nm wavelength ultraviolet sensitive of measuring devices, through the analysis of the internal configuration of imported high-precision UV sensor monitoring, with the United States imports of industrial-grade microprocessor chip circuit after processing, The data to RS485 signal output, and display on the back table, to achieve the purpose of ultraviolet monitoring.
1, the imported sensor has higher accuracy
The circuit uses industrial grade microprocessor chip imported from the United States, imported high-precision ultraviolet sensor, to ensure excellent reliability and high-precision products.
2, Accurate detection of highly sensitive measuring devices
Using 290-390nm highly sensitive uv measuring device, accurate measurement of uv intensity.
3, high quality transparent material
The transmittance window is made of quartz glass, and the ultraviolet transmittance is more than 98%, which avoids the problem of low measured value due to the absorption of ultraviolet light by traditional PMMA and PC materials.
4, High protection grade: IP67
High protection grade enclosure. Waterproof, moistureproof, corrosion resistance, long service life, can be used in outdoor rain and snow environment for a long time.
5, all aluminum shell
The shell adopts aluminum shell, good heat dissipation, high heat resistance, solid structure, strong metal texture, high uv protection grade can be used for a long time in outdoor brittle. At room temperature, it can react with oxygen to generate dense alumina film on the surface of aluminum shell, which can not only prevent further oxidation of aluminum, but also produce resistance to agricultural wet environment, increasing the use time of equipment and saving cost.
6, widely used
The sensor can be widely used in environmental monitoring, meteorological monitoring, agriculture, forestry and other environments. Measure ultraviolet radiation in the atmosphere and in environments such as artificial light.