Difference between UV Intensity Sensor UVCLED and other UVC Detector?

According to the "2018 UV LED Application Market Report-Curing, Medical, Sterilization" report, it is estimated that from 2017 to 2022, the average growth rate of UV LED market output value can reach 33%. In addition to the stable development of the UVA LED curing market, the rapid growth of UVC LED sterilization in the medical industry cannot be ignored. Therefore, Linshang Technology has developed a UV intensity sensor for UVC LED.
Before understanding the differences between UV intensity sensor UVCLED and other UVC detectors, let's first understand the principle of UVC sterilization and the characteristics of UVC LED light sources.

I. The principle of UVC sterilization

1. Ultraviolet rays in the UVC band can destroy the molecular structure of the DNA and RNA of the microorganisms, kill the cells or make it unable to replicate, thereby achieving the purpose of sterilization.

2. Traditional UVC germicidal lamps are mostly 253.7nm low-pressure mercury lamps. Some people mistakenly believe that this wavelength is the best wavelength for sterilization. Actually, it’s wrong. 253.7nm is determined by the physical characteristics of the low-pressure mercury lamp. In fact, the ultraviolet rays with bactericidal effect are in a range of wavelengths, but 265nm is generally considered to be the best wavelength because this is the peak wavelength of the DNA absorption curve. 

II. The characteristics of UVC LED light source

With the increase of global environmental awareness and the continuous improvement of LED technology, the application of UVC LED has become more and more widespread. Household air purifiers, air conditioners, water tanks, humidifiers, smart trash cans, smart toilets, etc. can be sterilized by UVC LED. In addition, UVC LED has a variety of wavelengths and optical power options. Depending on the LED wavelength, application industry, usage time and optical power, different UVC LED can be matched. Therefore, when measuring UVC LED light sources, you need professional UV intensity sensors.

III. Differences between UV intensity sensors UVCLED and other UVC detectors

1. The UVC detectors on the market is specially designed for 253.7nm low-pressure germicidal lamps. The peak wavelength of the spectral response curve is 254nm, and the UV intensity sensors UVCLED can be used to measure UV LED lights in the range of 220-320nm., such as 275nm, 285nm, etc.

2. There is no uniform standard for UVC LED light sources around the world currently. Therefore, when designing UVC LED-specific UV intensity sensors, Linshang Technology's own standards are used for data calibration. But the traditional UVC low-pressure mercury germicidal lamp technology is very mature and has a standard calibration technology basis. Therefore, several other UVC detectors of our company can ensure that they pass national measurement.