Ultraviolet sterilization and UV lamp intensity meter

Ultraviolet sterilization mainly affects nucleic acids, influencing proteins and inactivating them, so whether it is bacteria, viruses or fungi, most of them have effects. But the UV lamp can only disinfect the virus in the indoor environment, and it is helpless to the virus UV lamp in the infected patient.Is UV disinfection lamp harmful to human body?The ultraviolet disinfection lamp uses the ultraviolet light emitted by the mercury lamp to realize the sterilization and disinfection function. It emits a large amount of ultraviolet energy, and if it does not take effective protective measures, it is easy to cause harm to the human body. For example, when exposed skin is irradiated by this kind of ultraviolet light, the mild ones will appear redness, itching, desquamation, and the severe ones will cause sunburn or solar keratosis, and even cause skin tumors and canceration. Ultraviolet rays also damage human skin cells and cause premature skin aging.In addition, the ultraviolet disinfection lamp is the "invisible killer" of the eye. The irradiation of the ultraviolet disinfection lamp will cause inflammation of the conjunctiva, cornea and cataracts.The most widely used ultraviolet disinfection lamps are hospital indoor disinfection and sanitation and anti-epidemic. Some indoor places that pay attention to environmental quality will also be decorated with various exquisite appearances to use, but the hospital will stipulate that the purchase of new lamps will use sterilization lamp ultraviolet radiation The meter measures the radiation intensity of the ultraviolet sterilization lamp, and removes the lamp tube whose ultraviolet sterilization lamp does not meet the standard; the lamp tube in use will also be regularly tested with a germicidal lamp ultraviolet irradiance meter. The lamp in is tested once, and the lamp whose radiation intensity is lower than 70uW/cm2 is replaced.

However, in the process of ultraviolet sterilization, the radiation intensity of the ultraviolet sterilization lamp is difficult to ensure and is affected by various factors; long-term exposure will gradually weaken the radiation intensity of the ultraviolet sterilization lamp, resulting in the failure to achieve a good sterilization effect. The temperature and humidity of the ultraviolet irradiation environment will also affect the radiation intensity. It is especially important to note that the radiation intensity of some newly-made ultraviolet sterilization lamps cannot reach the standard; according to national standards, the newly-manufactured 30W ultraviolet lamp is vertically 1m below the center The measured radiation intensity should be >100uW/cm2 before entering the market. To measure the radiation intensity value of the ultraviolet germicidal lamp, a ultraviolet germicidal lamp can be used. Therefore, to monitor the radiation intensity of the ultraviolet germicidal lamp correctly and scientifically, a professional UV lamp intensity meter should be selected.