How to use ultraviolet disinfection lamp?

The effective distance is no more than 2 meters, and the time is 30-60 minutes (counting from 5-7 minutes when turning on the light).

Precautions:

1, the ward should be cleaned before irradiation, so as not to affect the disinfection effect.

2, pay attention to protect the eyes and skin when irradiation, should cover or wear goggles.

3. The ultraviolet lamp tube should be kept clean. Don't turn on the light immediately after turning it off. Use it after it is a little cold to avoid damage.

4. Regularly measure the irradiation intensity or sterilization effect of ultraviolet lamp.

Extended data:

sterilizing effect

The sterilization effect is determined by the irradiation dose received by microorganisms, and is also affected by the output energy of ultraviolet rays, which is related to the type, light intensity and use time of the lamp. As the lamp ages, it will lose 30%-50% strength. The ultraviolet irradiation dose refers to the amount of ultraviolet rays with a specific wavelength when the bacteria inactivation rate reaches a certain level: irradiation dose (J/m2)= irradiation time (s)×UVC intensity (W/m2). The greater the radiation dose, the higher the disinfection efficiency. Due to the size requirements of the equipment, the irradiation time is only a few seconds. Therefore, the UVC output intensity of the lamp tube has become the most important parameter to measure the performance of ultraviolet > disinfection equipment.

In urban sewage disinfection, the average radiation dose is generally above 300 J/m2. Below this value, the phenomenon of light revival may occur, that is, the bacteria can not be completely killed, and when they flow out of the channel and receive visible light irradiation, they revive again, which reduces the sterilization effect. The higher the sterilization efficiency, the greater the irradiation dose.

The main factor affecting the dose of ultraviolet radiation received by microorganisms is light transmittance (254 nm). When the output intensity and irradiation time of UVC are fixed, the change of light transmittance will cause the change of the actual dose accepted by microorganisms.

Baidu encyclopedia-ultraviolet disinfection