Application Of Ultraviolet Sterilization Lamp

1. Each microorganism has its specific UV killing and death dose standard. Its dose is the product of irradiation intensity and irradiation time (sterilization dose = irradiation intensity • irradiation time / k = I • T), that is, the irradiation dose of UV depends on the intensity of UV and the length of irradiation time. The effect of high-intensity short-time and low-intensity long-time irradiation is the same.

2. The quartz lamp tube will gradually age after being used for a period of time, and the ultraviolet irradiation intensity will decline. In order to achieve the effect of complete disinfection, the irradiation intensity of the quartz lamp should be checked and measured regularly, and it should be replaced immediately if it is found that the intensity is not enough.

3. Ultraviolet rays can only propagate along a straight line, and the penetration ability is weak. Any paper, lead glass and plastic will greatly reduce the irradiation intensity. Therefore, during disinfection, the disinfected part should be fully exposed to ultraviolet rays, and the lamp tube should be wiped regularly to avoid affecting the ultraviolet penetration rate and irradiation intensity.

4. Ultraviolet rays can cause great harm to human skin. Do not use UV lamps in places with people, let alone look directly at the lit lamps with your eyes. Because short wave ultraviolet rays cannot pass through ordinary glass, wearing glasses can avoid eye injury.

5. Generally, ozone lamps cannot be used in places with personnel activities, because ozone will promote the condensation of human hemoglobin, cause insufficient oxygen supply, dizziness and nausea, and affect human health. Especially when the ozone concentration reaches > 0.3ppm (mg / m2), it will cause serious harm to human body.

6. The purple blue light in the low-pressure discharge lamp is the mercury vapor pressure. Although the intensity of the mercury vapor pressure is still related to the ultraviolet light, it does not directly represent the intensity of the ultraviolet light, that is, the intensity of the ultraviolet light cannot be determined by the naked eye.

7. Lamps and reflectors can ensure the concentration of ultraviolet energy and avoid damage to workers. The reflector must be made of materials that attract less and reflect more 253.7nm ultraviolet materials. The reflection coefficient * * of aluminum with oxidized and polished surface to short wave ultraviolet rays. Therefore, the reflection system of general ultraviolet lamps is made of aluminum.