The principle of ultraviolet disinfection is to use ultraviolet radiation to cause photolysis and denaturation of bacteria proteins, and the amino acids, nucleic acids and enzymes of bacteria are destroyed and died. At the same time, when the ultraviolet rays pass through the air, the oxygen in the air is ionized to generate ozone, which strengthens the bactericidal effect. Ultraviolet is mostly used for disinfection of air and objects, with a wavelength of 253.7nm. For air disinfection, the effective distance does not exceed Zm, the irradiation time is 30 ~ 60min, for the disinfection of items, the effective distance is 25 ~ 60cm, the irradiation time is 20-30min, and the timer starts from 5-7min when the light is on. In order to ionize oxygen in the air to produce ozone).
When the ultraviolet lamp used for disinfection is at a voltage of 220V, an ambient relative humidity of 60%, and a temperature of 20 ° C, the radiation intensity of 253.7nm ultraviolet rays should not be less than 70μw / cm2 Measurement, the special ultraviolet lamp is measured at the distance of use, the ultraviolet intensity meter used must be calibrated). The ultraviolet lamp’s irradiation intensity gradually decreases during use, so the intensity of disinfecting ultraviolet rays should be measured frequently, once it drops below the required intensity; it should be replaced in time, so it is required to use an ultraviolet radiation meter to detect the intensity of ultraviolet radiation.
It is generally tested in accordance with the technical specifications of the UV lamp. The UV lamp manufacturer will provide the intensity description:
1.The center intensity at xx mm is as high as xxx μw / cm2, and it is sufficient to measure it with an ultraviolet light meter according to this data.
2.There will be a minimum intensity, and the minimum intensity of the effective irradiation area will reach xxx μw / cm2. According to this data, use an ultraviolet illuminance meter to measure.
Knowing the above UV intensity test standards for UV lamps that can be used for disinfection, we can know that the LPCE-2 (LMS-9000BUV) UV lamp test system of Shanghai Lishan meets the UV intensity test standards of UV lamps. LISUN LPCE-2(LMS-9000BUV) UV Lamp Test System is used to test the UV lamp (light source) Spectrum, Radiant, Efficiency, CRI, CCT, UVA, UVB, UVC radiant and electric parameters.Spectral Range Wavelength: 200-400nm(UV). The whole system includes the LMS-9000BUV High Precision UV Spectroradiometer,CFS-1.2M Silica Fiber,CASE-UV036 Dark Case for UV Test ,SLS-UV UV Standard Light Source with Calibrate Current (Optional).
Here is photo below shows the test system:
The following is the test report of this product for your reference:
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