Ultraviolet irradiance meter is a broad-spectrum power measuring instrument, mainly used to measure the radiant energy power density of ultraviolet rays, that is, the radiant energy power per square centimeter
UV irradiator
Ultraviolet irradiance meter is a broad-spectrum power measuring instrument, mainly used to measure the radiant energy power density of ultraviolet rays, that is, the radiant energy power per square centimeter. The unit is: microwatt / square centimeter (μW / cm2), the detector is located on the front end of the instrument, it is convenient and fast to use, and the measurement is reliable
Main application areas
1. Building film, solar film, heat insulation glass, etc. to ultraviolet light barrier performance test;
2. Radiation intensity measurement of ultraviolet source (sun, ultraviolet lamp, etc.);
3. UV disinfection, curing;
4. Meteorology and agricultural production;
Instructions
1. Radiation intensity measurement of ultraviolet source (sun, ultraviolet lamp, etc.) When measuring the ultraviolet intensity of the ultraviolet source, the direction of the detector is directly facing the ultraviolet source. Press the "POWER" key to turn on the instrument and select the appropriate test range. The picture on the right measures the intensity of the ultraviolet radiation from the sunlight reaching the ground, and the measured value is 712 uW / cm2.
2. Test for the ultraviolet barrier performance of solar thermal insulation film, heat insulation glass, etc. When testing the ultraviolet barrier performance of solar insulation film or heat insulation glass, it should be measured in two steps:
Step 1: Measure the radiation intensity of the UV source:
The ultraviolet source can be selected from sunlight or ultraviolet lamps. First measure the ultraviolet radiation of the ultraviolet source
The radiant power density is UV1 W. (Figure 1 the first step)
Step 2: Measure the radiation intensity of the ultraviolet source blocked by the solar film:
Keep the distance between the ultraviolet source and the instrument constant, insert the solar film or thermal insulation glass to be measured between the instrument and the ultraviolet source, and the object to be measured must be close to the measurement end surface of the instrument to avoid the influence of external light. Note the UV2 W radiant energy power density when there is a solar film.
Then the blocking rate of ultraviolet rays = UV2 UV1 100% -W / W
From the first step, UV1 W = 372 μW / cm2
From the second step, UV2 W = 12 μW / cm2
UV blocking rate = UV2 UV1 100% -W / W = 100% -12 / 372 = 96.77%
Precautions
1. When testing the barrier performance of solar film or thermal insulation glass to ultraviolet light, the distance of the light source should be kept the same in the two-step measurement.
2. Choose the appropriate range for different intensity UV sources.
3. When not in use, please press the "POWER" button to shut down.
4. When replacing the battery, open the back cover, remove the old battery, and replace with 6F22 alkaline battery.
5. Avoid contact with corrosive materials and keep away from high temperature and high humidity environment.
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