Monitoring of UV lamp radiation intensity

Measuring method of radiant intensity value of ultraviolet lamp tube
After turning on the ultraviolet lamp for 5 minutes, operate according to the instructions, and place the probe of the ultraviolet intensity tester (ultraviolet irradiator) with a measuring wavelength of 253.7 nm at the center of the vertical 1m under the ultraviolet lamp to be inspected. After the instrument is stable, the data shown is the ultraviolet lamp The radiation intensity value of the tube. The new tube radiation intensity value of the 30W straight tube ultraviolet lamp is ≥100μW/cm2, and the radiant intensity value in use is ≥70μW/cm2; the radiation intensity value of the new 30W high-intensity ultraviolet lamp is ≥200μW/cm2. UV dosimeter is used to test the uv intensity of the uvc germicidal lamp.

Strengthen the monitoring of UV lamp radiation intensity
The ultraviolet lamp in use should be tested for intensity with an ultraviolet illuminance meter in 3-6 months, and the lamp tube with unqualified intensity should be replaced in time. Use the ultraviolet radiation illuminance meter to make a measurement calibration once a year to maintain accuracy.

When monitoring, it must be in accordance with the measurement conditions in the "Disinfection Technical Specifications", the voltage is 220V, the temperature is above 20 degrees, the relative humidity is less than 60%, and the stable intensity after turning on the lamp for 5 minutes is the radiation intensity of the ultraviolet germicidal lamp. The ultraviolet radiation intensity can also be measured with a chemical indicator card. The indicator card is irradiated 1m away from the lamp tube for 1 minute, and the photosensitive coating changes from white to purple-red. Compared with the standard color block, the lamp radiation intensity can be known.