The fluorescent UV lamp will age itself during use, and the irradiance will decrease. The old UV light weatherproof test chamber does not have an irradiation monitoring system. The irradiance is relatively stable within a certain period of time by periodically replacing the UV lamp and positional rotation. With the development of technology, the new ultraviolet light weatherproof test chamber is generally equipped with an irradiance monitoring system to ensure the stability of the irradiance. Correspondingly, new standards or standards for fluorescent UV lamp exposure tests generally have irradiance regulations. The irradiance specified in the test standard determines one aspect of the amount of light source (on the other hand, the duration of the irradiation). Irradiance is the amount of radiant energy received per unit area of ​​the sample surface per unit time, typically in W/m2, which is related to the monitored spectral band. At present, there are two main monitoring spectral bands used in the ultraviolet light weatherproof test chamber: 1, 340nm, for the monitoring of fluorescent UV lamps UVA-340 and UVA-351; 2, 310nm, for the monitoring of fluorescent UV lamp UVB-313. The irradiance monitoring system monitors the irradiance through the optical probe, adjusts the power of the lamp to maintain the stability of the irradiance. The irradiance monitoring system requires regular calibration. The knife set chef knife,bread knife,carving knife,utility knife,paring knife,sharpener,kitchen scissor,steak knife.You can choose packing with aluminum case, wooden block, stainless steel block.There are many assembly,for example 8pcs knife set,12pcs knife set ,20pcs knife set and more.The stainless-steel precision-honed blades for long-lasting sharpness.The ergonomic handles promote a comfortable, secure hold. Knife Set,Professional Knife Set,Chef Knife Set,Knife Block Set MEO DEMO CO., LTD. , https://www.meodemo.com
Irradiance of ultraviolet light weatherproof test chamber decomposition