The hot cathode uvc lamp uses tungsten wire as the cathode body, and its surface is coated with low work function metal oxide. During the working life of the hot cathode uvc lamp, the oxide has chemical and electrochemical poisoning problems, so the lamp life is generally only about 1,000 hours, and the rated life of the uvc germicidal lamp produced by Changzhou Lightbest is about 9,000 hours.

The cold cathode is made of pure metal, and there is no poisoning problem, so its life is 5 ~ 10 times longer than hot cathode lamp.

        The tungsten filament of the hot cathode lamp recrystallizes at high temperature, and becomes brittle and breaks easily after becoming granular crystals, and is not resistant to vibration. It is not suitable for use in environments with strong vibrations such as cars, ships, and airplanes. The cold cathode has no such problem and is suitable for use in environments with strong vibrations.

        It is generally believed that cold cathode uvc disinfection lamps have lower power utilization than hot cathode ultraviolet disinfection lamps. However, the power utilization rate actually increases after the special process is adopted.

        The hot cathode lamp uses the electron powder on the electric heating electrode to bombard the mercury atoms to produce the transition of mercury vapor from a low energy state to a high energy state to release ultraviolet rays; while the cold cathode lamp supplies electrons through field emission or secondary emission. , The same is to excite mercury atoms to cause energy transition to release ultraviolet light.

         The cold cathode doesn't need to consume electronic powder in principle, and the lamp has a relatively longer service life. In the field of cold cathode research, a considerable number of industry leaders have developed cold cathode ultraviolet germicidal lamp products with a service life of more than 12,000 hours. The cold cathode uvc germicidal lamp produced by Changzhou Lightbest has an rated life of 15,000 hours.

 -Part of the content is excerpted from the Internet