UV light intensity meter | UV Spectrum classification

Ultraviolet rays can be divided into four regions according to different wavelengths. Short-wave ultraviolet rays are referred to as UVC, wavelength 200-280nm, medium-wave ultraviolet rays are referred to as UVB, wavelength 280-320nm, long-wave ultraviolet rays are referred to as UVA, wavelength 320-400nm, UVD band wavelength is 100-200nm, and Called vacuum ultraviolet.

UVA band: The wavelength is 320-400nm, also known as the long-wave black spot effect ultraviolet rays. The ultraviolet rays in this band have strong penetrating power and can penetrate most transparent glass and plastics. UVA can directly reach the dermis layer of the skin, destroy elastic fibers and collagen fibers, and tan our skin. The UVA wavelength of 360nm wavelength conforms to the phototaxis response curve of insects, and can be used to make trap lights. The 300-420nm wavelength UVA ultraviolet rays can pass through a special colored glass lamp tube that completely cuts off visible light, and can only radiate near-ultraviolet light centered at 365nm, which can be used in ore identification, stage decoration, banknote inspection, etc.

UVB band: the wavelength is 275-320nm, also known as medium wave erythema effect ultraviolet, medium penetration, its shorter wavelength part will be absorbed by transparent glass, most of the medium wave ultraviolet contained in sunlight is absorbed by the ozone layer Only less than 2% can reach the surface of the earth, which will be particularly strong in summer and afternoon. Ultraviolet health care lamps and plant growth lamps are made of special transparent glass (does not transmit light below 254nm) and phosphor powder with a peak near 300nm.

UVC band: wavelength is 200-275nm, also known as short-wave sterilization ultraviolet. It has the weakest penetration ability and cannot penetrate most transparent glass and plastics. The short-wave ultraviolet rays contained in sunlight are almost completely absorbed by the ozone layer. Short-wave ultraviolet rays are very harmful to the human body, short-term exposure can burn the skin, and long-term or high-intensity exposure can also cause skin cancer. The ultraviolet sterilization lamp emits UVC short-wave ultraviolet. At present, the industry of UVC ultraviolet sterilization and disinfection is very extensive. It often involves human skin contact and disinfection of common foods in life; therefore, the corresponding UVC ultraviolet irradiance meter should regularly pay attention to its ultraviolet radiation intensity. Healthy living environment.

Linshang LS125 multi-probe UV light intensity meter can be equipped with 9probes. This UV light intensity meter can test the ultraviolet intensity of UV-A,UV-B,UV-C rays.

UVD band: The wavelength is 100-200nm, also known as vacuum ultraviolet. Its penetration ability is extremely weak. It can oxidize the oxygen in the air to ozone, called ozone generation line.