Ultraviolet meters are sensitive to UV light and are used to measure personal exposure to UV rays, monitor climate trends, and confirm the effectiveness of UV sterilization systems. They can be purchased from scientific supply companies, outside suppliers, and manufacturers, and are sometimes available for free at safety seminars. UV meters come with guides suggesting precautions to take depending on the UV index, and many personal meters alert the user when the maximum safe exposure level has been reached.
An ultraviolet meter is a measuring device sensitive to ultraviolet light. Many UV meters come with a range of sensitivities, depending on the settings in which they are intended to be used. Scientific supply companies and outside suppliers sell ultraviolet meters and are also available directly through the manufacturers. They are also sometimes available at safety seminars where health officials provide information about exposure to ultraviolet light, and in some cases they can even be distributed free of charge to the public.
One use for an ultraviolet meter is in measuring the amount of ultraviolet light that someone is personally exposed to. People who spend time outdoors, regardless of the weather, are at risk of exposure to UV rays which can damage the skin and increase the risk of developing skin cancer and other skin problems. Using an ultraviolet meter, someone can determine the UV index and see how long it is safe to be outdoors. Also known as a sunlight meter, this type of meter can be extremely useful for athletes who train outdoors and people who work outdoors.
Many meters have guides suggesting precautions to take, depending on the UV index. If the index is low, no precautions are needed. As it increases, protective clothing, sunscreen, and other measures may be recommended. Many personal ultraviolet meters also alert the user when the maximum safe exposure level has been reached, allowing the user to plan trips outdoors to avoid sunburn.
Another use for such meters is in climate monitoring. UV exposure varies across the globe, and monitoring programs use the readings of these meters to track climate trends and identify areas of high UV exposure. An ultraviolet meter can also be used underwater, as can be done in programs that monitor coral reef health. These meters typically keep data logs and can send data remotely or be connected to a computer to download their data for analysis purposes.
For people who use ultraviolet sterilization systems, an ultraviolet meter is a useful tool for monitoring the system. The tool shows whether or not the exposure is consistent and can be used to confirm that the system is working properly. These systems tend to become less effective over time and it is important to know when UV exposure decreases to the point where the bulb in the system needs to be replaced. Such meters are usually waterproof so they can be used in wet or humid environments such as aquariums.
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