UV Meter

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UV Meter

How to measure the UV index using a UV meter

 pdf version
The barometer must be hung on a wall or a post.The UV meter will turn on automatically when you go outside on bright days. Before you go, make sure the black sensor is clean. Use a clean cloth and methylated spirits if necessary.
  • Hold the meter up, out of the shade, and record the UV Index, a measure of UV intensity. A sad face will appear on the screen if the intensity is more than 2.
  • The UV meter will turn off automatically when you take it inside.
  • The meter has a number of other functions, such as indicating how long you can stay in the sun. Please refer to the attached instruction manual for more details.
  • A spare set of batteries (CR24-30 lithium) is included in this kit.
UV Meter

Do's and Don'ts

Tick correct Please take care of this expensive piece of equipment.

How it works

The UV meter measures ultra-violet light intensity, or skin burning intensity.
  • Ultra-violet light is not visible to the human eye. It has a shorter wavelength and more energy than visible light.
  • As light enters the black sensor on top of the UV meter it is scattered. The light goes through a series of filters (glass and interference filters) that allow only UV light through. The UV light then hits a silicon photodiode which measures the amount of UV radiation.
  • The digital unit turns the information into various measurements, such as how long a certain skin type can be safely exposed to the sun at that time.
Click here for information on Ultra-violet Radiation