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When it comes to describing various aspects of light and lighting towers, the terminology can be confusing. Lux, lumens and light plots are terms used in the lighting industry to describe how light is measured and will help when deciding which tower is most suitable for you.
Lux (or lx) is a unit that measures the amount of light output in a given area. This means we can measure the total ‘amount’ of visible light present and the intensity of it on a surface. One lux is equivalent to one lumen per square metre.
Lumens, also known as luminous flux, are another unit used to measure light. These tells us the total amount of light emitted from a bulb. Essentially, the more lumens you have, the more light will be emitted and the brighter the light.
Light plots are a graphical representation of the light spread for the total number of lamp heads on a particular model of lighting tower. They are measured in lux per metre. For example, if there are four lamp heads on a tower light, its light plot will show the spread of light radiating from the tower’s four lamp heads and not just one single head.
When you’re buying a lighting tower, it’s important to know that the model you’re looking at will give out enough light in the right area for your needs. You might have specific lighting requirements for health and safety, for example.
These metrics also allow you to easily compare the amount of light given out by different models.