When selecting a luminaire for usage in a hazardous location, there are a variety of different things to take into account.An significant factor to take into account is a luminaire's lumen output (or power).But are the output data for all lumens comparable?Here, we'll examine the distinction between "source lumens" and "delivered lumens."
Illuminant lumen: The quantity of light released directly from the lamp's source, without first passing through a lens or diffuser, is the "illuminant lumen" value.Each time light is reflected, refracted, or absorbed by a material, lumens are lost and the amount of "transmitted lumens" is less than the emission value that was defined.The output can also be obstructed or scattered because the mechanical design of the lamp inhibits the flow of light, particularly near the end of the beam Angle.
Transmission lumen: The best way to gauge a lamp's performance after installation is to use its "transmission lumen" value.The quantity of light actually supplied to the location after accounting for all obstructions like lenses, housing, and any filtering effects.
Now that we are aware of the two various ways lumens may be measured and the two distinctly different shapes they will make.We shall now look more closely at its impacts.
