Keyword Analysis & Research: llmf lamp

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What is the lamp lumen maintenance factor (llmf)?

The amount of light from the light source at a specific time in the future is referred to as the lamp lumen maintenance factor, or LLMF. The lifetime of a LED module is defined as the time it takes until its light output, or lumen maintenance, reaches 70% of the initial output.

What does llmf stand for?

Because of the Lamp Lumen Maintenance Factor (LLMF) of 0,7 for the LED, the lighting installation needs to be overdimensioned by a factor of 42%. SYLVANIA OCTRON HO/ECOLOGIC fluorescent; Lamp lumen maintenance factor at 4800 hours = 95%; use for comparison to 12,000 hour life lamps.

What is the normal value of llmf for a room?

Depends on reflectance factors in the room, how clean is the environment and finally the cleaning interval of the room. Normal values for interior use are between 0,95–0,97 for clean environments. LLMF is basically the same as the L-value. L80 corresponds to a LLMF of 0,8.

What is the L-value and llmf for Glamox?

Normal values for interior use are between 0,95–0,97 for clean environments. LLMF is basically the same as the L-value. L80 corresponds to a LLMF of 0,8. In order to find the correct L value you must first define the correct required lifetime and the correct required ambient temperature (T a ). Glamox states the L-value after 50000 h at T a 25 deg.


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