Information

ANSI/NEMA FL-1 standard
.The descriptions of test contents and icons
3.Beam Distance:
The distance from device at which the light beam is 0.25 lux.
Results are reported in meters.
Purpose:
To provide a procedure to determine the maximum distance at which
the devices is capable of producing 0.25 lux of light within 30s to 2
min of operation.
 Procedure:
Place the luxmeter at a test distance of either 2 or 10 or 30 meters
from the lens of the device to be tested. Use the luxmeter to identify
the brightest point of the beam pattern and record the highest
indicated value.