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ELECTRICAL
Photometric Formulas:
10.764·footcandles=lux (lumens/meter
2
)
0.0929·lux=footcandles(lumens/foot
2
)
Range: 20lux,200lux,2000lux,20000lux,20fc,200fc,2000fc,20000fc
Resolution: 0.01lux,0.01fc
Spectral response: CIE photopic
The CIE photopic curve is an international standard for the color response
of the average human eye
Acceptance angle: ¦¢
2
<2% cosine corrected (150°)
Total accuracy for CIE standard illuminant A (2856K): ±(3%rdg + 10dgts)
CIE standard illuminant A can be realised by means of CIE standard
source A, which is defined as: A gas-filled tungsten-filament lamp
operating at a correlated colour temperature of 2856K
Temperature Coefficient: 0.1x (specified accuracy)/°C (<18°C or >28°C),
0.056x(specified accuracy)/°F (<64.4°F or >82.4°F)
Peak Hold response time: >50mS pulse light