PRG Best Boy 4000 User Manual - Manual (Page 93)

BEST BOY 4000 ® SPOT LUMINAIRE USER MANUAL 85
Wide Field of View
Iris Full Open
66º Full Angle
19,500 Field Lumens
Throw Dist. (Ft) 20 30 50 75 100
Beam Dia. (Ft) 18.2 27.3 45.6 68.3 91.1
Illuminance (fc) 71 32 11 5 3
---------------- ---------------- ---------------- ---------------- ---------------- ----------------
Throw Dist. (m) 5 10 20 25 30
Beam Dia. (m) 4.6 9.1 18.2 22.8 27.3
Illuminance (lux) 1140 285 71 46 32
Multiply throw distance by Tn to find beam diameter.
Divide cd (candela) by distance squared to find center beam illuminance.
Dist. in Ft. = foot candles
Dist. in meters = lux