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V
ARI
*L
ITE®
-
VL2B
AND
VL2C
S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
CONFIDENTIAL
02.9631.0010
15 Jan 98
1.4 Photometric
Data
The chart below represents beam specifications for the VL2B/VL2C
luminaire. Specifications are given for spot diffusion and flood diffusion.
VL2B/VL2C Wash Luminaire with 400W & 600W Metal Hallide Lamp
LENS and
LAMP
SETTINGS
DIFFUSION
CANDELA
(cd)
BEAM
ANGLE
(degrees)
BEAM
DIAMETER
TN*
FIELD
ANGLE
(degrees)
FIELD
DIAMETER
TN*
HTI 400 W/SE
(Narrow Beam)
Spot
Flood
876,000
126,400
4
11
.07
.19
11
24
.19
.42
HTI 400 W/SE
(Wide Beam)
Spot
Flood
235,200
81,200
9
14
.16
.24
20
29
.35
.52
HTI 600 W/SE
(Narrow Beam)
Spot
Flood
606,710
332,903
6
17
.1
.3
8
23
.14
.44
HTI 600 W/SE
(Wide Beam)
Spot
Flood
365,040
201,240
9
10
.16
.17
18
25
.32
.44
* Multiply distance by Tn to determine coverage.
To calculate Illuminance (I) at a specific distance (D);
I = cd (cos 0)
D
2