Technical Specifications
Photometrics
28
FOOTNOTES:
1
Lumen maintenance is based on lamp manufacturer's stated data combined with estimated dirt depreciation.
2
Design System Lumens is the fixture lumens at 40% of rated lamp life and is
calculated as Quantity of Lamps x Lamp Lumens x Lumen Maintenance x Fixture Efficiency x Ballast Factor.
3
S/P Ratio is the lamp manufacturers stated Scotopic/Photopic Ratio; accepted by some lighting
designers to adjust for the relative strengths of scotopic and photopic vision, not yet adopted by IESNA.
4
S/P Adjusted Lumens calculates the brightness perception scotopic/photopic ratio as Design System
Lumens x (S/P)^.0.5
5
LER (Luminaire Efficiency Ratio) is an accepted method of comparing fixture performance.
System Performance Table
Cost of
1000 S/P
Adj Lmns -
4000 hrs
$0.08 kWh
Design S/P
No. of Lamp Lumen Fixture Ballast System S/P Brightness Adjusted
HBL T8 System Comparison Lamps Lumens Maintenance
1
Efficiency Factor Lumens
2
Ratio
3
Perception Lumens
4
Wattage LER
5
HBL-432-W-UPL 4 3100 94% 90% 1.15 12064 1.72 1.53 18416 147 $2.47 125
HBL-632-N-UPL 6 3100 94% 96% 1.15 18900 1.95 1.40 26393 221 $2.79 119
HBL-832-N-UPL 8 3100 94% 95% 1.15 24128 1.95 1.40 33693 302 $3.02 111
Comparison System
250W Metal Halide High Bay 1 23000 75% 78% 1.00 15000 1.50 1.22 18371 295 $6.59 49
250W High Pressure Sodium High Bay 1 30000 81% 78% 1.00 18978 0.67 0.73 13887 300 $8.85 36
400W Metal Halide High Bay 1 36000 75% 78% 1.00 21087 1.50 1.22 25826 455 $7.22 44
400W High Pressure Sodium High Bay 1 50000 81% 78% 1.00 31631 0.62 0.79 24906 464 $7.63 42
1000W Metal Halide High Bay 1 110000 45% 70% 1.00 36083 1.50 1.22 44192 1085 $5.70 56
1000W High Pressure Sodium High Bay 1 130000 45% 70% 1.00 40950 0.62 0.79 32244 1100 $1560 21
HBL-632-N-UPL
Narrow Distribution
(2) Electronic Plus Ballasts
(6) F32T8 32W T8 lamps 3100 lumens
Spacing criterion: (II) 1.3 x mounting
height, (⊥) 1.0 x mounting height
Efficiency 95.9%
Test Report: HBL632NUPL
HBL-632-W-UPL
Wide Distribution
(2) Electronic Plus Ballasts
(6) F32T8 32W lamps 3100 lumens
Spacing criterion: (II) 1.3 x mounting
height, (⊥) 1.3 x mounting height
Efficiency 90.5%
Test Report: HBL632WUPL.IES
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
113 113 113 113 104 104 104 99 99 99
103 98 93 89 90 87 84 86 83 81
93 85 78 72 78 73 69 75 70 66
85 74 66 60 69 62 57 66 60 56
77 66 57 50 61 54 49 58 52 47
71 58 50 43 55 47 42 52 46 41
66 53 44 38 49 42 37 47 41 36
61 48 39 33 45 38 33 43 37 32
57 44 35 30 41 34 29 40 33 29
53 40 32 27 38 31 26 37 30 26
50 37 29 24 35 28 24 34 28 24
4562 24.5 25.6
7330 39.4 41.1
12827 69.0 71.9
17094 91.9 95.8
17837 95.9 100.0
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
106 106 106 106 97 97 97 91 91 91
96 91 87 83 83 80 77 78 76 73
86 78 72 66 72 67 62 68 63 60
78 68 60 54 62 56 51 59 54 50
71 60 52 45 55 49 43 52 47 42
65 53 45 39 49 42 37 47 41 36
60 48 40 34 44 37 32 42 36 31
56 43 35 29 40 33 28 38 32 28
52 39 31 26 37 30 25 35 29 25
48 36 28 23 34 27 23 32 26 22
45 33 26 21 31 25 20 30 24 20
3714 20.0 22.1
6154 33.1 36.6
11290 60.7 67.1
15508 83.4 92.1
16834 90.5 100.0
HBL-832-M-UPL
Medium Distribution
(2) Electronic Ballasts
(8) F32T8 32W lamps 3100 lumens
Spacing criterion: (II) 1.3 x mounting
height, (⊥) 1.5 x mounting height
Efficiency 96.5%
Test Report: HBL832MUPL.IES
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
113 113 113 113 104 104 104 98 98 98
103 98 93 89 89 86 83 84 82 79
93 84 77 71 77 72 67 73 69 65
84 73 65 59 68 61 56 64 59 54
77 65 56 49 60 53 47 57 51 46
70 58 49 42 53 46 40 51 44 39
65 52 43 36 48 41 35 46 39 34
60 47 38 32 43 36 31 41 35 30
56 42 34 28 40 32 27 38 31 27
52 39 31 25 36 29 25 35 29 24
49 36 28 23 33 27 22 32 26 22
5330 21.5 22.3
9071 36.6 37.9
16597 66.9 69.3
22265 89.9 93.0
23941 96.5 100.0
HBL-832-N-UPL
Narrow Distribution
(2) Electronic Ballasts
(8) F32T8 32W lamps 3100 lumens
Spacing criterion: (II) 1.3 x mounting
height, (⊥) 1.0 x mounting height
Efficiency 95.0%
Test Report: HBL832NUPL.IES
C o ef f i ci e n ts o f U ti l i za t i on
Effective floor cavity reflectance 20%
rc 80% 50% 30%
rw 70 50 30 10 50 30 10 50 30 10
RCR
0
1
2
3
4
5
6
7
8
9
10
Z o na l L um e n S um m a ry
Zone Lumens %Lamp %Fixture
0-30
0-40
0-60
0-90
0-180
112 112 112 112 102 102 102 97 97 97
101 96 92 88 88 85 82 84 81 79
92 83 77 71 77 71 67 73 68 65
83 73 65 59 67 61 56 64 59 54
76 65 56 50 60 53 48 57 51 46
70 58 49 43 54 46 41 51 45 40
65 52 43 37 48 41 36 46 40 35
60 47 39 33 44 37 32 42 36 31
56 43 35 29 40 33 29 39 33 28
52 40 32 26 37 30 26 36 30 25
49 37 29 24 34 28 23 33 27 23
6045 24.4 25.7
9501 38.3 40.4
16429 66.2 69.7
22053 88.9 93.6
23561 95.0 100.0
Illuminance Levels (FC) & Watts Per Sq. Ft. (LPD)
Based on 100 ft. x 100 ft. Open Room
HBL632NUPL
Spacing
15 ft 20 ft 25 ft 30 ft
on Center Qty FC LPD Qty FC LPD Qty FC LPD Qty FC LPD
20 ft 49 68.0 1.08 25 34.8 0.55 16 22.3 0.35 12 16.7 0.26
25 ft 49 63.0 1.08 25 32.1 0.55 16 20.5 0.35 12 15.4 0.26
30 ft 49 58.0 1.08 25 29.7 0.55 16 19.0 0.35 12 14.2 0.26
Illuminance Estimator
Choose the spacing and mounting height to determine the average footcandle and
watts per square foot values. All the calculations are based on the published IESNA
Zonal Cavity Method and associated algorithms. Results are calculated from
manufacturer photometric files.
Mounting
Height