GOTHAM ARCHITECTURAL DOWNLIGHTING | 1400 Lester Road Conyers GA 30012 | P 800.315.4982 | gothamlighting.com
© 2007-2014 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 01/21/14. Specifications subject to change without notice.
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AF-10-OPEN-DTT
AF 3/18DTT 10AR
(3) 18W PL-C/27K LAMP, 1.5 S/MH, 3750 RATED LUMENS, TEST NO. 2194051702
AF 3/26DTT 10AR
(3) 26W PL-C 26W/27 LAMP, 1.5 S/MH, 5400 RATED LUMENS, TEST NO. 2195053103
PHOTOMETRY
Distribution Curve Distribution Data Output Data Coefficient of Utilization Illuminance: Single Luminaire 30” Above Floor
10” AF
Open Reflector
Horizontal Lamp, Double Twin-Tube
PHOTOMETRY NOTES
• Tested to current IES and NEMA standards under stabilized laboratory conditions.
• Actual performance may differ as a result of end-user environment and application.
• Consult factory or IES file for microgroove baffle, black cone or other photometric reports.
From 0° cp. Lumens
0° 1348
5° 1325 127
15° 1272 363
25° 1246 577
35° 1131 701
45° 639 475
55° 47 65
65° 23
75° 11
85° 01
90° 0
Zone Lumens%lamp
0°–30° 1064 28.40
0°–40° 1765 47.07
0°–60° 2303 61.43
0°–90° 2306 61.51
90°–180° 0 0.0
0°–180° 2306 61.51*
*Efficiency
ρ c80% 70% 50%
ρw50% 30% 50% 30%50% 30%
1686667656463
2636162606058
3585558555654
4545154515249
5504650464945
6474346424542
7433942394138
8393539353835
9363236323531
10 33 29 33 29 32 28
50
0%
beam angle 66.7° beam angle 94.0
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 44.6 7.2' 22.3 11.8
.5
10' 24.0 9.9'12.016.1' 2.4
12' 14.9 12.5' 7.520.4' 1.5
14' 10.2 15.1' 5.124.6' 1.0
16' 7.4 17.8' 3.7 28.9
.7
45°
90°
300
600
900
From 0° cp. Lumens
0° 1717
5° 1728 165
15° 1744 496
25° 1741 803
35° 1575 977
45° 960 704
55° 74 107
65° 12
75° 01
85° 01
90° 0
Zone Lumens%lamp
0°–30° 1462 27.08
0°–40° 2438 45.15
0°–60° 3248 60.16
0°–90° 3250 60.19
90°–180° 0 0.0
0°–180° 3250 60.19*
*Efficiency
ρ c80% 70% 50%
ρw50% 30% 50% 30%50% 30%
1666565646362
2625961585957
3575456535552
4534952495148
5494548454744
6454145414440
7413741374037
8383437343733
9353134303430
10 32 28 31 28 31 27
50
0%
beam angle 69.9° beam angle 96.7
Initial fc fc at fc at
Mount at beam Beam beam Beam beam
height center diameter edge diameter edge
8' 56.8 7.7' 28.4 12.1
.7
10' 30.5 10.6' 15.3 16.5' 3.1
12' 19.0 13.4' 9.520.9' 1.9
14' 13.0 16.2' 6.525.3' 1.3
16' 9.4 19.0' 4.7 29.7
.9
45°
90°
400
800
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