Gotham 12 AH Open Reflector SpecSheet User Manual
Page 3
© 2008-2013 Acuity Brands Lighting, Inc. All Rights Reserved. Rev. 07/01/13. Specifications subject to change without notice.
PAGE 3 OF 3
AH-12-OPEn
AH 250M 12AR
250W MS250/C/BU LAMP, 0.9 S/MH, 21500 RATED LUMENS, TEST NO. 2189060602P
PH
OTO
M
ET
RY
Distribution Curve
Distribution Data
Output Data
Coefficient of Utilization
Illuminance: Single Luminaire 30” Above Floor
12” AH
Open Reflector
Metal Halide Lamp
PHOTOMETRY NOTES
•
Tested to current IES and NEMA standards under stabilized laboratory condition.
•
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° Ave Lumens
0° 16033
5° 15993 1499
15° 14185 3876
25° 9466 4245
35° 4149 2630
45°
958
853
55°
72
102
65°
23
23
75°
1
5
85°
0
0
90°
0
Zone Lumens %lamp
0°-30° 9620.5 44.7
0°-40° 12250.7 57.0
0°-60° 13205.7 61.4
0°-90° 13233.5 61.6
90°-180° 0
0.0
0°-180°13233.5 61.6*
* Efficiency
50%
10%
beam angle 46.4° beam angle 74.9°
Initial fc
fc at
fc at
Mount at beam
Beam beam
Beam beam
height center
diameter edge
diameter edge
8'
530.0
4.7' 265.0
8.4' 53.0
10'
285.0
6.4' 142.5
11.5' 28.5
12'
177.7
8.2' 88.8
14.6' 17.8
14'
121.2
9.9' 60.6
17.6' 12.1
16'
88.0
11.6' 44.0
20.7'
8.8
ρ f
20%
ρc
80%
50%
30%
ρw 50% 30% 50% 30% 10% 50%
1 68 67 64 63 61 62
2 64 61 61 59 56 59
3 59 56 57 55 52 55
4 56 52 54 51 48 52
5 52 49 50 48 45 49
6 49 45 48 45 42 47
7 46 42 45 42 39 44
8 44 40 42 39 37 42
9 41 38 40 37 35 40
10 39 35 38 35 33 38
90°
45°
0°
3200
6400
9600
12800
16000