Photometric Data File Viewer
Following the the basic photometric performance for the product you selected.
For additional calculation capabilities, download this file and use a
lighting design software package such as Visual.
| TEST: | | LTL15352 | | DATE: | | 8/8/06 | | MANUFAC: | | LITHONIA/GOTHAM | | LUMCAT: | | DTH 20MT4 4 MEDIUM | | LUMINAIRE: | | 4" LENSED 20 WATT T4 DEDIUM DISTRIBUTION. SOCKET BRACKET ON FLAT PLUS 3 WASHERS (.06" EACH) | | LAMPCAT: | | CMH20/TC/U/830/G8.5 | | LAMP: | | ONE 20-WATT CLEAR T4 BI-PIN CERAMIC METAL HALIDE, VERTICAL POS. | | BALLAST: | | M2012-27CK-3DU-J |
| Number Lamps: | |
1 |
| Lumens Per Lamp: | |
1700 |
| Photometric Type: | |
Type C |
| Luminous Width: | |
-0.33 ft |
| Luminous Length: | |
-0.33 ft |
| Luminous Height: | |
0 ft |
| Ballast Factor: | |
1 |
| Input Watts: | |
24 |
| Efficiency (Total): | |
66.0 % |
| Efficiency (Up): | |
0.0 % |
| Efficiency (Down): | |
66.0 % |
| | Spacing Criteria | | | Angle | Value | | | All | 0.73 |
| |
Candela Values: |
| |
0 |
| 0 | | 1,534 | | 2.5 | | 1,529 | | 5 | | 1,516 | | 7.5 | | 1,505 | | 10 | | 1,489 | | 12.5 | | 1,445 | | 15 | | 1,351 | | 17.5 | | 1,209 | | 20 | | 1,032 | | 22.5 | | 851 | | 25 | | 681 | | 27.5 | | 527 | | 30 | | 401 | | 32.5 | | 304 | | 35 | | 234 | | 37.5 | | 182 | | 40 | | 143 | | 42.5 | | 116 | | 45 | | 122 | | 47.5 | | 112 | | 50 | | 70 | | 52.5 | | 50 | | 55 | | 39 | | 57.5 | | 29 | | 60 | | 23 | | 62.5 | | 18 | | 65 | | 14 | | 67.5 | | 12 | | 70 | | 10 | | 72.5 | | 8 | | 75 | | 6 | | 77.5 | | 5 | | 80 | | 4 | | 82.5 | | 4 | | 85 | | 3 | | 87.5 | | 1 | | 90 | | 0 |
| | Average Luminance (cd/sq.m) | | | 0 | 45 | 90 | | 55 | | 8,601 | 8,601 | 8,601 | | 65 | | 4,190 | 4,190 | 4,190 | | 75 | | 2,932 | 2,932 | 2,932 | | 85 | | 4,354 | 4,354 | 4,354 |
|