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: | | LTL15017 | | DATE: | | 3/15/06 | | MANUFAC: | | GOTHAM | | LUMCAT: | | ATH 20MT4T 4 MEDIUM | | LUMINAIRE: | | 4" LENSED DOWNLIGHT 20WATT T4 TWIST LOCK MEDIUM DISTRIBUTION. FLAT SOCKET BRACKET ON DIMPLES, WITH .25" SPACER TO LOWER THE LAMP. | | LAMPCAT: | | CDM-TM 20W/830 | | LAMP: | | ONE 20-WATT CLEAR T4 TWIST LOCK METAL HALIDE, VERTICAL BASE UPPOS. | | BALLAST: | | ADVANCE |
| Number Lamps: | |
1 |
| Lumens Per Lamp: | |
1500 |
| Photometric Type: | |
Type C |
| Luminous Width: | |
-0.36 ft |
| Luminous Length: | |
-0.36 ft |
| Luminous Height: | |
0 ft |
| Ballast Factor: | |
1 |
| Input Watts: | |
24 |
| Efficiency (Total): | |
67.3 % |
| Efficiency (Up): | |
0.0 % |
| Efficiency (Down): | |
67.3 % |
| | Spacing Criteria | | | Angle | Value | | | All | 0.89 |
| |
Candela Values: |
| |
0 |
| 0 | | 1,135 | | 2.5 | | 1,108 | | 5 | | 1,056 | | 7.5 | | 1,020 | | 10 | | 1,015 | | 12.5 | | 1,030 | | 15 | | 1,037 | | 17.5 | | 1,014 | | 20 | | 936 | | 22.5 | | 826 | | 25 | | 711 | | 27.5 | | 613 | | 30 | | 533 | | 32.5 | | 461 | | 35 | | 386 | | 37.5 | | 299 | | 40 | | 204 | | 42.5 | | 119 | | 45 | | 64 | | 47.5 | | 26 | | 50 | | 8 | | 52.5 | | 3 | | 55 | | 2 | | 57.5 | | 2 | | 60 | | 1 | | 62.5 | | 1 | | 65 | | 1 | | 67.5 | | 1 | | 70 | | 1 | | 72.5 | | 0 | | 75 | | 1 | | 77.5 | | 0 | | 80 | | 0 | | 82.5 | | 0 | | 85 | | 0 | | 87.5 | | 0 | | 90 | | 0 |
| | Average Luminance (cd/sq.m) | | | 0 | 45 | 90 | | 55 | | 371 | 371 | 371 | | 65 | | 251 | 251 | 251 | | 75 | | 411 | 411 | 411 | | 85 | | 0 | 0 | 0 |
|