Figure 3.1. Relative light output of aT5 Extreme
Temperature lamp in relation to the lamp
ambient temperature
Figure 3.2.Typical run-up curve of aT5
ExtremeTemperature lamp
Figure 3.3.Lumen maintenance ofT5 Extreme
Temperature lamps
Run-up curve—T5 ExtremeTemperature
Lumen output—T5 ExtremeTemperature lamp
Lumen maintenance—T5 ExtremeTemperature
Lumen output curves
In figure 3.1., the relative light output of a typical T5 Extreme
Temperature lamp in relation to the lamp ambient temperature is
shown.The light output is more than 90% between 65°F and 170°F.
Run-up curves
In order to secure a fast run-up of the lamps, they are equipped
with auxiliary amalgams at both ends of the lamp.The auxiliary
amalgam increases the mercury vapor pressure after ignition of the
lamp. Within 3 minutes the lamp will reach 80% of its final output.
In figure 3.2. a typical run-up curve of a T5 ExtremeTemperature
lamp is shown.
Lumen maintenance
The lumen maintenance ofT5 ExtremeTemperature lamps will
be at 90% at 40% of rated average life. See figure 3.3.
32˚F 50˚F 68˚F 86˚F 104˚F 122˚F 140˚F 158˚F 176˚F32˚F 50˚F 68˚F 86˚F 104˚F 122˚F 140˚F 158˚F 176˚F
0˚C 10˚C 20˚C 30˚C 40˚C 50˚C 60˚C 70˚C 80˚C0˚C 10˚C 20˚C 30˚C 40˚C 50˚C 60˚C 70˚C 80˚C
105
100
95
90
85
80
75
70
65
60
105
100
95
90
85
80
75
70
65
60
AmbientTemperature ˚C
(˚F)
AmbientTemperature ˚C
(˚F)
Relative Light Output (%)Relative Light Output (%)
Standard F54T5 HO Lamps
T5 ExtremeTemperature Lamps
0 5,000 10,000 15,000 20,000 25,000 30,000 35,0000 5,000 10,000 15,000 20,000 25,000 30,000 35,000
100%
98%
96%
94%
92%
90%
88%
100%
98%
96%
94%
92%
90%
88%
Lamp Operating HoursLamp Operating Hours
Light Output (%)Light Output (%)
OEM Design Guide PhilipsT5VHO and HO ExtremeTemperature Lamps and Ballasts 9
