Philips T5VHO manual Lumen output curves, Lumen maintenance

Lumen output —T5 Extreme Temperature lamp
	105
	100
(%)	95
Output	90
	85
Light	80
Relative	75
	70
	65
	60
	0˚C	10˚C	20˚C	30˚C	40˚C	50˚C	60˚C	70˚C	80˚C
	32˚F	50˚F	68˚F	86˚F	104˚F	122˚F	140˚F	158˚F	176˚F
				Ambient Temperature ˚C
					(˚F)
		Standard F54 T5 HO Lamps
		T5 Extreme Temperature Lamps

Figure 3.1. Relative light output of a T5 Extreme Temperature lamp in relation to the lamp ambient temperature

Run-up curve — T5 Extreme Temperature

Figure 3.2.Typical run-up curve of a T5

Extreme Temperature lamp

Lumen maintenance — T5 Extreme Temperature

	100%
	98%
	96%
(%)	94%
OutputLight	92%

90%

88%

0 5,000 10,000 15,000 20,000 25,000 30,000 35,000

Lamp Operating Hours

Figure 3.3. Lumen maintenance of T5 Extreme Temperature lamps

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 Extreme Temperature lamp is shown.

Lumen maintenance

The lumen maintenance of T5 Extreme Temperature lamps will be at 90% at 40% of rated average life. See figure 3.3.

OEM Design Guide Philips T5 VHO and HO Extreme Temperature Lamps and Ballasts 9