TERRALUX SR8 Spec Sheet - Manual (Page 3)

3
TERRALUX S
R
8 Product Specification – Subject to change without notice
WWW.TERRALUX.COM
8/07/2014
LEDSense ® Operation, Thermal De-rating and Lumen
The S
R
8 employs TERRALUX’s patented LEDSense ® Thermal Management Technology to
automatically provide maximum light output in various fixtures and operating conditions while
assuring long-term lumen maintenance. LED-Sense
® regularly measures the operating temperature
and ensures compliance with a pre-programmed temperature and drive-current profile. This profile
is based on the LED manufacturer’s LM-80 data report and minimum L70/60,000 hour lumen
maintenance curves. LEDSense
® is always active, and will compensate for variation in thermal
conditions due to heatsinking, ambient air, Engine positioning, or any other variable that affects the
operating temperature. The Thermal De-rating curve below identifies the relative light output that
can be expected under various thermal conditions. The LEDSense
® Power Curve identifies the
reduction in input power over temperature.
50%
60%
70%
80%
90%
100%
25
35
45
55
65
75
85
95
105
115
Re
laU
ve
L
ig
ht
O
utp
ut
Heat
Sink
Temperature
[°C]
Rela8ve
Light
Output
vs.
Temperature
50%
60%
70%
80%
90%
100%
25
35
45
55
65
75
85
95
105
115
Re
laU
ve
In
pu
t
P
ow
er
Heat
Sink
Temperature
[°C]
Rela8ve
Input
Power
vs.
Temperature