relative luminous flux %
Application hints
Luminous flux temperature curve
As for all fluorescent lamps, the lamp’s
luminous flux temperature-dependent.
Adding amalgam mercury compound)
makes possible compensate for the
decrease luminous flux relatively high
and low temperatures.
Amalgam technology
Special T16-I lamps with amalgam technology
are available order ensure that the
luminous flux slightly less temperature
dependent.97
The Lighting Handbook
%
100
80
60
40
20
0
-10 20
10 °C
T16-I (amalgam lamp)
Relative luminous flux %
Min.
The rated luminous flux generally speci-
fied for ambient temperature 25°C. Thus luminaire
efficiencies may have levels greater than “1”. The T16
basically follows the same curve the
T26, but the maximum occurs not an
ambient temperature 25°C but at
about 35°C. The
maximum value obtained optimum
ambient temperature, with losses increasing
at higher and lower temperatures.
For the T16, the maximum value therefore
lies above this rated value.
%
100
80
60
40
20
T26 W
T16
T26 W
-20 °C
Ambient temperature
(dashed line)
Luminous
flux
Ambient temperature
Luminous
flux
T16 fluorescent lamps
In comparison with thicker T26 lamps (dia
meter: mm), modern T16 lamps (diameter:
16 mm) show several different properties that
must taken into account for application.
.
Reason: the cool spot T16 not located
in the centre the lamp, but typically at
one end the tube where the manufacturer
has fixed its seal
