
GE LIGHTING - ENTERTAINMENT LIGHTING CATALOGUE
109
Operating Temperature of Discharge Studio Lamps
The following maximum and minimum temperatures are suggested for optimum life. Operation
outside of these figures will not necessarily cause immediate failure but will effect life adversely to
an increasing extent.
Cap/bulb interface capsule lamps - 450° maximum
Above this figure the sealing foil oxidises at a rate increasing with temperature and is frequently the
cause of short life due to seal failure.
Bulb
capsule lamps 700° - 1000°C
sealed beam lamps 150° - 400°C
Above 1000°C, quartz may devitrify, which will cause the arc tube to leak, loss of dose will cause the
arc tube to operate below the minimum temperature, the metal halides will not vaporise as required,
and lamp performance will be impaired.
GE S&S 2000 9/03/00 9/3/00 1:32 pm Page 111
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