Analysis of light-scattering samples
Integrating sphere
SPECORD S600 accessories Edition 09/2014 97
20.3 Lamp replacement
Do not touch the halogen lamp with bare fingers. Contamination on the bulb will
impair the performance of the lamp. Wipe off any contamination with a soft cloth
moistened with pure alcohol or a similar substance.
The used quartz halogen lamp is powered with a voltage of 5 V and thus has an
expected lifetime of several hundred operating hours. If it should be necessary
to replace the lamp, follow this procedure:
1. Turn off the power supply. If the lamp just failed, wait about five minutes
until the bulb has cooled down. Otherwise, there is the risk of burns.
2. Loosen the two fastening screws (1, 4 in Fig. 20-5) that hold the lamp
holder.
3. Pull off the cooling block upward.
4. Remove the old lamp.
5. Take the new lamp from out of its packing, but do not remove the bulb
protective sleeve.
6. Put the new lamp into the lamp holder as far as it will go. Then, remove the
protective sleeve.
7. Reattach the cooling block and fasten it to the sphere body by means of the
two fastening screws.
8. Turn the power supply on again and let the lamp warm up for about five
minutes so that it reaches its operating temperature.
9. In general, a new lamp will have a higher light intensity than the old one.
Therefore, it is necessary to determine the integration time of the
SPECORD S 600 again with the new lamp.
Maintenance and Care
• In spite of all care it might be necessary to clean the mirrors, in particular
mirror 3. Only use dry, clean, i.e. oil-free compressed air or nitrogen for
this purpose.
• You can also clean the PTFE contact surfaces with a hair brush or dry,
clean compressed air, rinse with distilled water and then blow dry.
Stubborn contamination can be removed using ether, ethanol or
methanol or fine-grained sanding paper (grain size 220 – 240) and then
rinsed with distilled water and blown dry with compressed air.
• When cleaning standard samples always observe the manufacturer
instructions.
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