Metrohm 887 Professional UV/VIS Detector - Manual (Page 35)

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887 Professional UV/VIS Detector ￭￭￭￭￭￭￭￭ 27
6.3 Replacing the UV lamp
After a certain burning time, the radiation of the UV lamp starts to
decrease, which can be noticed by an increased noise on the baseline.
Check the effective burning time on the operating hours counter fixed to
the cable of the lamp. This counter measures the effective hours of opera-
tion and displays them on a scale.
0 2000 HOURS
Figure 10 Operating hours counter
The UV lamp must be replaced if the noise on the baseline becomes too
strong or when the lamp does not ignite.
1
2
3
4
5
Figure 11 Lamp module
1 Lamp cooling element 2 VIS lamp holder
3 VIS lamp
Halogen lamp (6.2804.100) 4 UV lamp
Deuterium-Lamp (6.2804.060) with operat-
ing hours counter.
5 Fastening ring
For UV lamp.
To replace the UV lamp, proceed as follows: