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Changing the Lamp
The detector accepts two light sources: a deuterium lamp (for
wavelengths in the range 190-380 nm) and a tungsten lamp (for
wavelengths in the range 380-800 nm). If your detector was
ordered for operation in the visible spectrum, the tungsten lamp
is installed. If you ordered your detector in the standard
configuration, it is equipped with the D2 lamp. Only one lamp
can be mounted in the instrument at a time. Consequently,
moving from the UV to the visible requires the removal of the D2
lamp and installation of the tungsten lamp. All lamp assemblies
are pre-aligned and no further alignment is necessary when
changing from one lamp to another.
Figure 11: Lamp Assemblies (A: Deuterium, B: Tungsten)
Deuterium (D2) Lamp
The Deuterium Lamp is rated for 1,000 hours of life to 1/2 the
original intensity. This does not mean that the lamp will burn out
after 1,000 hours, merely that its intensity will be reduced to 50%
of its original output. Each D2 lamp assembly is equipped with a
Summary of Contents for ProStar 340
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