2 - 16
2.3.4 Principle of operation
Fig. 2-11 Functional Block Diagram
The beam from the xenon lamp strikes the excitation
monochromator that disperses the radiation. Only radiation of
the specified wavelength is allowed to pass through the exit slit.
After the exit slit, the excitation radiation strikes the sample.
The fluorescence (emitted radiation) enters the emission
monochromator, where it is dispersed by the monochromator.
The selected radiation strikes the measuring detector.
On the other hand, the excitation beam which passed through
the sample enters the monitor detector via the diffusion plate.
Photomultiplier high
voltage circuit
Xenon lamp
starter
Recorder
or integrator
Xenon lamp
ballast
Xenon
lamp
Sample
fluorescence
amplifier
Electrical connection
Monitor detector
amplifier
Operational
circuit
Emission
monochromator
(Fluorescence
monochromator)
Excitation
monochromator
Sample
Diffusion plate
Monitor detector
Optical path
Measuring detector
Plane mirror
Summary of Contents for PRIMAIDE 1440
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