Principle Of Operation - Hitachi CHROMASTER 5160 Instruction Manual

2.3.4 Principle of operation

Plane mirror
Xenon
lamp
Xenon lamp
starter
Xenon lamp
ballast
Excitation
monochromator
Measuring detector
Sample
fluorescence
amplifier
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.
Sample
Emission
monochromator
(Fluorescence
monochromator)
Photomultiplier high
voltage circuit
Operational
circuit
Recorder
or integrator
Electrical connection
Optical path
2 - 16
Diffusion plate
Monitor detector
Monitor detector
amplifier