TUV optics assembly light path

The TUV detector employs an extremely efficient design for exceptionally high light throughput.

The TUV detector operates as follows:

1. A mirror collects light from the lamp and focuses it through the filter wheel and onto the entrance slit. Another mirror directs light toward the grating, while a different portion of this mirror focuses dispersed light of a particular wavelength band, determined by the grating angle, onto the entrance of the flow cell. Light exits the flow cell to the sample photodiode.
2. The beam splitter, located just ahead of the flow cell, diverts a portion of the light to a reference photodiode.
3. When you specify a new wavelength through the system's touchscreen (or through the Empower software), the detector rotates the grating to the appropriate position.
4. The currents from the photodiodes are integrated and digitized for processing by the signal processing electronics and output to a computer or integrator.