Teledyne 6600 manual 1.2Optical Bench, 1-2Part, Operational Theory, Model

1 Operational Theory Model 6600

1.2Optical Bench

Depending on the application, the analyzer comes with one of the following types of lamps: Deuterium (D), Quartz Iodine (L), or Mercury (Hg). Energy from the lamp, used as a source, is focused through a sample cell onto a photo detector. In front of the detector is a motor-driven filter disc containing two optical filters mounted 180 degrees apart that alternately and continuously rotate into and out of the light beam. Sample flows continuously through the sample cell and absorbs optical energy at various wavelengths depending on its composition.

The analyzer monitors two wavelengths: a measuring wave- length selected where the component of interest has a characteristic absorption peak and a reference wavelength that provides stability by compensating for extraneous phenomena such as turbidity, cell window deposits, unequal optical component aging, etc.

Shown with an Integral General Purpose Control and

Analysis Unit with external folded optical bench and

Sample Cell

1-2 Part II Teledyne Analytical Instruments