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4922 Views 0 Replies Latest reply: Mar 10, 2012 4:46 PM by NancyVill RSS
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Mar 10, 2012 4:46 PM

Emitter and Detector Setup



I have a question about how to build the setup shown in the attached diagram.  In the cuvette, there is an aqueous solution of two pigments, one absorbing at ~660 nm, and the other at ~940 nm.  The concentration of both pigments in the cuvette will be varied (100 uM, 200 uM, etc), and I would like to measure the transmitted light that reaches the detector.


What electronic components and configuration would be most suited for this application?  I am thinking of using the PDB-C171SMDKR-ND photodiode for the detector (both wavelengths), together with the 67-1647-ND (660nm) and 751-1203-ND (940nm) LEDs for emitters.  I am fairly new to this, and would greatly appreciate any information on how to construct this system.


Thank you,




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