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Appendix
the optical surface. This insures that each sample is tested
without fouling of the optical surface. This step is not possible in
the pilot system.
5) In sequence measure the fluorescence from each of the process
samples. Make sure to wait 2 minutes after placing the probe in
contact with the solution before recording the fluorescence
reading. Make sure to clean the probe tip after each sample.
6) If none of the samples off scales the unit (a 1 on the display in
the fourth digit), then using the data obtained plot the
fluorescence intensity versus analyte concentration for the data.
Determine the linearity of the output response and a possible
calibration sample.
7) If one or more samples off scaled the unit (a 1 on the display in
the fourth digit), then additional application engineering
sequences are required. Most likely a Mode 1 initialization study,
with the highest on scale sample used as the calibration sample.
The initialization sequence for Mode 1 is located in Section 5.
8) Once the process fluorescence has been characterized and the
calibration procedure determined repeat the experimental series
using the desired initialization mode to verify that the correct
monitoring approach has been selected.
Teledyne Analytical Instruments
34
Model 6650
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