Teledyne 6650 - Fluorescence Probe - Oil in Water analysis system - Manual (Page 31)

UV-Photo-X Setup & Operation
Teledyne Analytical Instruments 23
Flashing Yellow Detector LED: there is not enough light striking
the detector.
Red detector LED: there is to much light intensity on the detector.
5.8.2 Rectifying the Problem: Flashing Yellow
Indicators
1) Verify that the lamp is emitting light.
a) Remove the fiber optic cable from the lamp launch
assembly.
b) Place a white piece of paper or business card in from
of the lamp launch assembly. The card will exhibit
either a bluish purple or reddish flashing spot when
operating properly.
c) If no flashing is occurring contact TIA for additional
instructions
d) If flashing is observed, reconnect the fiber optic
cable to the lamp launch assembly
2) Verify that the fiber optic cable is securely attached to lamp,
probe and analyzer.
3) If Steps 1 and 2 are not sufficient, then the probe must be
removed from the measurement location and checked for
cleanliness
a) Remove the fiber optic cables from the probe
b) Remove the probe from the measurement area
c) Visually examine the probe for deposits. NOTE: a
visual inspection will only detect gross deposits.
d) Clean the probe tip using a solvent known to remove
the process background material and the analyte of
interest. Gently rub the optical surface with a damp
lint free cloth or cotton swab to remove deposits.
e) Rinse the probe tip using spectroscopic grade
isopropyl alcohol (IPA or 2-propanol) or methanol
to remove residual cleaning solvent.