Galvanic Applied Sciences 943-TGX-CE, Operation Manual

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Revision 4 112 April 2020
significantly different from the factory reference spectrum, it will be necessary to test
the fibres individually. Continue to Step 12.
12. Loosen the two inter-cabinet seal fittings through which the fibres pass from the oven
cabinet into the control cabinet and unscrew the retaining caps. Lift out the plastic
retainers and pull gently outward on the cable and rubber seal plug until free from the
fitting.
Be careful that the ends of the Fibre Optic Cables do not become abraded
by contact with other surfaces. Installing a protective plastic cap onto the
end of the fibre is recommended.
13. Disconnect the fibre optic cables from the UV Lamp enclosure and the spectrometer
by unscrewing the nuts and pulling the fibre optic cables out. The cables can then be
pulled out through the cabinet seal fittings.
14. Connect one cable directly from the UV lamp enclosure to the spectrometer. Repeat
steps 9 and 10 for this cable. Observe the integration time and the shape of the
spectrum. If the integration time <50 milliseconds AND the peak shape is similar to the
factory reference, the cable is good and does not require replacement. If the integration
time >100 milliseconds OR the peak shape is significantly different from the factory
reference spectrum, the cable should be replaced.
15. Repeat step 15 for the other fibre optic cable.
16. If both fibre optic cables are found to be good, and the UV lamp was last replaced <6
months ago, the High Integration Period warning is likely due to dirty measurement
cell windows. Refer to Section 7.5 for cleaning / replacement procedure. If at least one
cable is found to require replacement, obtain the necessary replacement(s) and then
continue with this procedure.
17. Slide the short (source) fibre optic cable through the seal retaining cap, the rubber seal,
and the fitting for the bottom inter-cabinet seal fitting, ensuring that the seal body on
the fibre optic cable is closer to the control cabinet end. Connect the end of the fibre to
the SMA fitting on the UV Lamp power supply and hand tighten the nut. Tighten the
seal fitting.
18. Slide the long (detector) fibre optic cable through the seal retaining cap, the rubber
seal, and the fitting for the top inter-cabinet seal fitting, ensuring that the seal body on
the fibre optic cable is closer to the control cabinet end. Connect the end of the fibre to
the SMA fitting on the spectrometer and hand tighten the nut. Tighten the seal fitting.
19. Route the fibres into the oven, making sure that the fibres are routed in the indents to
avoid damage when the oven enclosure cover is secure.
20. Connect the short fibre to the SMA fitting on the top of the measurement cell. Connect
the long fibre to the SMA fitting on the bottom of the measurement cell. Hand tighten
the nuts.
21. Loosen the set screw holding the SMA Fittings into the measurement cell slightly so
that the SMA fitting can rotate and slide in and out.