Galvanic Applied Sciences 943-TGX-CE, Руководство по эксплуатации

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Revision 4 110 April 2020
7.3 Testing and Replacement of the Optical Fibres
When a High Integration Period warning is present, and the anti-solarant solution has been
replaced following the procedure in Section 6.3 within the last 30 days, one of the possible
causes of this warning is that one or both of the optical fibres have been damaged and are not
able to transmit ultraviolet radiation normally. To eliminate or confirm the fibres as the source of
the high integration period, they can be tested as a pair or, if necessary, individually to observe
their transmission characteristics .
The fibre optic cables will generally only require change-out if they suffer from mechanical
damage or if they have been exposed directly to short wavelength ultraviolet radiation for
prolonged time periods, as when the anti-solarant replacement schedule is inadequate.
The fibre optic cable ends terminate into SMA type connectors and are intended to be installed
with the seal body installed in the inter-cabinet seal fittings that connect the oven cabinet and
the control cabinet. There are two cables. The shorter of the two fibres connects the UV Source
Lamp in the control cabinet to the top side of the measurement cell in the oven cabinet. The
longer of the two fibres connects the Spectrometer in the control cabinet to the bottom side of
the measurement cell in the oven cabinet.
The SMA connectors only need to be finger-tight. Do not overtighten the connectors
as this may damage the cable.
If the anti-solarant solution has not been changed within the last 30 days as per the procedure
in Section 6.3, proceed with that procedure first and confirm that the
High Integration Period
warning is still present after completion BEFORE proceeding with the fibre test procedure. To
test the optical fibres, and replace if necessary, follow the procedure below.
1. Place the analyzer in Offline mode by toggling the Online / Offline control toggle
(Section 4.3.1) on the Analysis 2 panel to Offline (red).
2. Place the analyzer in back purge mode by pressing the F6 key on the keypad OR by
placing the X in the Back Purge check box on the Analysis 1 panel.
3. Access the purged control cabinet following proper user company and/or regulatory
agency procedure.
The control cabinet door may NOT be opened while the analyzer is
energized UNLESS the area is known to be non-hazardous. Observe all the
warning labels on the analyzer enclosures. To open the control cabinet door
while the analyzer is energized, the purge controller box must first be
bypassed. Refer to Section 3.3.
DO NOT look at the end of disconnected fibres connected to the UV lamp or
place them in contact with skin. The intense UV radiation transmitted
through these fibres can cause eye and skin damage. Fibres should be
capped immediately after disconnection to prevent acidental exposure to
UV radiation.
4. Turn the oven heaters off by locating the Heater AC Power fuse terminal on terminal
block ACTS:25. Lift the fuse terminal tab opening the terminal block and thus
disconnecting the Heater AC Power fuse, as shown in Figure 71.