Maintenance
10.4 Replacing the Fiber Optic Cable
FA fiber cable assemblies are not field ʺreplaceableʺ without blackbody recalibration! As such, spare FA fiber cable assemblies are not available!
If the fiber optic cable ever needs to be removed or replaced, it can be removed from both the optical head and electronics enclosure without demounting them from their brackets.
Please be aware of the following when removing or installing cables:
•Make sure cable connectors at the sensing head and electronics enclosure are clean before removing and/or replacing the fiber optic cable.
•Replacement fiber optic cables of the same length can be recalibrated in the field by using the supplied Fiber Replacement Calibration software. Replacement fiber optic cables of different lengths require recalibration at the factory, or at a factory‐authorized service center. Contact your sales representative for details.
Always clean the area around the fiber optic cable connectors before disconnecting. If any contaminants get into the open connectors, the sensor’s accuracy will be compromised. After removing the cable, or before installing a new cable, the ends must be protected at all times until connected to the sensing head and electronics enclosure. Cables are shipped with protective end caps. Always save these caps for use whenever the fiber optic cable must be disconnected. Any contamination to the fiber optic cable ends will degrade performance. To replace the fiber optic cable, you will need to disconnect it from both the optical head and the electronics enclosure. The following instructions will guide you through the process.
10.4.1 Removing the Fiber Optic Cable
10.4.1.1 Removing the Fiber Optic Cable from the Optical Head
Complete the following steps to disconnect the fiber optic cable from the optical head:
1.Thoroughly clean the area around the optical head.
2.Insert a 1.3 mm (0.050”) hex wrench into the optical head’s hex screw and turn counter clockwise until the cable is loose.
3.Draw the fiber optic cable out of the optical head.
4.Important – If you plan to reconnect the same cable, immediately cover the end with a slip‐on end cap to prevent contamination. Do not use any adhesive tape over the cable end.
Marathon Series FA/FR | 49 |
