Umbilical’s and ROV specialty cables
Omnisens DITEST-LTM offers the possibility to measure ROV's umbilical power cables or similar specialty power cables in stringent conditions with high attenuation and through connecting devices such as rotary joints and connection accessories.
Subsea activities more and more frequently required the use of “work class” Remotely Operated Vehicles (ROV’s) for deep water trenching, cable burial, repair jobs and the recovery of larger objects.
As the operation of ROV’s is progressively moving down to increasing depth, the umbilical’s used to power and control the ROV’s are submitted to challenging conditions during deployment and operation.
Photo Credit : Hidden Ocean 2005 Expedition: NOAA Office of Ocean Exploration.
The monitoring of umbilical’s temperature is important to guarantee that they are not operated beyond their specifications and that local heating doesn’t damage the cable structure. Optical fibers integrated in the umbilical’s can be used to perform efficient monitoring provided that the monitoring system is able to cope rotary joints which introduce large varying attenuation.
Temperature Measurement for specialty or rov umbilical power cables
The DITEST-LTM distributed temperature monitoring system provides full temperature monitoring capabilities over long distances, while maintaining full monitoring performance even in presence of rotary joints.
