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LIOS EN.SURE is based on state of the art distributed temperature sensing (DTS) monitoring systems customised for the electrical T&D industry. One single EN.SURE evaluation unit provides fast temperature sensing profiles with high spatial resolution along the optical fibres route with monitoring ranges up to 40km per channel.

The LIOS‘ DTS technology has been successfully proven in critical applications like fire detection in road and rail tunnels and special hazard buildings, power cable and aerial transmission line monitoring, in oil & gas exploration for permanent downhole monitoring and for industrial induction furnaces surveillance, where these systems have been equipped in world-wide projects with more than 4500 permanent installations.

Most of these applications are safety relevant and require high reliability and uptime of the sensor system. The EN.SURE DTS product series was carefully designed and thoroughly tested targeting reliable performance and smooth operation in industrial environments. Excellent Mean-time-between-failures (MTBF) of  more than 30 years was reached based on the latest statistical field analysis of the current DTS product series.

Technical Highlights

  • Highly reliable industrial design with key components approved by the telecom industry (tested according to Telecordia standard GR-468, with medium lifetime >25 years)
  • Signal processing based on patented Raman OFDR-Technology (Optical Frequency Domain Reflectometry)
  • Superior hotspot detection along the whole sensor cable length even at most remote distances based on the invariant OFDR spatial resolution
  • Up to 16 internal fibre optic channels – 1 EN.SURE DTS unit can cover the most complex power cable circuits
  • Temperature resolution better than 1 °C
  • Laser product class 1M according to DIN EN 60825-1: 2007
  • Maintenance free and simplified outdoor installation capability through higher allowed
  • operating temperature range and fan-free DTS unit design
  • Impressive track record with more than 4500 permanent units installed worldwide
EN.SURE Power Cable Condition Monitoring Information

EN.SURE - Load Management, Optimization and Save Grid Operation

EN.SURE  is a continuous and cost-effective monitoring solution of the electric power transmission and distribution grid and is the key factor for a successful Smart Grid implementation.

EN.SURE DTS Brochure

EN.SURE Real Time Thermal Rating RTTR Brochure

» Technology behind Distributed Temperature Sensing

» LIOS sets benchmarks in reliability and track record