Technical notes

DITEST LTM-DTS - Long range distributed Temperature Monitoring

DITEST LTM-DTS - features & benefits

DITEST LTM-DTS provides long distance temperature monitoring capabilities with no compromising on performance.
DITEST LTM Long distance temperature monitoring Features
  • Continuous analysis of very small variations in temperature along the entire infrastructure.
  • Early detection and classification of alerts along the infrastructure.
  • Localization along the fiber optic with meter accuracy.
  • Configuration of Zones with associated alarms and relays activation
  • Fiber optic configuration and calibration according to installation parameters
  • Data management, system interfacing
  • Communication interface with third party’ systems (SCADA, ....)


Omnisens LTM provides the ideal solution for:

Power industry
Civil engineering

DITEST LTM-DTS - system Components

DITEST Interrogator

DITEST interogator


  • Monitoring distance : > 65 km per sensing channel
    (2 std channels for each interogator)
  • Spatial resolution : ~1 m (*)
  • Temperature resolution : < 0.5°C (*)
  • Optical loss budget : >14 dB (*)

(*) Temperature resolution, spatial resolution, distance range and acquisition time are inter-related. Please contact us with specific project requirements for more information about performance.

Temperature detection - fiber optic cable

Fiber Optic sensor

Long range Distributed temperature Optical Fiber Cable
The LTM OFC can accommodate up to 8 fibers. It is a robust cable suitable for direct burial as it integrates rodent protection. The cable includes the optical fibers used for temperature monitoring as well as spare fibers for data communication between the instruments and the control room.

Project Engineering

In each project, Omnisens in collaboration with its solution providers offers project management, specific design specifications with respect to project requirements, complete documentation and implementation plan, installation drawings, training, commissioning and deployment capabilities.

Additional System components

Depending on the project requirements, cabinet, uninterrupted power supplies, batteries, patch panels,
SO-N-2 optical switch modules, data server, can be provided as additional system components.