TTK FG-ODC Hydrocarbon Sense Cables

  • High Sensitivity
  • Very Fast Response with Light and Middle Distillates
  • Sensitive to Heavy Oils and Hydrocarbon Vapors
  • Leak Location on Section Length
  • Re-usable and Pre-connected Cable
  • Suitable for Explosive Area Service
  • Insensitive to Water and Inorganic Pollutants

TTK FG-ODC is a digital sense cable for the detection and location of liquid hydrocarbons and liquid insoluble in water and their vapors, along the entire length. It allows multiple leak detection and location thanks to independent digital addressing, enabled by an embedded microchip in each FG-ODC sense cable. The sensor element is optimized for a very fast response with light to middle distillates. It is sensitive to heavy oils such as conventional crude oils, dilbit/synbit, as well as to hydrocarbon vapors. Re-usable after leak detection. Can be installed in a humid environment, as it is insensitive to water and inorganic contamination.


  • Standard length (3 m, 7m and 12m) sensor sections or long line sections allowing optimised system architecture.
  • Microcontroller embedded in each FG-ODC sense cable allowing the independent digital transmission to the alarm unit.
  • Standard length sense cable provided with the built-in plug-socket connector.
  • Longline provided with built-in intermediate embedded connections (for each section), plus connector at extremities on demand. Structure of the sense cable comprising a silicon sensing wire, a continuity wire, a communication wire (proprietary bus) and the power supply wires.
  • Protective external PE braid built on the cable.
  • Intrinsically safe – can be used in classified areas: Ex ia IIB T4 Ga (IECEx “Zone 0”).


  • Reliable detection:
    – Sensitive to heavy oils and vapors.
    – Insensitive to water, inorganic pollutants, and external loads (pressure).
  • High sensitivity: examples of detection time: gasoline at 1-2 minutes (*), jet fuel at 4-10 minutes (*), diesel at 7-12 minutes (*), WTI: 20-35 minutes (*), Dilbit: 30-45 minutes (*).
  • Detects and locates hydrocarbon leaks on the section length.
  • Can be reused, allowing leak detection tests under real conditions. The same unit FG-NET can be connected to FG-ODC sense cables and mixed with water or acids/bases sense cables at the same time.
  • Easy to install and remove: standard FG-ODC cables pre-connected with male / female connectors.

Note (*): depending on liquid composition and leak conditions


Cable nominal diameter 10 mm
Connector nominal diameter 16 mm
Embedded (Long Line) connection nominal diameter 16 mm
Cable nominal weight (without connectors) 7 kg / 100m
Min. bending radius 100mm
Max. Pressure 3 bar
Min. Max. working temperature   -30°C ≤ Tamb ≤ +100°C
Reusable Yes
Direct burial Possible
Maximum tensile strength (incl. connection) 40 kg
Expected life span (at working conditions) > 10 years
Explosive area classification Ex ia IIB T4 Ga (ATEX “Zone 0”)
Connector protection index classification (DIN/EN/IEC60529) IP 68

Identification Codes

FG-ODC12 Addressable Oil Sensing Cable in 12m with Connectors
FG-ODC7 Addressable Oil Sensing Cable in 7m with Connectors
FG-ODC3 Addressable Oil Sensing Cable in 3m with Connectors
FG-ODCLxxyy/xxyy/xxyy Pre-Assembled Addressable Oil Sensing Cable with connectors
xx =length of sections, yy = number of sections
i.e.: FG-ODCL1204: Pre-assembled 4 lengths of cables FG-ODCL : 4 sections of 12m
FG-DOD KIT Kit including FG-DOD interface box + FG-CLOD leader cable + FG-TMOD end plug
FG-CLOD Leader Cable, on ‘OD Bus 8771’
FG-TMOD Digital End Plug on ‘OD Bus 8771’ for FG-ODR Cable
FG-NOD ‘N’ ‘OD Bus 8771’ Neutral Cable ‘N’ (30, 15, 7, 3, 1m) With Connectors
ES-OD 40 Tags for Oil Cable
CF-OD50 50 Hold-down Clips with adhesive for Oil Cables



TTK FG-ODC Hydrocarbon Sense Cables_DpstarGroup