DTSX Fiber Optic Armoured LHD Cable


Key Features

  • Crush and tension resistant
  • Gel-filled stainless steel tube
  • Flame-retardant outer jacket
  • Wide temperature range -25° to +70°C
  • 2km to 8km lengths


DTSX Fiber Optic Cable is compatible for use with DTSX1 Fiber Optic linear heat detection systems. Available in lengths up to 8 kilometres long, the cable is steel armoured and features a gel-filled interior as well as a halogen-free and flame-retardant outer jacket. The fibre optic cable can withstand extreme temperatures ranging from -25° to +70°and allows vast expanses to be monitored for fire or fluctuating temperature conditions. 

The DTSX Fiber Optic Cable uses light scattering detection to identify changes in temperature (the Raman scattering principle) whereby pulses of light sent down the cable are monitored and measured for variances which indicate a change in temperature. The amount of light scattered back down the cable to the light source allows for accurate location of the alert condition.

Cable Construction

The glass fibre optic core of the DTSX cable is encased in a stainless steel tube filled with cushioning gel with a further layer of stainless steel wire, all sheathed in a black flame-retardant non-corrosive outer jacket.

The DTSX Fiber Optic Armoured LHD Cable is EN 54-22 compliant which ensures that it has met the specific requirements of European safety standards governing linear heat fire detection and fire alarm systems, giving confidence in the level of protection they provide from the risk of fire.


Tech Specs

Cable CoreGel-filled stainless steel tube with 2 optical fibres (G50/125)
Outer diameter: 1.8mm
Wall thickness: 0.2mm
Stainless steel wire
Diameter wire: 0.6mm
Number of wires: 12
Outer diameter: 3.0mm
Fibre colours: RedGreen
Outer JacketHalogen-free and flame-retardant material with approx. 0.65mm wall
Colour: black
Outer diameter approx. 4.0mm
Inkjet-marking: black
Application/InstallationFor fixed installation in cable ducts and in tubes
For flexible use as multi-patch cable in distribution systems
Ideal for pre-assembling
Mechanical CharacteristicsMin. bending radiusin use (static): 15 x outside diameter
during installation (dynamic): 20 x outside diameter
Max. tensile force, short term: 1000N
Max. tensile force, long term: 500N
Max. crush resistance, short term: 3000N/dm
Max. crush resistance, long term: 1500N/dm
Weight: 46kg/km
Thermal CharacteristicsTransport and storage: -25°C to +70°C
Installation: -5°C to +50°CIn use: -25°C to +70°C
Fire PerformanceFlame retardancy acc. to IE60332-1-2Smoke density acc. to to IEC61034Halogen- free acc. to IEC60754-1
Acidity of combustion gases acc. to IEC60754-2Fire Class according EN13501-6 B2ca-s1a, d0, a1
Circuit integrity 90 min. acc. to IEC60331-11 and -25
Max. change of attenuation3,0 dBVDE test report 241666-TL6-1Date of issue: 2018-01-15
StandardisationIEC60794-2EN50575:2014 + A1:2016
No. of Declaration of Performance CDERF0000031 – V3
PackagingDisposable drums


DTSX Fiber Optic Armoured LHD Cable Datasheet


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