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Product

fiber optic cable seriesIEC 61757-1-1 DSSØ 3.2 mm MonolithicSurface & Composite Bond

BRUsens DSS V1 Distributed Strain Sensing Fibre Optic CableCompact Ø 3.2 mm monolithic nylon-bonded distributed strain sensing fibre cable

BRUsens DSS V1 Distributed Strain Sensing Fibre Optic Cable with a monolithic polyamide-extruded sensing core that bonds directly to composite laminates, steel girders, concrete surfaces and wind turbine blades for high-resolution.

Structural Surface Bond
Epoxy & Grout Compatible
Zero-Slip Monolithic
IEC 61757-1-1
Order designation
BRUsens DSS V1-01SM-PA
Outer Ø
3.2 mm
Weight ≈
11 kg/km
Max. tensile load
350 N
Min. bend radius
15 mm
All sizes (3)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Sensing mode
OFDR / BOTDA
Rayleigh & Brillouin strain
Outer Ø
3.2 mm ± 0.1 mm
Ultra-low-profile monolithic
Strain range
±15,000 µε
High-proof-test 200 kpsi core
Bend radius
15 mm static
ITU-T G.657.A2 bend-insensitive
Weight
11 kg/km
Minimal structural mass loading
Temperature
-40 to +85 °C
Structural health monitoring

Typical values for this cable type, based on IEC 61757-1-1 / IEC 60794-1-21 / ITU-T G.657.A1 — confirmed in the datasheet and quotation for your order.

Application fit

Is BRUsens DSS V1 right for your machine?

Engineered for direct epoxy bonding onto steel bridges, concrete beams, composite wind blades and aerospace structures where heavy armoured cables would add excessive stiffness.

Fixed installation

Suitable

Direct cyanoacrylate/epoxy surface bonding or shallow slot-grouting on steel, concrete and CFRP structures.

TBM gantry & advancing tunnel reel

Suitable

Surface-mounted hoop strain profiling across precast concrete tunnel rings and masonry arches.

Immersion & wet locations

Suitable

Hydrolysis-resistant Polyamide 12 outer jacket withstands damp concrete and marine humidity.

Energy chain / drag chain

Not suitable

Static structural strain sensor designed to be bonded in place; not for cable drag chains.

Use HITRONIC PCF DUPLEX
Typical machinesBridge Girder & Concrete Crack DetectionWind Turbine Blade & Tower SHMPipeline Hoop & Bending StrainAerospace & CFRP Composite TestingNuclear Containment & LNG Tank Monitoring

Construction

Layer by layer

BRUsens DSS V1 showing a 200 kpsi bend-insensitive G.657.A2 optical fibre chemically and mechanically locked inside a monolithic co-extruded polyamide elastomer/PA12 jacket.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1High-strength strain sensing fibreITU-T G.657.A1 / G.657.A2 single-mode silica fibre (200 kpsi proof-tested) with high-adhesion primary coatingSupports up to ±15,000 µε (1.5 %) elongation without break
2Intermediate strain-transfer bufferCross-linked thermoplastic elastomer tightly co-extruded onto the primary fibre coatingShear-locks the optical fibre with < 0.5 % strain lag
3Dielectric aramid micro-reinforcementIntegrated longitudinal aramid micro-filaments embedded in the polymer matrixPrevents handling snap while keeping axial stiffness low (EA ≈ 18 kN)
4Surface-bondable PA12 outer jacketMatte-finish Polyamide 12 (PA12) or halogen-free LSZH engineered for structural epoxy adhesionØ 3.2 mm smooth or micro-textured surface

BRUsens DSS V1-01SM (Ø 3.2 mm)

Single-fibre monolithic PA12 strain sensor for surface epoxy bonding and composite embedment

BRUsens DSS V1-02SM Duplex

2 × strain-locked SM fibres in Ø 3.6 mm monolithic PA12 for redundant loop BOTDA interrogation

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC 61757-1-1 / IEC 60794-1-21 / ITU-T G.657.A1. Values for your order are confirmed in the datasheet and quotation.

Electrical

Sensing principle
Rayleigh OFDR (mm-scale) & Brillouin BOTDA/BOTDR
Strain sensitivity
0.0498 MHz / µε (Brillouin) · 1.20 pm / µε (Rayleigh)
Dielectric rating
100 % metal-free non-conductive sensor

Thermal

Operating temperature
-40 °C to +85 °C
Short-term curing peak
Up to +110 °C during composite autoclave/epoxy cure
Installation temperature
-15 °C to +60 °C

Mechanical

Operating strain range
-15,000 µε to +15,000 µε (±1.5 %)
Axial stiffness (EA)
≈ 18 kN (will not reinforce thin host substrates)
Max. tensile load
350 N (installation) · 200 N (continuous)
Crush resistance
1,500 N / 100 mm
Min. bend radius
15 mm (static) · 30 mm (installation)

Optical

Fibre grade
ITU-T G.657.A2 bend-insensitive SM (200 kpsi)
Attenuation @ 1550 nm
≤ 0.25 dB/km
Attenuation @ 1310 nm
≤ 0.38 dB/km

Resistance

Adhesive compatibility
Bonds with epoxy, polyurethane, cyanoacrylate & grout
Chemical & alkaline
PA12 resists concrete pore water (pH 13), oils & fuels
Flame option
Halogen-free LSZH variant per IEC 60332-1-2

Reference standards

Strain sensor standard
IEC 61757-1-1 Distributed Strain Measurement
Optical fibre standard
ITU-T G.657.A2 & IEC 60793-2-50
RoHS & REACH
2011/65/EU & EC 1907/2006 compliant

Identification

Outer sheath colour
Blue or Black matte Polyamide 12
Sheath marking
TEBAOFLEX BRUSENS DSS V1 STRAIN SENSOR <METRE>
Customs tariff (HS)
8544.7000

Sizes

3 standard BRUsens DSS V1 monolithic strain sensor models

Dimensional, axial stiffness and strain range data for DSS V1 surface and embedded strain sensing cables.

Dimensions & mechanical stiffness
Order designationSensing fibres & jacketOuter Ø
mm		Weight ≈
kg/km		Max. load
N		Min. bend R
mm		Enquiry
DSS V1 Monolithic Low-Stiffness Strain Sensors
BRUsens DSS V1-01SM-PA1 × G.657.A2 SM · PA123.21135015
BRUsens DSS V1-02SM-PA2 × G.657.A2 SM · PA123.61445018
BRUsens DSS V1-02SM-LSZH2 × G.657.A2 SM · LSZH3.61640018
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Low axial stiffness (EA ≈ 18 kN) ensures accurate strain transfer on thin composite, steel or concrete members without local reinforcement.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
100 % OTDR & 200 kpsi fibre proof checkα ≤ 0.25 dB/km @ 1550 nm and zero micro-bend anomaliesEvery spool length
Sample tests
Strain transfer factor & bond shear test≥ 99 % strain transfer efficiency up to ±15,000 µε in epoxy bondType qualification
Tight bend loss test (R = 15 mm)Induced attenuation ≤ 0.05 dB at 1550 nm after 10 turns @ R=15 mmType qualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

IEC 61757-1-1 Distributed StrainITU-T G.657.A2 Bend-InsensitiveRoHS 2 & REACH Compliant

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX BRUSENS DSS V1 MONOLITHIC STRAIN SENSOR
Delivery form
Fumigated export wooden or steel drums
Standard drum lengths
1000 m · 2000 m · 4000 m (or custom cut lengths)
MOQ
500 m (standard) · 1000 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFBRUsens DSS V1 Distributed Strain Sensing Fibre Optic Cable – technical datasheet3 sizes · construction, technical data, approvalsXLSXBRUsens DSS V1 spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

When should we choose BRUsens DSS V1 instead of the structured DSS V3/V4/V9 or armoured BSSH V13?
Choose DSS V1 (Ø 3.2 mm, low axial stiffness EA ≈ 18 kN) when bonding the sensor onto structural surfaces (steel beams, bridge decks, pipelines, CFRP blades) where a stiff metallic cable would resist deformation. For direct cast-in concrete or soil anchors, use structured DSS V3/V4/V9 or heavy-duty BSSH V13.
Why is ITU-T G.657.A2 fibre used inside BRUsens DSS V1?
Structural surface routing often requires tight 90° turns around gusset plates, flanges and rebar corners. G.657.A2 fibre allows a 15 mm static bend radius without optical macro-bending loss that would otherwise blind a Brillouin or OFDR interrogator.
What adhesives are recommended for bonding DSS V1 to steel or concrete?
The matte PA12 outer jacket is surface-treated for two-part structural epoxies (such as Araldite 2011 / Sikadur-31), methyl-methacrylate (MMA) adhesives on prepared steel, or cementitious grouts in 4 mm saw-cut concrete grooves.
What spool lengths are available for structural testing and bridge monitoring?
DSS V1 is supplied in precision-wound spools of 200 m, 500 m, 1,000 m and 2,000 m, or factory pre-terminated with FC/APC or E2000/APC pigtails.

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BRUsens DSS V1 Distributed Strain Sensing Fibre Optic Cable

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