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Product

fiber optic cable seriesIEC 61757-1-1 DSSV3 / V4 / V9 RibbedConcrete & Soil Anchor

BRUsens DSS V3 / V4 / V9 Structured Strain-Sensing Fibre CableStructured-profile (V3, V4 & V9) concrete & soil anchorage strain sensing fibre cables

BRUsens DSS V3 / V4 / V9 Structured Strain-Sensing Fibre Cable family with periodic mechanical anchorage ribs and central stainless-steel or monolithic strain-locked cores for slip-free embedment in concrete, grout, soil and rock.

Ribbed Soil/Concrete Lock
FIMT / Monolithic Core
±10,000 µε Strain
IEC 61757-1-1
Order designation
BRUsens DSS V3-02SM
Outer Ø (over ribs)
4.6 mm
Weight ≈
29 kg/km
Max. tensile load
1,400 N
Crush rating
4,000 N/100mm
All sizes (4)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Sensing mode
BOTDA / OFDR
Brillouin & Rayleigh strain
Profile series
V3 · V4 · V9
Ribbed / indented anchorage
Outer Ø
4.0 to 6.0 mm
Over mechanical lock ribs
Strain range
±10,000 µε
Positive form-fit anchorage
Tensile load
800 to 2,800 N
Model-dependent stiffness
Temperature
-40 to +85 °C
Concrete & soil cure/service

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 V3 / V4 / V9 right for your machine?

Periodic external ribs/indentations on V3, V4 and V9 create a positive mechanical form-lock in concrete, cement grout and compacted soil without relying on chemical adhesives.

Fixed installation

Suitable

Cast directly into concrete slabs, bored piles, grouted rock bolts, and compacted soil trenches.

TBM gantry & advancing tunnel reel

Suitable

Embeds in shotcrete linings and backfill grout to track tunnel convergence and crack opening.

Immersion & wet locations

Suitable

V3 and V9 incorporate a hermetically laser-welded 316L stainless FIMT for saturated ground.

Energy chain / drag chain

Not suitable

Static structural sensor designed to lock into concrete or soil; not for moving cable chains.

Use HITRONIC PCF DUPLEX
Typical machinesConcrete Dam & Foundation Crack MonitoringGrouted Rock Bolts & Soil NailsTailings Dam & Embankment Slip DetectionPrecast Tunnel Lining & Shotcrete SHMGeothermal & CCS Borehole Grout Annulus

Construction

Layer by layer

BRUsens DSS V3 (central 316L FIMT + structured PA jacket), V4 (all-dielectric monolithic structured PA jacket), and V9 (wire-reinforced structured jacket) with external anchorage ribs.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Strain-locked optical fibre1 or 2 ITU-T G.657.A1 (200 kpsi proof-tested) single-mode sensing fibres bonded to the carrier coreLinear Brillouin frequency shift 0.050 MHz/µε
2Central carrier (FIMT on V3/V9 · Elastomer on V4)Laser-welded 316L stainless steel micro-tube with elastomeric lock (V3/V9) or monolithic polyamide core (V4)Eliminates internal fibre creep under sustained load
3Tensile reinforcement (V9 steel / V4 aramid)Stranded steel wires on V9; central FIMT on V3; dielectric aramid filaments on V4Tailors axial stiffness EA from 25 kN (V4) to 220 kN (V9)
4Ribbed / indented anchorage outer sheathStructured Polyamide 12 (PA12) or HDPE with periodic annular ribs / indentationsMechanical interlock prevents pull-out in grout, concrete or soil

BRUsens DSS V3 (FIMT + Structured PA)

Ø 4.6 mm central 316L stainless tube with ribbed PA12 jacket for concrete & grouted boreholes

BRUsens DSS V4 (All-Dielectric Ribbed)

Ø 4.0 mm metal-free structured PA12 sensor for low-stiffness soil and concrete crack detection

BRUsens DSS V9 (Wire-Reinforced Ribbed)

Ø 6.0 mm FIMT + steel wire reinforcement + structured jacket for high-load piles & rock anchors

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
Brillouin (BOTDA / BOTDR) & Rayleigh OFDR
Strain sensitivity
≈ 0.050 MHz / µε @ 1550 nm
Dielectric option
DSS V4 is 100 % metal-free all-dielectric

Thermal

Operating temperature
-40 °C to +85 °C (+100 °C concrete hydration)
Installation temperature
-15 °C to +60 °C
Storage temperature
-40 °C to +85 °C

Mechanical

Operating strain range
-10,000 µε to +10,000 µε (±1.0 %)
Axial stiffness (EA)
25 kN (V4) · 85 kN (V3) · 220 kN (V9)
Max. tensile load
800 N (V4) · 1,400 N (V3) · 2,800 N (V9)
Crush resistance
2,500 N (V4) · 4,000 N (V3) · 5,500 N/100 mm (V9)
Min. bend radius
15 × OD static · 20 × OD dynamic

Optical

Fibre specification
ITU-T G.657.A1 / G.652.D (200 kpsi proof test)
Attenuation @ 1550 nm
≤ 0.25 dB/km
Attenuation @ 1310 nm
≤ 0.38 dB/km

Resistance

Cement & alkali resistance
PA12 / HDPE resists pH 13.5 hydrating concrete
Hydrostatic pressure
Up to 10 MPa (100 bar) on V3 and V9 FIMT models
Pull-out bond strength
Ribbed profile locks into grout with zero slip

Reference standards

Strain sensor standard
IEC 61757-1-1 Distributed Strain Measurement
Cable test standard
IEC 60794-1-21 & IEC 60794-1-22
RoHS & REACH
2011/65/EU & EC 1907/2006 compliant

Identification

Outer sheath
Structured Black/Blue PA12 with periodic ribs
Fibre coding
TIA-598-D Blue/Orange
Customs tariff (HS)
8544.7000

Sizes

4 standard BRUsens DSS V3, V4 & V9 structured strain models

Dimensional, axial stiffness (EA) and mechanical ratings for structured-surface strain sensing cables.

Dimensions & stiffness ratings
Order designationCore & surface structureOuter Ø
mm		Weight ≈
kg/km		Max. load
N		Crush
N/100 mm		Enquiry
Structured-Surface Concrete & Soil Strain Cables
BRUsens DSS V4-01SM1F All-Dielectric Ribbed PA12 (EA 25 kN)4.0168002,500
BRUsens DSS V3-01SM1F 316L FIMT + Ribbed PA12 (EA 85 kN)4.6281,4004,000
BRUsens DSS V3-02SM2F 316L FIMT + Ribbed PA12 (EA 85 kN)4.6291,4004,000
BRUsens DSS V9-02SM2F FIMT + Steel Wire + Ribbed PA12 (EA 220 kN)6.0582,8005,500
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Periodic surface ribs anchor directly into curing concrete, cement grout or compacted soil without adhesives.

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 & Brillouin uniformity check @ 1550 nmα ≤ 0.25 dB/km and uniform strain-transfer factorEvery spool length
Sample tests
Concrete pull-out & crack-bridging calibrationZero anchorage slip in C30/37 concrete up to ±10,000 µεType qualification
Radial crush & hydrostatic pressure testUp to 5,500 N/100 mm crush and 100 bar water pressure (V3/V9)Type qualification

Inspection certificate

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

Product approvals

IEC 61757-1-1 Distributed StrainIEC 60794-1-21 & ITU-T G.657.A1RoHS 2 & REACH Compliant

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX BRUSENS DSS V3/V4/V9 STRUCTURED STRAIN CABLE
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 V3 / V4 / V9 Structured Strain-Sensing Fibre Cable – technical datasheet4 sizes · construction, technical data, approvalsXLSXBRUsens DSS V3 / V4 / V9 spec data (Excel)All 4 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.

How do the V3, V4 and V9 profiles differ in construction and application?
DSS V4 (Ø 4.0 mm) is an all-dielectric low-stiffness (EA 25 kN) ribbed cable ideal for soft soil movement and early-age concrete crack detection. DSS V3 (Ø 4.6 mm) adds a central 316L stainless-steel FIMT for grouted boreholes and concrete structures. DSS V9 (Ø 6.0 mm) adds steel wire reinforcement (EA 220 kN) for rugged pile and rock-bolt installations.
Why does a concrete-embedded strain cable need a ribbed outer sheath?
A smooth polymer jacket can debond and slide inside concrete once micro-cracks form, smearing the strain peak over several metres. The periodic ribs on DSS V3, V4 and V9 mechanically lock into the cement matrix so sub-millimetre crack openings are accurately localised.
Can DSS V3/V4/V9 measure both tensile crack opening and compressive concrete creep?
Yes. Because the optical fibre is pre-strained and locked inside the carrier during manufacture, it measures both compressive strain (down to -10,000 µε) and tensile elongation (up to +10,000 µε).
What drum lengths are supplied for dam and tunnel projects?
We supply continuous lengths of 500 m, 1,000 m, 2,000 m and up to 4,000 m on wooden drums.

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BRUsens DSS V3 / V4 / V9 Structured Strain-Sensing Fibre Cable

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