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Product

fiber optic cable seriesIEC 61757-1-1 DSS±10,000 µε StrainFIMT + Wire Armour

BRUsens BSSH V13 Heavy-Duty Armoured Strain-Sensing Fibre CableHeavy-duty wire-armoured distributed Brillouin & Rayleigh strain sensing cable

BRUsens BSSH V13 Heavy-Duty Armoured Strain-Sensing Fibre Cable with hermetically locked central stainless-steel tube, galvanized steel wire armour and structured PA/HDPE sheath for direct soil, concrete and geotechnical strain transfer.

Geotechnical Burial
Hermetic 316L FIMT
Locked Strain Transfer
IEC 61757-1-1
Order designation
BRUsens BSSH V13-02SM
Outer Ø
7.2 mm
Weight ≈
86 kg/km
Max. tensile load
10,000 N
Crush rating
8,000 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 / BOTDR
Brillouin & Rayleigh strain
Strain range
±10,000 µε
Direct mechanical coupling
Outer Ø
7.2 mm nominal
Structured PA/HDPE jacket
Tensile rating
10,000 N max
Galvanized steel wire armour
Crush rating
8,000 N/100 mm
Heavy earth & shotcrete load
Temperature
-40 to +85 °C
Concrete curing & soil service

Typical values for this cable type, based on IEC 61757-1-1 / IEC 60794-1-21 / ITU-T G.652.D — confirmed in the datasheet and quotation for your order.

Application fit

Is BRUsens BSSH V13 right for your machine?

Mechanically locks the optical fibre to the stainless tube, wire armour and outer jacket so ground movement or concrete strain transfers 1:1 into Brillouin frequency shift.

Fixed installation

Suitable

Direct embedment in concrete piles, diaphragm walls, dam foundations, and landslide boreholes.

TBM gantry & advancing tunnel reel

Suitable

Shotcrete and segment lining strain monitoring in TBM tunnels and mined caverns.

Immersion & wet locations

Suitable

Laser-welded 316L tube and HDPE/PA sheath withstand up to 15 MPa (150 bar) pore water pressure.

Energy chain / drag chain

Not suitable

Rigidly coupled geotechnical strain sensor cable; not for dynamic cable carriers.

Use HITRONIC PCF DUPLEX
Typical machinesDam, Levee & Tailings Geotechnical MonitoringTBM Tunnel & Cavern ConvergenceDeep Foundation Piles & Diaphragm WallsPipeline Subsidence & Landslide Early WarningHigh-Speed Rail Embankment Settlement

Construction

Layer by layer

BRUsens BSSH V13 showing strain-locked ITU-T G.652.D/G.657.A1 fibre inside a central stainless-steel tube, high-tensile galvanized steel wire armour, and structured polyamide/HDPE outer sheath.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Strain-coupled sensing fibre1 to 4 ITU-T G.652.D / G.657.A1 single-mode fibres mechanically coupled to the inner tube wallBrillouin gain coefficient ≈ 0.05 MHz/µε @ 1550 nm
2Central stainless-steel FIMTHermetically laser-welded AISI 316L stainless-steel micro-tube with elastomeric strain-transfer matrixZero fibre slippage up to ±10,000 µε
3Helical galvanized steel wire armourHigh-tensile galvanized carbon steel wires stranded tightly over the central FIMTAxial stiffness EA ≈ 850 kN · 10 kN breaking load
4Interlocking structured outer sheathHigh-modulus Polyamide (PA12) or HDPE pressure-extruded into wire interstices with external ribsPrevents soil/concrete slip and transfers axial shear

BSSH V13-02SM (Standard)

2 × strain-locked SM fibres + 7.2 mm structured PA/HDPE jacket for pile and soil anchors

BSSH V13-04HYB (Strain + Temp)

2 × strain-locked SM fibres + 2 × loose SM/MM fibres for simultaneous temperature compensation

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.652.D. 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
Strain resolution
±2 µε (OFDR) · ±15 µε (BOTDA)

Thermal

Operating temperature
-40 °C to +85 °C (up to +100 °C concrete hydration)
Installation temperature
-20 °C to +60 °C
Thermal Brillouin coeff.
≈ 1.07 MHz / K @ 1550 nm

Mechanical

Operating strain range
-10,000 µε to +10,000 µε (±1.0 %)
Max. tensile load
10,000 N (ultimate) · 5,000 N (working)
Crush resistance
8,000 N / 100 mm
Min. bend radius
15 × OD (110 mm static) · 20 × OD (dynamic)

Optical

Fibre grade
ITU-T G.652.D / G.657.A1 high-proof-test silica
Attenuation @ 1550 nm
≤ 0.25 dB/km (strain-locked core)
Fibre proof test
≥ 200 kpsi (1.38 GPa) for 1 % strain reliability

Resistance

Hydrostatic pressure
Up to 15 MPa (150 bar) pore pressure
Alkaline concrete resistance
PA12 / HDPE resists pH 13.5 cement grout
Impact & abrasion
30 J impact (Method E4) for gravel & shotcrete

Reference standards

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

Identification

Outer sheath
Black structured PA12/HDPE with Orange stripe
Fibre coding
TIA-598-D Blue/Orange (strain) + Green/Brown (temp)
Customs tariff (HS)
8544.7000

Sizes

4 standard BRUsens BSSH V13 heavy-duty strain sensing models

Dimensional, axial stiffness and tensile ratings for BSSH V13 armoured strain sensing cables.

Dimensions & strain parameters
Order designationFibre configurationOuter Ø
mm		Weight ≈
kg/km		Max. load
N		Crush
N/100 mm		Enquiry
BSSH V13 Heavy-Duty Wire-Armoured Strain Cables
BRUsens BSSH V13-02SM2 × SM G.657.A1 (strain)7.28610,0008,000
BRUsens BSSH V13-04SM4 × SM G.657.A1 (strain)7.28810,0008,000
BRUsens BSSH V13-02S02T2 × SM (strain) + 2 × SM (temp)7.89610,0008,000
BRUsens BSSH V13-02S02T02M2 × SM (strain) + 2 × SM + 2 × OM38.210510,5008,000
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Strain-locked fibres are calibrated for 0.050 MHz/µε Brillouin shift; loose compensation fibres isolate thermal drift.

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 baseline trace @ 1550 nmUniform Brillouin frequency profile and α ≤ 0.25 dB/kmEvery drum length
Sample tests
Tensile strain transfer linearity & hysteresis testLinearity R² ≥ 0.999 and zero creep slippage up to ±10,000 µεType qualification
Radial crush & concrete embedment pull-out test8,000 N/100 mm crush withstand and full bond in C30/37 concreteType 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.652.DRoHS 2 & REACH Compliant

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX BRUSENS BSSH V13 STRAIN SENSING CABLE IEC 61757-1-1
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 BSSH V13 Heavy-Duty Armoured Strain-Sensing Fibre Cable – technical datasheet4 sizes · construction, technical data, approvalsXLSXBRUsens BSSH V13 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 does BRUsens BSSH V13 prevent internal fibre slippage under high soil or concrete strain?
Unlike telecom cables where fibres float in grease, BSSH V13 locks high-proof-test (200 kpsi) single-mode fibres inside a laser-welded 316L tube using a cross-linked elastomer, then interlocks the galvanized wire armour and structured outer jacket so external strain transfers 1:1 to the glass core.
How do we compensate for temperature changes during Brillouin strain monitoring?
Because Brillouin frequency shift responds to both strain (≈0.05 MHz/µε) and temperature (≈1.07 MHz/K), you can either specify the BSSH V13-02S02T hybrid variant with strain-free loose fibres in the same cable or run a parallel BRUsens DTS cable to subtract thermal drift.
Can BSSH V13 be tied directly to reinforcement cages before pouring concrete?
Yes. Its 8,000 N/100 mm radial crush rating and 30 J impact withstand allow direct tie-wrapping to rebar cages in bored piles, diaphragm walls and tunnel segments prior to concrete pouring and vibrator compaction.
Which interrogators are compatible with BRUsens BSSH V13?
BSSH V13 works with all 1550 nm BOTDA, BOTDR and BOFDA Brillouin interrogators as well as high-resolution Rayleigh OFDR / Φ-OTDR strain interrogators.

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BRUsens BSSH V13 Heavy-Duty Armoured Strain-Sensing Fibre Cable

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