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Product

Triboelectric low-noise sensor cable≤ 5–15 fC Triboelectric Noise−70…+260 °C PTFE / FEP / PFACoax, Triax & Differential Pair

Low-Noise Cable for Piezoelectric SensorsConductive-carbon/PTFE triboelectric-treated low-noise charge accelerometer cable

Ultra-low-noise coaxial, triaxial and differential twisted-pair cable for high-impedance charge-mode piezoelectric accelerometers and pressure sensors, featuring a conductive carbon-PTFE anti-triboelectric layer that suppresses flex noise below ≤ 5–15 fC.

Low-EMC design
EMC screen
Flame-retardant
Oil-resistant
Order designation
PIEZO-LN-50-280 (RG-174 LN)
Outer Ø ≈
2.80 mm
Total weight ≈
16.5 kg/km
Min. bend R
14 mm
Construction
50 Ω Coax · AWG 26 (7×34 SPC)
All sizes (12)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Tribo-noise
≤ 5–15 fC
0.005–0.015 pC per IEST whip
Insulation R
≥ 10¹³ Ω·m
prevents charge-amp drift
Temperature
−70…+260 °C
PFA · −65…+200 °C FEP · PUR
Capacitance
95–100 pF/m
50 Ω coax · ~85 pF/m diff. pair
Screen coverage
≥ 95 % SPC Braid
silver-plated copper optical cov.
Bend radius
5 × OD
sub-miniature Ø 1.95–4.80 mm

Typical values for this cable type, based on IEST-RP-DTE011 / MIL-DTL-17 / ISO 16063 — confirmed in the datasheet and quotation for your order.

Application fit

Is Low-Noise Cable for Piezoelectric Sensors right for your machine?

Mandatory between high-impedance charge-mode piezoelectric sensors (pC/g, pC/bar, pC/N) and charge amplifiers where ordinary coaxial cable generates massive false low-frequency spikes from cable vibration.

Fixed installation

Suitable

Routes through gas-turbine casings, jet-engine test cells, nuclear reactor vessels and modal-analysis rigs.

Free-hanging vertical run

Suitable

Anti-triboelectric conductive PTFE interface bleeds off friction charges when the sensor lead vibrates or whips.

Offshore platform & shipboard deck trays

Suitable

FEP, PFA and PUR outer jackets resist aviation fuel, synthetic turbine oil, Skydrol and moisture.

TBM gantry & advancing tunnel reel

Not suitable

Sub-miniature precision sensor lead (Ø 1.95–6.4 mm); install inside protective conduit if routed underground.

RE-2Y(st)Y SWAY Armoured Cable
Typical machinesAero-Engine & Gas Turbine Vibration MonitoringAutomotive NVH, Crash & Shaker Table TestingHigh-Temperature Dynamic Pressure & CombustionNuclear & Steam Turbine Bearing DiagnosticsUnderwater Acoustics & Piezo Hydrophones

Construction

Layer by layer

Shown: PIEZO-LN-50-280 (RG-174 LN class) with 7×34 AWG silver-plated copper-clad steel/copper conductor, virgin PTFE dielectric, semi-conductive carbon/graphite-PTFE anti-triboelectric dispersion layer, ≥ 95 % silver-plated copper braid and +200/+260 °C FEP/PFA jacket.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Fine-stranded silver-plated copper (SPC / SPCCS)7-strand or 19-strand silver-plated oxygen-free copper or high-strength copper-clad steel (AWG 28 to AWG 22)High flex fatigue life under high-frequency shaker vibration up to +260 °C
2Virgin extruded PTFE dielectricHigh-purity polytetrafluoroethylene (PTFE) with insulation resistance ≥ 10¹³ Ω·mPrevents low-frequency RC time-constant droop on charge amplifier inputs
3Semi-conductive carbon/graphite-PTFE triboelectric layer Sintered conductive carbon-loaded PTFE dispersion layer bonded directly to the outer surface of the PTFE dielectricEqualises local electrostatic charges when the braid separates from the dielectric during flexing (≤ 5–15 fC)
4High-density silver-plated copper braid screenTightly woven silver-plated copper (SPC) braid with ≥ 95 % optical coverage in intimate contact with the conductive layerProvides low transfer impedance and mechanical containment
5High-temperature FEP, PFA or flexible PUR jacketExtruded fluoropolymer FEP (−65…+200 °C), PFA (−70…+260 °C), or oil-resistant PUR (−40…+105 °C)Resists jet fuel, hydraulic oils, solvents and thermal cycling

PIEZO-LN Coaxial (50 Ω)

Sub-miniature Ø 1.95, 2.50, 2.80 (RG-174 LN) and 3.20 mm single-ended charge cable for 10-32 UNF / M5 / BNC

PIEZO-LN-TP Differential Pair

Individually tribo-treated twisted pair + overall SPC braid for balanced differential charge amplifiers (2-pin MIL / Lemo)

PIEZO-LN-TRIAX (Concentric Triaxial)

Inner signal + tribo layer + inner guard braid + outer ground braid for driven-guard charge systems

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEST-RP-DTE011 / MIL-DTL-17 / ISO 16063. Values for your order are confirmed in the datasheet and quotation.

Electrical

Max. triboelectric charge noise
≤ 5 fC to ≤ 15 fC (0.005–0.015 pC) peak-to-peak
Insulation resistance
≥ 10,000 GΩ·m (10¹³ Ω·m) at +20 °C
Characteristic impedance (coax / triax)
50 Ω ± 2 Ω
Nominal capacitance
95–100 pF/m (50 Ω coax) · ~85 pF/m (differential pair)
Operating & test voltage
250 V rms working · 1000 V rms AC dielectric test

Thermal

Operating temperature (PFA jacket)
−70 °C to +260 °C
Operating temperature (FEP jacket)
−65 °C to +200 °C
Operating temperature (PUR jacket)
−40 °C to +105 °C

Mechanical

Min. bending radius
5 × OD (dynamic vibration) · 3 × OD (static routing)
Connector compatibility
10-32 UNF Microdot, M5, BNC, TNC, LEMO 00/0B, MIL-C-5015

Resistance

Fluid & chemical resistance
Resistant to Jet-A1, Skydrol, synthetic lubricants & solvents
Flame retardance
UL 94 V-0 / IEC 60332-1-2 (FEP & PFA fluoropolymer jackets)

Reference standards

Triboelectric test method
IEST-RP-DTE011 & Perls / ISA S37.10 shaker whip test
Coaxial construction basis
MIL-DTL-17 (RG-174 / RG-178 / RG-316 low-noise derivatives)

Identification

Jacket colour
Translucent Blue, Salmon/Orange, Black or White (by temp grade)
Customs tariff (HS)
8544.20 / 8544.49

Sizes

12 standard Low-Noise Piezoelectric Sensor Cable constructions

Covers 50 Ω single-ended coaxial, differential twisted-pair, concentric triaxial and 4-wire triaxial IEPE cables.

Dimensions, triboelectric noise & temperature ratings
Order designationConstructionDielectric / JacketNoise & temp. ratingOuter Ø ≈
mm		Weight ≈
kg/km		Min. bend R
mm		Enquiry
50 Ω Low-Noise Coaxial Charge-Mode Cables (10-32 UNF / BNC)
PIEZO-LN-50-19550 Ω Coax · AWG 28 (7×36 SPC)PTFE + Carbon / FEP≤ 15 fC · −65…+200 °C1.958.510
PIEZO-LN-50-25050 Ω Coax · AWG 26 (7×34 SPC)PTFE + Carbon / FEP≤ 10 fC · −65…+200 °C2.5013.012
PIEZO-LN-50-280 (RG-174 LN)50 Ω Coax · AWG 26 (7×34 SPC)PTFE + Carbon / PFA≤ 5 fC · −70…+260 °C2.8016.514
PIEZO-LN-50-32050 Ω Coax · AWG 24 (19×36 SPC)PTFE + Carbon / FEP≤ 10 fC · −65…+200 °C3.2021.016
PIEZO-LN-PUR-30050 Ω Coax · AWG 26 (19×38 Cu)PE + Carbon / PUR≤ 25 fC · −40…+105 °C3.0014.515
Differential Twisted-Pair Low-Noise Charge-Mode Cables (Turbine / Industrial)
PIEZO-LN-TP 1×2×AWG261 Pair × AWG 26 (19×38 SPC)PTFE + Carbon / FEPDiff. Charge · −65…+200 °C3.4019.517
PIEZO-LN-TP 1×2×AWG241 Pair × AWG 24 (19×36 SPC)PTFE + Carbon / FEPDiff. Charge · −65…+200 °C4.1028.020
PIEZO-LN-TP 1×2×AWG221 Pair × AWG 22 (19×34 SPC)PTFE + Carbon / PFADiff. Charge · −70…+260 °C4.8039.024
PIEZO-LN-TP 2×2×AWG242 Pairs × AWG 24 (19×36 SPC)PTFE + Carbon / FEPDual-Axis · −65…+200 °C6.4062.032
Concentric Triaxial & 4-Wire Triaxial IEPE Sensor Cables
PIEZO-LN-TRIAX-28050 Ω Triax · AWG 26 SPCPTFE + Carbon / FEPDriven Guard · −65…+200 °C2.8519.014
PIEZO-LN-TRIAX-36050 Ω Triax · AWG 24 SPCPTFE + Carbon / PFADriven Guard · −70…+260 °C3.6029.018
PIEZO-IEPE-4×AWG264-Core × AWG 26 SPCFEP / FEP BraidedTriaxial IEPE · −65…+200 °C3.5023.018
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • When terminating low-noise coaxial cable, strip back or clean any loose conductive carbon residue from the cut end of the PTFE dielectric so insulation resistance stays ≥ 10¹² Ω.

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
IEST-RP-DTE011 dynamic shaker triboelectric whip testGenerated charge ≤ 5–15 fC peak-to-peak under standard mechanical displacementEvery production lot
High-resistance electrometer insulation test (≥ 10¹² Ω)Verify zero carbon bridging and ≥ 10,000 GΩ·m dielectric resistanceEvery manufactured reel

Inspection certificate

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

Product approvals

IEST-RP-DTE011 Low-Triboelectric-Noise QualifiedMIL-DTL-17 Fluoropolymer Coaxial BasisCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX PIEZO-LN LOW NOISE SENSOR CABLE
Delivery form
Non-returnable fumigated wooden drums
Standard lengths
500 m · 1000 m standard drums (cut lengths on request)
MOQ
500 m (stock sizes) · 1000 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFLow-Noise Cable for Piezoelectric Sensors – technical datasheet12 sizes · construction, technical data, approvalsXLSXLow-Noise Cable for Piezoelectric Sensors spec data (Excel)All 12 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.

What is the triboelectric effect in piezoelectric sensor cables, and how does this cable eliminate it?
When a standard coaxial cable bends or vibrates, the outer copper braid rubs and momentarily separates from the PTFE core insulation. Friction between the metal braid and dielectric strips electrons and traps static charges on the insulator surface, injecting false picocoulomb spikes directly into the charge amplifier. Our Low-Noise Cable bonds a semi-conductive carbon/graphite-PTFE layer over the virgin PTFE dielectric so any separated charge is instantaneously equalised with the shield.
Do IEPE (ICP® / constant-current voltage-mode) accelerometers require low-noise triboelectric cable?
IEPE accelerometers contain a built-in MOSFET preamplifier that converts the high-impedance charge signal into a low-impedance (< 100 Ω) voltage signal inside the sensor housing, making them largely immune to triboelectric cable noise under normal vibration. However, high-temperature charge-mode accelerometers (> +165 °C, where internal electronics cannot survive) always require low-noise triboelectric cable.
When should I choose Differential Twisted-Pair (PIEZO-LN-TP) instead of 50 Ω Coaxial (PIEZO-LN-50)?
Specify 50 Ω Coaxial for laboratory modal testing and single-ended charge amplifiers (10-32 UNF / BNC). Specify Differential Twisted-Pair (PIEZO-LN-TP) for industrial gas turbines, aero-engines, and long cable runs where a balanced differential charge amplifier rejects common-mode ground-loop and ignition noise.
How should the screen and drain wire of Low-Noise Cable for Piezoelectric Sensors be earthed in instrumentation and Ex-i loops?
To prevent circulating 50/60 Hz ground-loop currents from coupling into millivolt or 4–20 mA signals, the Al/PET screen and tinned copper drain wire of Low-Noise Cable for Piezoelectric Sensors should be bonded to the clean instrumentation earth bar at one end only (typically in the control/marshalling cabinet) and insulated against chassis contact at the field transmitter or junction box, in accordance with IEC 60079-14 and EN 50288-7.

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Low-Noise Cable for Piezoelectric Sensors

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