PFA Thermocouple Extension Cable with Galvanized Steel Armouring
This high-temperature thermocouple extension cable combines PFA-insulated thermoelectric conductors, glass-fibre braiding and galvanized-steel wire armouring. Designed for Type J and Type K temperature-measurement circuits, it provides mechanical protection and reliable operation at temperatures up to +250°C.
Key Highlights
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Recommended for extending thermocouple circuits between the measuring junction and temperature-monitoring equipment in high-temperature industrial environments.
Typical applications include:
- Type J thermocouple systems
- Type K thermocouple systems
- Industrial ovens and furnaces
- Heat-treatment equipment
- Plastics-processing machinery
- Heating and drying installations
- Industrial temperature controllers
- Process-monitoring systems
- Laboratory and test equipment
- Installations requiring mechanical cable protection
The conductor materials, polarity and identification must match the connected thermocouple. Ordinary copper sensor cable must not be used as a substitute.
Conductor materials:
- Type J reference construction: Iron/constantan, Fe–CuNi
- Type K reference construction: Nickel-chromium/nickel, NiCr–Ni
Conductor construction:
- 0.22 mm²: 7 × 0.20 mm
- 0.50 mm²: 16 × 0.20 mm
- 1.00 mm²: 32 × 0.20 mm
Core insulation: PFA fluoropolymer
Core identification: According to the selected thermocouple type and applicable polarity code
Stranding: Insulated thermocouple conductors stranded together
Protective braiding: Glass-fibre braid
Outer armouring: Galvanized-steel wire armouring with identification tracer
Cable shape: Round
Outer sheath: No conventional extruded outer sheath specified
Electrical screen: No dedicated copper electromagnetic screen specified
Thermocouple compatibility:
- Type J, Fe–CuNi
- Type K, NiCr–Ni
Available configurations:
- Two-core construction
- Four-core construction
Maximum temperature:
- Flexible application: Up to +250°C
- Fixed installation: Up to +250°C
- Limited-duration exposure: Up to +260°C
Minimum bending radius: 12 × cable diameter
Insulation resistance: Greater than 1 MΩ·km
Flame propagation: No flame propagation according to IEC 60332-3-24 and VDE 0482-332-3-24, or IEC 60332-3-25 and VDE 0482-332-3-25, Category C or D
Fire performance: Flame-retardant and self-extinguishing according to IEC 60332-1-2 and VDE 0482-332-1-2
Mechanical protection: Galvanized-steel wire armouring provides resistance against abrasion and external mechanical damage
Compliance reference: RoHS
Halogen-free status: Not classified as halogen-free because the construction uses PFA insulation
PFAS-free status: No PFAS-free claim should be made for the PFA-insulated construction
Dimensions are common to the Type J and Type K reference versions:
| Number of Cores × Cross-Section | Strand Construction | Thermocouple Options | Approx. Outer Ø | Approx. Cable Weight |
| 2 × 0.22 mm² | 7 × 0.20 mm | Type J or Type K | 3.3 mm | 2.1 kg/100 m |
| 2 × 0.50 mm² | 16 × 0.20 mm | Type J or Type K | 4.1 mm | 3.9 kg/100 m |
| 2 × 1.00 mm² | 32 × 0.20 mm | Type J or Type K | 4.9 mm | 5.2 kg/100 m |
| 4 × 0.22 mm² | 7 × 0.20 mm | Type J or Type K | 3.7 mm | 3.2 kg/100 m |
| 4 × 0.50 mm² | 16 × 0.20 mm | Type J or Type K | 4.7 mm | 5.1 kg/100 m |
| 4 × 1.00 mm² | 32 × 0.20 mm | Type J or Type K | 5.6 mm | 7.5 kg/100 m |
Other thermocouple types, conductor sizes, identification colors and customized dimensions are available on request.
THE FACTORY
BEHIND EVERY METER
Founded in 2007 in Foshan, Guangdong, Hulk Electric has grown from a regional producer into a globally recognised manufacturer of customised industrial cable solutions. Our 10,000㎡ facility runs on Toyota Production System lean principles, operated by 150+ skilled professionals producing over 300,000 metres every month.
Every cable you see on this page — including the HK-TRVV series — is engineered, extruded, tested, and shipped from that single facility. No trading company sits between you and the extrusion line.
Source Factory
Direct manufacturer — no middlemen, no markups. You deal with the engineers who run the line.
Deep Customization
Conductor, shielding, jacket compound, colour coding, certification — built to your exact spec.
7-Day Sampling
Rapid samples for new specifications. 15-day lead time on standard production orders.
Global Compliance
35+ certifications covering UL, CE, TÜV, IEC, RoHS and REACH for every major market.
BEFORE YOU ORDER
For stocked configurations listed in the ordering table, MOQ is 100 metres per specification. Custom configurations — non-standard core counts, jacket colours, or special compounds — carry a 500 metre MOQ. Samples of 5–10 metres are available free of charge for qualification testing.
Use shielded (P or PP suffix) whenever the cable runs alongside servo drives, VFDs, or inverters, or when carrying encoder, sensor, or analogue signals. Unshielded is suitable for pure power distribution and simple on/off control lines. If in doubt, our engineering team can review your cabinet layout and advise — this is included with any quotation.
Yes. Send us the existing part number or a sample and we will produce a cross-reference specification with matching electrical, mechanical, and dimensional characteristics. Most cross-references are turned around within 3 working days, with a physical sample following within 7 days.
Standard shipments include the CE Declaration of Conformity, RoHS and REACH statements, and the batch test report. UL Recognition (UL 2464 / UL 20549) is available on request for North American projects — specify this at the quotation stage as it affects the material specification.
Standard configurations ship in 15 working days from order confirmation. Custom-engineered specifications typically require 20–25 working days, depending on compound availability. Rapid sampling for new specifications is 7 days. We will confirm the exact date in writing with your order acknowledgement.
Engineering Support for Your Application
Tell Us How Your Cable Needs to Move
Send us a datasheet, drawing, existing cable model or a short description of your application. Our engineering team will help you identify a suitable cable construction.
- 01 Motion type, travel distance and minimum bend radius
- 02 Voltage, current, signal protocol and shielding needs
- 03 Operating environment, target service life and quantity
