Core Value
The K Type Thermocouple Fiberglass Braided Extension Wire is engineered for high-precision, elevated-temperature signal transmission in industrial heating systems, kilns, and heat treatment facilities. Constructed with high-purity NiCr-NiSi (Chromel/Alumel) alloy conductors conforming strictly to ANSI/IEC Special Class 1 calibration tolerances, this cable ensures accurate, drift-free millivolt signal transfer from sensing junctions to remote PID controllers and instrumentation.
Encased in a high-density, high-purity Fiberglass Braid Insulation (available with an optional Stainless Steel outer armor braid), it provides outstanding thermal endurance, operating continuously at temperatures up to 400°C (752°F). Its highly flexible stranded conductor design prevents insulation cracking and wire fatigue in high-vibration applications such as plastic machinery and industrial furnaces. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE and UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS for ultimate sensing fidelity and long service life.
- ✓ Class 1 High Accuracy Calibration: Precision Chromel/Alumel alloy conductors guarantee ANSI Class 1 (±1.1°C or ±0.4%) temperature tolerance.
- ✓ Elevated Temperature Endurance: High-purity fiberglass braiding operates continuously up to 400°C (752°F) without burning or melting.
- ✓ Flexible & Durable Stranding: Stranded alloy conductors offer high flex life, making routing through tight conduits and panels effortless.
- ✓ Optional Stainless Steel Overbraid: Heavy-duty metal armor guards against mechanical abrasion, cutting, and physical impact.
- ✓ Standardized Color Coding: Fully compliant with ANSI (Yellow/Red) and IEC (Green/White) standard thermocouple polarity identification.
- ✓ Low Thermal Mass & Compact Diameter: Slim wire profile fits easily into dense wiring troughs and multiplex junction boxes.
- ✓ Reliable Quality: 30+ YEARS MANUFACTURING EXPERIENCE guarantees precise alloy conductor purity and resistance uniformity.
- ✓ Quality Assured: UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS including millivolt calibration, resistance checks, and spark testing.
- ✓ Global Compliance: ANSI, IEC, CE, RoHS, and ISO 9001 certified.
Technical Specifications & Performance Data
| Parameter | Standard Value | Customizable Range | Notes |
| Thermocouple Type | Type K (Chromel / Alumel) | Type J / T / E / N / S / R | Standard positive (NiCr) / negative (NiSi) legs |
| Accuracy Class | Class 1 / Special Grade (±1.1°C) | Standard Grade (Class 2: ±2.2°C) | Precision millivolt curve matching |
| Insulation Material | Double High-Purity Fiberglass Braid | High-Temp Resin Impregnated Glass | Non-flammable, high thermal stability |
| Outer Protection | High-Density Glass Braid | Stainless Steel Wire Overbraid (SS304) | Metal armor adds anti-abrasion protection |
| Working Temperature | -20°C to +400°C (-4°F to +752°F) | Peak exposure up to 500°C | Outstanding thermal resistance in hot zones |
| Conductor Gauge | AWG 24 / AWG 20 / AWG 18 | AWG 30 to AWG 14 (Solid or Stranded) | Stranded conductors offer high flexibility |
| Color Coding | ANSI (Yellow +, Red -) / IEC (Green +, White -) | DIN / JIS Custom Color Standards | Clear polarity identification for controllers |
| Outer Diameter (OD) | Ø 1.8 mm – Ø 4.5 mm | Custom Braid Profiles | Compact profile for high-density terminal blocks |
| Warranty | 1 Year Standard | Extended coverage available | Guaranteed against manufacturing defects |
Industrial Applications & Solutions
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Heat Treatment Furnaces & Kilns: Extension signal leads routed near hot furnace walls, annealing ovens, and ceramic sintering kilns.
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Plastics Extrusion & Injection Molding: Temperature signal connections for barrel heating zones, nozzle thermocouples, and hot runner manifolds.
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Packaging & Heat Sealing Equipment: Continuous flexing thermocouple leads on sealing jaws, shrink tunnels, and hot-melt adhesive applicators.
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Glass & Metal Foundry Equipment: Temperature monitoring lines near glass annealing lehrs and aluminum holding pots.
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Power Plants & Boiler Rooms: High-temperature flue gas, steam pipeline, and turbine exhaust temperature monitoring cabling.
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HT-Heater vs Standard Market Thermocouple Wires
| Feature | HT-Heater Fiberglass K-Type Wire | Standard Market Wire | Your Advantage |
| Conductor Purity | High-Purity Class 1 Alloy Matching | Recycled / Class 2 Off-Spec Alloy | Zero signal drift & precise PID temperature control |
| Glass Braid Quality | High-Density Glass Fiber + Binder | Loose / Unbound Lower-Grade Fiber | Won’t fray, shed glass dust, or fray during stripping |
| Thermal Limit | Continuous operation up to 400°C | Charcoal / breaks down above 260°C | Long service life in extreme high-heat environments |
| Flexural Fatigue | Fine Multi-Strand Alloy Core | Stiff / Low-Strand Wire | Resists internal wire breaking during repeated bending |
| Manufacturing Exp. | 30+ YEARS EXPERIENCE | Unverified Workshops | Precision alloy drawing and uniform braid density |
| Quality Assurance | MULTIPLE RIGOROUS QUALITY CHECKS | Basic Continuity Test Only | ZERO DEFECT DELIVERY |
Installation & Integration Guidelines
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Polarity Verification: Verify correct lead polarity prior to connecting to PID controllers or transmitters (For ANSI Type K: Yellow = Positive, Red = Negative; For IEC: Green = Positive, White = Negative).
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Shield Grounding: Connect the metallic shielding braid to a clean instrument earth ground at one end only (preferably at the controller) to prevent ground loop noise interference.
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Avoid Sharp Bending: Maintain a minimum bend radius of at least 5 times the cable outer diameter to prevent kinking the internal alloy conductors or outer shield.
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Separate Power Cables: Route thermocouple signal cables in separate conduit or troughs away from high-voltage AC power lines and heavy motor cables to minimize inductive coupling.
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Sealed Junctions: Use proper high-temperature thermocouple connectors or ceramic terminal blocks when splicing extension cables to maintain calibration accuracy.
Customer Success Stories
Case 1:
Heat Treatment Furnace Builder (Italy)
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Application: Multi-zone annealing furnace external signal cabling operating near 350°C furnace outer walls.
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Challenge: Previous PVC and low-grade extension wires melted and shorted due to ambient heat radiated from the furnace shell.
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Solution: K Type Thermocouple Fiberglass Braided Extension Wire with Stainless Steel Overbraid.
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Results: ZERO WIRING MELTDOWNS FOR 3+ YEARS. “The fiberglass insulation handles ambient heat near the furnace shell effortlessly. HT-Heater UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS, and product calibration is rock solid.”
Case 2:
Packaging Machinery OEM (USA)
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Application: High-speed heat sealing jaw temperature sensing line on continuous flow wrappers.
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Challenge: Frequent flexing caused internal alloy conductor breakage on standard solid-core thermocouple wires every 4 weeks.
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Solution: Stranded AWG 24 K-Type Fiberglass Extension Wire (ANSI Standard).
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Results: CABLE FLEX LIFE INCREASED BY 500%. “30+ YEARS MANUFACTURING EXPERIENCE shows in their stranded wire construction. Cable breakdown on our sealing jaws has been completely eliminated.”
Pricing & Procurement Options
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Standard Production: MOQ 100 meters per gauge/color. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE ensuring exact spooling and resistance calibration uniformity. Tiered volume discounts available for 1,000+ meter orders.
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Lead Times: Standard Stock Gauges (AWG 24 / AWG 20 in ANSI & IEC colors): In stock, 3-5 days. Custom Shielding, Special Gauges, or Multi-Pair Cables: 7-10 days. Express air dispatch available.
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Global Logistics: Supplied on standard 100m/200m/500m spools or heavy reels. Packed in moisture-proof wrap and sturdy export cartons.
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Sample Orders: Free sample wire lengths available upon request for millivolt output and resistance testing. Every shipment UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS prior to dispatch.
Global Certifications & Compliance
- CE Marking
Fully compliant with European safety and environmental standards. - LVD Compliance
Low Voltage Directive tested for continuous thermal load safety. - RoHS Compliant
Constructed using environmentally safe, lead-controlled brass alloys. - ISO 9001
Certified quality control covering CNC machining, coil pressing, and electrical testing.
Quality Documentation: Certificate of Conformity (COC) and insulation resistance test reports included.
Comprehensive After-Sales Support
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- Warranty: 1-Year Comprehensive Warranty covering internal heating element and built-in sensor.
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Technical Support: Application engineers available for wattage distribution calculation, thermocouple calibration, and nozzle fitting assistance.
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Global Response Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE with technical inquiry feedback within 2 hours.
Ready to Optimize Your Injection Molding?
Next Steps:
- 📧 Request Custom Quote – Send your nozzle dimensions, wattage, voltage, and HT-CLW-450 drawing requirements.
- 🔧 Free Design Consultation – Work with our thermal engineers to optimize heat distribution and lead insulation.
- 📦 Order Test Samples – Evaluate thermal performance on your injection molding machine.
- 📞 Contact Hot Runner Experts – Response within 2 hours
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