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Huona J-Type Thermocouple Bare Wire SWG30/SWG25/SWG19 High Thermal Sensitivity
| Place of Origin | Shanghai |
|---|---|
| Brand Name | Huona |
| Certification | ISO 9001 |
| Model Number | Type J |
| Minimum Order Quantity | 10kg |
| Price | Negotiable |
| Packaging Details | Carton/Wooden Case |
| Delivery Time | 5-21 days |
| Payment Terms | L/C,Western Union,MoneyGram,T/T |
| Supply Ability | 500 tons per month |
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xProduct Details
| Product Name | Type J Thermocouple Bare Wire | Positive | Iron |
|---|---|---|---|
| Negative | Constantan | Diameter | SWG30/SWG25/SWG19 |
| EMF At 100°C (vs 0°C) | 5.268 MV | EMF At 750°C (vs 0°C) | 42.919 MV |
| Diameter Tolerance | ±0.01mm/±0.015mm/±0.015mm | Elongation (20°C) | ≥20%/≥22%/≥25% |
| Highlight | J-Type thermocouple bare wire,SWG30 thermocouple high thermal sensitivity,Huona thermocouple cable SWG25 |
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Product Description
Huona J-Type Thermocouple Bare Wire SWG30/SWG25/SWG19 High Thermal Sensitivity
Product Overview
Type J thermocouple bare wire, a high-precision temperature-sensing element crafted by Huona New Material, consists of two dissimilar alloy conductors--iron (positive leg) and constantan (copper-nickel alloy, negative leg)--engineered for accurate temperature measurement in moderate-temperature environments. Available in three standard wire gauges: SWG30 (0.305mm), SWG25 (0.51mm), and SWG19 (1.02mm), this bare wire eliminates insulation interference, making it ideal for custom thermocouple assembly, high-temperature calibration, and applications requiring direct contact with measured media.
Standard Designations
- Thermocouple Type: J (Iron-Constantan)
- Wire Gauges: SWG30 (0.315mm), SWG25 (0.56mm), SWG19 (1.024mm)
- International Standards: Complies with IEC 60584-1, ASTM E230, and GB/T 4990
- Form: Bare wire (uninsulated, for custom insulation/protection)
- Manufacturer: Huona New Material, certified to ISO 9001 and calibrated to national temperature standards
Key Advantages
- Gauge-Tailored Performance: SWG30 (thin gauge) offers high flexibility for tight-space installations; SWG19 (thick gauge) provides enhanced mechanical strength for industrial environments; SWG25 balances flexibility and durability for general-purpose use.
- Superior Thermoelectric Accuracy: Generates a stable electromotive force (EMF) with a sensitivity of ~52 μV/°C (at 200°C), outperforming Type K in the 0-500°C range, with Class 1 accuracy.
- Bare Wire Versatility: No pre-applied insulation allows users to customize protection based on specific temperature/corrosion requirements.
- Cost-Effective: Iron-constantan alloy is more affordable than precious metal thermocouples while delivering higher sensitivity than Type K.
- Good Oxidation Resistance: Performs reliably in oxidizing environments up to 750°C.
Technical Specifications
| Attribute | SWG30 (0.315mm) | SWG25 (0.56mm) | SWG19 (1.024mm) |
|---|---|---|---|
| Conductor Material | Positive: Iron; Negative: Constantan (Cu-Ni 40%) | Positive: Iron; Negative: Constantan (Cu-Ni 40%) | Positive: Iron; Negative: Constantan (Cu-Ni 40%) |
| Nominal Diameter | 0.305mm | 0.51mm | 1.02mm |
| Diameter Tolerance | ±0.01mm | ±0.015mm | ±0.02mm |
| Temperature Range | Continuous: 0-700°C; Short-term: 750°C | Continuous: 0-750°C; Short-term: 800°C | Continuous: 0-750°C; Short-term: 800°C |
| EMF at 100°C (vs 0°C) | 5.268 mV | 5.268 mV | 5.268 mV |
| EMF at 750°C (vs 0°C) | 42.919 mV | 42.919 mV | 42.919 mV |
| Conductor Resistance (20°C) | ≤160 Ω/km | ≤50 Ω/km | ≤15 Ω/km |
| Tensile Strength (20°C) | ≥380 MPa | ≥400 MPa | ≥420 MPa |
| Elongation (20°C) | ≥20% | ≥22% | ≥25% |
Product Specifications
| Item | Specification |
|---|---|
| Surface Finish | Bright annealed (oxide-free, Ra ≤0.2μm) |
| Supply Form | Spools (length: 50m/100m/300m per gauge) |
| Chemical Purity | Iron: ≥99.5%; Constantan: Cu 59-61%, Ni 39-41%, impurities ≤0.5% |
| Calibration | Traceable to NIST/China National Institute of Metrology (CNIM) |
| Packaging | Vacuum-sealed in argon-filled bags; plastic spools in moisture-proof cartons |
| Customization | Cut-to-length (minimum 1m), special alloy purity, or pre-tinned ends |
Typical Applications
- Custom Thermocouple Assembly: Used by sensor manufacturers to fabricate probes with application-specific protection.
- Industrial Temperature Sensing: Direct measurement in food processing and plastic molding.
- Calibration Equipment: Reference elements in temperature calibrators.
- Automotive Testing: Monitoring engine block and exhaust system temperatures.
- Laboratory Research: Thermal profiling in material science experiments.
Huona New Material subjects every batch of Type J bare wire to rigorous quality testing: thermoelectric stability tests, dimensional inspection, and chemical composition analysis. Free samples (1m per gauge) and calibration certificates are available upon request.
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