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Huona J-Type Thermocouple Bare Wire SWG30/SWG25/SWG19 High Thermal Sensitivity

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x제품 이름 | J형 열동전체 무선 | 긍정적인 | 철 |
---|---|---|---|
부정적인 | 콘스탄탄 | 지름 | SWG30/SWG25/SWG19 |
100 ° C에서 EMF (VS 0 ° C) | 5.268 MV | 750 ° C에서 EMF (VS 0 ° C) | 42.919 MV |
직경 공차 | ± 0.01mm/± 0.015mm/± 0.015mm | 신장 (20 ° C) | ≥20%/≥22%/≥25% |
강조하다 | J-Type thermocouple bare wire,SWG30 thermocouple high thermal sensitivity,Huona thermocouple cable SWG25 |
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.
- 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
- 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.
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% |
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 |
- 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.