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Type N Thermocouple Bare Wire NP NN 0.8mm Diameter High Temperature Resistant Thermocouple Wire
| مكان المنشأ | شنغهاي |
|---|---|
| اسم العلامة التجارية | Huona |
| إصدار الشهادات | ISO9001 |
| رقم الموديل | اكتب N. |
| الحد الأدنى لكمية | 10 كجم |
| الأسعار | قابل للتفاوض |
| تفاصيل التغليف | كرتون/حالة خشبية |
| وقت التسليم | 5-21 يومًا |
| شروط الدفع | ل / c، / تي تي، ويسترن يونيون |
| القدرة على العرض | 500 طن شهريا |
تفاصيل المنتج
| درجة السبائك | اكتب N. | القطر | 0.8 ملم (±0.01 ملم) |
|---|---|---|---|
| استمارة | بكرة (50 م/الساق) | فئة الدقة | فئة IEC 1 |
| درجة حرارة التشغيل | -270 درجة مئوية ~ 1300 درجة مئوية (مستمر) | قوة الشد | ≥600 ميجا باسكال (NP / NN) |
| استطالة | ≥20 ٪ | الطاقة الحرارية | ~27.7 ميكروفولت/درجة مئوية عند 100 درجة مئوية |
| إبراز | Type N thermocouple bare wire,0.8mm thermocouple wire high temperature,NP NN thermocouple wire resistant,0.8mm thermocouple wire high temperature,NP NN thermocouple wire resistant |
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منتوج وصف
Type N Thermocouple Bare Wire (NP/NN) – 0.8mm Diameter
Product Overview
This Type N thermocouple bare wire from Huona is a high-stability, long-life thermoelectric wire pair composed of NP (Nicrosil, positive leg) and NN (Nisil, negative leg), specifically engineered to address the limitations of Type K at high temperatures. Manufactured via precision vacuum melting, fine drawing, and controlled annealing, it delivers exceptional resistance to oxidation, “green rot” degradation, and thermoelectric drift, making it ideal for demanding industrial and power generation applications.
Core Specifications
- Product Name: Type N Thermocouple Bare Wire (NP/NN Pair)
- Alloy Composition:
- NP (Positive Leg): Nicrosil (Ni: ~84%, Cr: ~14.2%, Si: ~1.4%, Mg: ~0.1%)
- NN (Negative Leg): Nisil (Ni: ~95.5%, Si: ~4.4%, Mg: ~0.1%)
- Diameter: 0.8mm (customizable: 0.2–3.0mm)
- Tolerance: ±0.01mm
- Form: Spool (standard length: 50m/leg; custom lengths available)
- Thermoelectric Performance:
- Accuracy Class: IEC Class 1 (±1.5°C or ±0.4% of reading, whichever is greater)
- Thermoelectric Power: ~27.7 µV/°C at 100°C
- Operating Temperature Range: -270°C ~ 1300°C (continuous use; short-term up to 1350°C)
- Standards Compliance: IEC 60584-1, ASTM E230, GB/T 4989, RoHS 2.0
- Manufacturer: Huona (Shanghai) New Material Co., Ltd.
Key Differentiating Advantages
1. Superior High-Temperature Stability (vs. Type K)
Unlike Type K thermocouples, which suffer from severe thermoelectric drift and “green rot” oxidation at 800–1000°C, Type N NP/NN wire maintains consistent thermoelectric performance at temperatures up to 1300°C. This eliminates the need for frequent calibration and replacement in high-temperature furnaces and boilers.
2. Excellent Oxidation & Sulfidation Resistance
The Nicrosil/Nisil alloys form a dense, protective SiO₂-rich oxide layer at high temperatures, providing far better resistance to oxidation and sulfidation than Chromel/Alumel. This significantly extends service life in industrial environments with flue gases or mild sulfur contamination.
3. Low Drift for Long-Term Monitoring
Type N wire exhibits minimal thermoelectric drift even after thousands of hours of continuous use at high temperatures, making it ideal for critical process monitoring in power plants, petrochemical refineries, and steel mills.
4. Balanced Mechanical Properties
With a tensile strength ≥600 MPa and elongation ≥20%, the wire offers good flexibility for forming probes while maintaining sufficient strength for high-temperature installations. Its fine-grained microstructure resists cracking during thermal cycling.
5. Versatile Compatibility
Compatible with standard Type N thermocouple connectors, extension wires, and instrumentation, allowing seamless replacement of Type K in high-temperature applications without system overhauls.
Technical Specifications Table
| Attribute | Value (Typical) |
|---|---|
| Alloy Grade | NP (Nicrosil) / NN (Nisil) |
| Diameter | 0.8mm (±0.01mm) |
| Form | Spool (50m/leg) |
| Accuracy Class | IEC Class 1 |
| Operating Temperature | -270°C ~ 1300°C (continuous) |
| Tensile Strength | ≥600 MPa (NP/NN) |
| Elongation | ≥20% |
| Surface Finish | Bright, oxide-free |
| Packaging | Anti-oxidation spool packaging |
Typical Applications
- Power Generation: Boiler superheater and turbine exhaust temperature monitoring in coal-fired and gas-fired power plants.
- Steel & Metal Processing: Temperature control in reheating furnaces, annealing ovens, and continuous casting processes.
- Petrochemical Refining: Catalytic cracker and reformer temperature monitoring in harsh, sulfur-containing environments.
- Aerospace & Defense: High-temperature sensing in jet engine components and rocket propulsion systems.
- Industrial Furnaces: Long-term monitoring in glass melting kilns, ceramic sintering furnaces, and heat treatment ovens.
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