NiCrSi NiSiMg Type N Thermocouple Wire Wide Temperature Range And Excellent Long Term Performance
NiCrSi-NiSiMg Type N Thermocouple Wire Wide Temperature Range and Excellent Long-Term Performance
NiCrSi-NiSiMg Type N Thermocouple Wire is a high-precision, high-stability thermocouple, particularly well-suited for high-temperature, oxidizing, and corrosive environments. With a wide temperature range, excellent resistance to oxidation and sulfur, and minimal drift over time, it is ideal for demanding industrial applications such as gas turbines, aerospace, metal processing, and high-temperature scientific research. Despite being more expensive than other thermocouple types, its superior performance and longevity make it a worthwhile investment in extreme temperature conditions.
Thermocouple temperature range and tolerance
Name |
Usag Classification |
Grade |
Max. operating temperature(℃) | emperitre nres) |
Tnlerene |
Standard |
|
Lang term |
Short term |
||||||
NiCrSi-NiSiMg (Type N) thermocouple bright wire |
N | l | 1200 | 1300 | -40~1100 | ±1.5℃ or ±0.4%t |
GB/T17615 IEC 584-1 |
| Ⅱ | -40~1300 | ±2.5℃ or ±0.75%t | |||||
| Name | NP | NN |
| Melting Range(℃) | 1410 | 1340 |
| Density(g/cm³) | 8.5 | .8.6 |
| Resistivity(μΩm20℃) | 100 | 33 |
|
Resistance-temperture coefficient ×10-4/K(0℃-1200℃) |
0.78 | 14.9 |
| Tensile strength Rm N/mm² MPa | ≥620 | ≥550 |
| Elongation % | ≥30 | ≥35 |
Some key features of NiCrSi-NiSiMg Type N Thermocouple Wire include:
- Wide Temperature Range
-200°C to 1300°C (-328°F to 2372°F).
Type N thermocouples are ideal for high-temperature measurements and can operate reliably at temperatures higher than other common thermocouple types like Type K or Type J.
- Excellent Accuracy
Type N provides high accuracy and stability with a thermoelectric voltage that delivers a precise measurement. The tolerance is typically ±0.25°C in the lower temperature range and ±0.75% in the high-temperature range.
- Material Composition
Positive Leg (NiCrSi): A nickel-chromium-silicon alloy that provides improved resistance to oxidation at high temperatures, especially in oxidative or corrosive environments.
Negative Leg (NiSiMg): A nickel-silicon-magnesium alloy that enhances resistance to oxidation and improves thermoelectric stability at high temperatures.
- Thermoelectric Properties
Type N has a low temperature coefficient and delivers stable voltage output over a broad temperature range, making it suitable for precision temperature measurements.
- Superior Oxidation Resistance
Both the NiCrSi and NiSiMg alloys are highly resistant to oxidation, even at elevated temperatures, making Type N thermocouples ideal for use in harsh or highly oxidative environments such as furnaces, gas turbines, and high-temperature industrial processes.
- Stable Long-Term Performance
Exceptional long-term stability: Type N thermocouples offer superior stability over extended periods compared to other thermocouple types, especially in high-temperature applications.
Minimal drift: Type N is less prone to drift and degradation over time, which enhances reliability and reduces maintenance costs.
- Non-Magnetic
Type N thermocouples are non-magnetic, making them suitable for applications where magnetism can interfere with processes or measurements.
- Resistance to Sulfur
Excellent performance in sulfur-rich environments, which often cause rapid degradation in other thermocouple types like Type K or Type J.
Applications
- High-Temperature Processing: Ideal for use in furnaces, kilns, and other high-temperature industrial applications.
- Aerospace & Gas Turbines: Perfect for measuring temperatures in turbines, jet engines, and other aerospace components exposed to extreme heat.
- Research & Scientific Applications: Provides accurate temperature measurement for high-temperature scientific experiments.
- Metallurgical & Chemical Industries: Suitable for environments with oxidizing atmospheres, such as metal processing and chemical manufacturing.
Cable Options
- Available in bare wire, insulated wire, or cable forms, with insulation materials such as fiberglass, ceramic, and Teflon.
- Shielded cables are available for environments with electrical noise or electromagnetic interference.
Advantages of Type N Thermocouple Wire:
- High Accuracy and Stability: Type N offers exceptional accuracy and long-term stability, making it suitable for precision measurements in high-temperature applications.
- Resistance to Oxidation: The unique alloy composition ensures resistance to oxidation and corrosion, especially in high-temperature and oxidative environments.
- Wide Temperature Range: Operates reliably in temperatures up to 1300°C, suitable for high-temperature industrial applications.
- Minimal Drift: It experiences minimal drift over time, improving the consistency and reliability of temperature measurements.
- Non-Magnetic Properties: Non-magnetic characteristics make it suitable for use in sensitive applications, such as aerospace and electronics.
- Sulfur Resistance: Resistant to sulfur, which can degrade other thermocouple types.
Limitations:
- Cost: Type N thermocouples are typically more expensive than other common thermocouples (like Type K), due to their special alloy composition and higher performance characteristics.
- Specialized Application: While ideal for high-temperature and oxidative environments, they may be over-engineered for applications that do not require such extremes, leading to higher costs.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.