Jiangyin Chengxin Alloy Material Co., Ltd ，
Jiangsu Xiangcheng Supply Chain Management Co. LTD
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NiCrSi-NiSiMg Thermocouple Type N For Scientific Research And High-Temperature Measurements
The NiCrSi-NiSiMg Type N thermocouple, composed of Nickel-Chromium-Silicon (NiCrSi) as the positive leg and Nickel-Silicon-Magnesium (NiSiMg) as the negative leg, is known for its high stability and excellent resistance to oxidation, even at elevated temperatures. It operates in a broad temperature range from -200°C to +1300°C (-328°F to +2372°F), making it ideal for high-temperature applications.
Type N thermocouples offer superior performance in harsh environments, including those with high oxygen content, as they are less prone to drift compared to other types like Type K. Their stability is particularly beneficial for long-term temperature measurement accuracy in industrial processes. With moderate sensitivity (around 39 µV/°C), Type N thermocouples are used in applications such as heat treatment, high-temperature furnaces, and industrial kilns, offering durability and reliability in high-temperature, oxidative, or corrosive environments.
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:
Operates effectively from -200°C to +1300°C (-328°F to +2372°F), suitable for both low and high-temperature applications.
Highly resistant to oxidation, even at elevated temperatures, making it ideal for use in oxidative environments.
Offers long-term stability and minimal drift compared to other thermocouples, such as Type K, which ensures more reliable and consistent temperature measurements over time.
Provides a moderate EMF output of around 39 µV/°C, offering good accuracy while not being as sensitive as some other types like Type E.
Withstands harsh environments, including high-temperature furnaces, kilns, and other industrial processes where durability is crucial.
Less prone to degradation or loss of calibration in extreme conditions, making it suitable for long-term use in demanding applications.
These features make Type N thermocouples particularly valuable in industrial settings where long-term accuracy and stability are essential.
Type N thermocouples, with their high stability and resistance to oxidation, are ideal for a variety of industrial and scientific applications, particularly in high-temperature and harsh environments. Here are some key applications:
Used in heat treatment processes, including industrial furnaces and kilns, for precise temperature control at temperatures up to 1300°C (2372°F).
Suitable for aerospace and automotive industries where extreme temperature monitoring is required during testing and development.
Commonly used in applications like ceramics firing and glass manufacturing, where accurate temperature readings are necessary.
Employed for monitoring temperatures in high-temperature reactors or boilers where corrosive and oxidative conditions exist.
Ideal for high-temperature research experiments in laboratories that require stable, accurate temperature measurements in oxidative or extreme environments.
Utilized in systems that require precise thermal management, such as heat exchangers used in chemical processing or energy production.
While more commonly used in higher temperatures, Type N thermocouples can also be utilized for cryogenic applications due to their stability across a broad range of temperatures.
Type N thermocouples are chosen for applications requiring long-term accuracy, high temperature tolerance, and resistance to oxidation.
