NiCrSi-NiSiMg Type N Thermocouple Extension Wire Superior Oxidation Resistance

Product Specification

NiCrSi-NiSiMg Type N Thermocouple Extension Wire Superior Oxidation Resistance for Accurate Readings

NiCrSi-NiSiMg Type N Thermocouple Compensation and Extension Wire is engineered to ensure accurate temperature measurements by extending the reach of Type N thermocouples. This wire is composed of a positive leg made of nickel-chromium-silicon (NiCrSi) and a negative leg made of nickel-silicon-magnesium (NiSiMg), offering a wide operating temperature range from -200°C to 1300°C.

Key features include superior oxidation resistance due to the protective diffusion barrier formed by chromium and silicon in the positive leg and silicon and magnesium in the negative leg. This wire provides improved repeatability, especially in the 300°C to 500°C range, and exhibits magnetic stability, which is crucial for accurate temperature measurement.

Type N Extension Wire is used in various industrial applications, including furnaces, boilers, chemical processing equipment, power plants, automotive, and aerospace engines. It is manufactured to meet international standards, ensuring quality and reliability. The extension wire is designed to match the thermoelectric properties of the thermocouple, maintaining the accuracy of the temperature signal transmitted to the measuring or control device. These properties make Type N Compensation and Extension Wire a preferred choice for precise temperature measurement and control in demanding industrial environments.

Thermocouple temperature range and tolerance

Some key features of NiCrSi-NiSiMg Type N Thermocouple Compensating & Extension Wire include:

• Wider Temperature Range: Capable of withstanding a broad temperature range from -200°C to 1300°C, suitable for extreme environments.
• Oxidation Resistance: The high chromium content in the NiCrSi positive wire and the silicon and magnesium in the NiSiMg negative wire provide excellent resistance to oxidation.
• Improved Repeatability: Offers better repeatability in the 300°C to 500°C range compared to other types of thermocouples, ensuring more consistent temperature readings.
• Magnetic Stability: The composition of the wire contributes to its stability in magnetic fields, which is important for accurate temperature measurement.
• Longevity: The wire's composition and construction contribute to a longer operational life, with reduced EMF drift and short-term EMF changes.
• Resistance to Transmutation: The absence of certain elements like manganese, aluminium, and copper in the NN conductor makes it more stable against nuclear bombardment.
• Matching Thermoelectric Properties: The compensating and extension wires are designed to match the thermoelectric properties of the thermocouple over a certain temperature range, typically from -25°C to 200°C.
• Standard Compliance: Manufactured to comply with international standards, ensuring reliability and consistency in performance.
• Versatile Applications: Suitable for use in a variety of industries, including automotive, aerospace, chemical, and power generation, where precise temperature measurement is critical.
• Cost-Effectiveness: Often more cost-effective than noble metal thermocouples, making it a popular choice for many applications.

Applications:

• Industrial Processes: It is used in various industrial processes that require precise temperature monitoring, such as in furnaces, kilns, and ovens.
• Chemical and Petrochemical Industries: The wire's resistance to oxidation makes it suitable for use in chemical and petrochemical plants where it can withstand harsh environments.
• Power Generation: Type N thermocouples are utilized in power plants for temperature measurement in steam turbines and other critical components.
• Automotive and Aerospace: They are installed in engines for temperature monitoring to protect against overheating and to optimize performance.
• Food Processing: The wire is used in food processing equipment that demands precise temperature control, such as ovens and freezers.
• Temperature Range: It can operate within a broad temperature range of -200°C to 1300°C, making it suitable for extreme temperature environments.
• Oxidation Resistance: The wire offers superior oxidation resistance due to the combination of higher levels of chromium and silicon in the positive Nicrosil conductor.
• Improved Repeatability: Type N thermocouples show much improved repeatability in the 300°C to 500°C range, where other types like Type K may exhibit instability.
• Magnetic Stability: The high levels of chromium in the NP conductor and silicon in the NN conductor provide improved magnetic stability.
• Longevity: Type N thermocouples have a longer operational life than Type K thermocouples, with reduced EMF drift and short-term EMF changes.
• Resistance to Transmutation: The absence of manganese, aluminium, and copper in the NN conductor makes Type N thermocouples more stable against nuclear bombardment, virtually eliminating the risk of transmutation.