Precision Temperature Monitoring in Harsh Conditions with NiCrSi-NiSiMg Type N Thermocouple Wire

NiCrSi-NiSiMg Type N Thermocouple Wire is a high-performance thermocouple designed for use in high-temperature environments. Known for its superior stability, oxidation resistance, and minimal drift over time, it is widely used in industrial applications such as furnaces, metalworking, and aerospace. With a wide temperature range and excellent long-term performance, Type N thermocouples are ideal for high-heat applications that demand reliable and accurate temperature monitoring. While they offer moderate sensitivity compared to other types, their longevity and resistance to oxidation make them an excellent choice for high-temperature industrial settings.

Thermocouple temperature range and tolerance

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

• High Temperature Range

Effective temperature range: -200°C to 1300°C (-328°F to 2372°F).

Suitable for both low and high-temperature applications, with excellent stability at temperatures exceeding those of Type K or Type J.

• Superior Stability

Type N thermocouples offer excellent long-term stability at high temperatures, especially compared to other high-temperature thermocouples like Type K.

Minimal drift over time, which reduces the need for recalibration.

• Oxidation Resistance

The Nickel-Chromium-Silicon (NiCrSi) and Nickel-Silicon-Magnesium (NiSiMg) alloys provide excellent oxidation resistance at high temperatures, making Type N thermocouples ideal for use in high-oxygen environments such as furnaces and kilns.

• Good Sensitivity

Moderate sensitivity (approx. 20 µV/°C at 1000°C) compared to other thermocouple types, providing accurate readings at high temperatures.

Lower sensitivity than Type K but sufficient for many industrial applications.

• Material Composition

Positive Leg (NiCrSi): Nickel, Chromium, and Silicon alloy for durability and high-temperature stability.

Negative Leg (NiSiMg): Nickel alloyed with Silicon and Magnesium, improving resistance to oxidation, corrosion, and wear.

• Electrical Properties

Stable thermoelectric output at high temperatures.

Lower noise in electrical signals due to improved material properties, ensuring more consistent readings in industrial environments.

Applications

• High-Temperature Processes: Used in high-temperature applications in the chemical, metallurgy, and aerospace industries.
• Industrial Furnaces & Kilns: Suitable for temperature monitoring in high-heat environments where traditional thermocouples like Type K may degrade over time.
• Heat Treatment & Metalworking: Can be used in heat treatments, metal forging, and casting operations requiring precise temperature control.
• Glass Manufacturing: Employed for temperature monitoring in glass manufacturing and other processes that involve extremely high heat.

Cable Options

• Available in bare wire, insulated wire, and cable forms, with insulation options such as ceramic, fiberglass, and high-temperature materials to protect against extreme conditions.
• Shielded or unshielded cables are available, with shielded cables providing protection against electromagnetic interference in industrial environments.

​Advantages of Type N Thermocouple Wire:

• Excellent High-Temperature Stability: Type N offers superior stability and longevity in high-temperature applications.
• Resistance to Oxidation: Outstanding performance in high-oxygen environments and high-heat atmospheres.
• Long-Term Reliability: Minimal drift over time ensures reliable, long-term temperature measurements without recalibration.
• Wide Temperature Range: Suitable for a wide range of temperatures, from low-temperature cryogenics to extremely high-temperature industrial processes.

Limitations:

• Lower Sensitivity: Compared to other thermocouples like Type K, Type N offers moderate sensitivity which may not be ideal for some precision applications.
• Cost: Type N thermocouples tend to be more expensive due to the high-quality alloys used and their superior performance at extreme temperatures.
• Not Ideal for Low-Temperature Use: While it performs well at high temperatures, Type N is not the best choice for cryogenic or extremely low-temperature applications compared to thermocouples like Type T.

Company Overview:

Jiangyin Chengxin Alloy Material Co., Ltd has more than 20 years of experience as the lead.ing alloy wire manufacturer in China. We offer a wide range of services from fine wire drawing toresistance wire manufacturing. Since the beginning, our specialty has been the quality and preci.sion of our products. We have the tightest tolerances and deliver within a few days to a fewweeks. As a result, we have become the leading alloy wire supplier in the industry.

Senphus Subsidiaries:

• Jiangyin Chengxin Alloy Material Co., Ltd.
• Jiangyin Senphus Electrical Materials Co., Ltd.
• Jiangsu Xiangcheng Supply Chain Management Co., Ltd.

Jiangyin Chengxin Alloy Material Co., Ltd.: With nearly 20 years of experience, Jiangyin Chengxin is a leading alloy wire manufacturer in China. We offer a wide range of services, from fine wire drawing to resistance wire manufacturing. Our specialty lies in the quality and precision of our products, achieving the tightest tolerances and delivering orders within days to weeks. As a result, we have established ourselves as the premier supplier of alloy wire in the industry.

Our product range includes:

• Copper-nickel alloys (CuNi1-CuNi44)
• Karma (Nikrothal L/Evanohm/Alloy 800)
• Manganin and Constantan
• Nickel-chromium alloys
• Thermocouple alloys (Type K, N, E, T, J)
• Thermocouple extension wire
• PTC thermistor resistance alloy
• Pure nickel wire and Monel alloy

These alloys are available in various forms, including wire, ribbon, stranded, and enamelled. Major applications include seat heating, underfloor heating, military projects, aerospace, household appliances, heating wire, mechanical and electrical plants, and temperature instruments. Our manufacturing processes are ISO 9001:2015 certified, and we specialize in fine and ultra-fine wire drawing, offering wire diameters from 0.025 mm (0.001") to 13 mm (0.51") in small batches, medium volumes, and mass production. We maintain a comprehensive quality inspection system, including in-house chemical analysis, chromatographic analysis, metallurgical analysis, pinhole tests, wire construction tests, and tension tests to ensure the highest quality standards.

Senphus Electrical Material Co., Ltd.: Founded in 2003, Senphus Electrical Material Co., Ltd. integrates research, manufacturing, and sales of electric heating alloys, heating cables, heating wires, and heating products. Leveraging over a decade of technical expertise in heating alloy wire, we have adopted advanced heating cable technology and machinery, successfully developing heating cables, temperature controllers, and temperature control systems suitable for building heating, pipe insulation, outdoor snow melting, wind power blade production, car seat heating, and healthcare applications.

The company is recognized as a high-tech enterprise in Jiangsu Province and a small giant enterprise in Jiangyin City, specializing in innovative technologies. We operate the "Wuxi Heating Cable Engineering Technology Research Center" and collaborate with experts from renowned domestic universities. Our portfolio includes 5 invention patents and over 30 utility model patents, showcasing our strong research and development capabilities.

With an annual output exceeding 1,000 tons of thermal alloy wire and an output value of approximately 105 million yuan, our products are well-received in markets such as the UK, Italy, Canada, Peru, and Spain. Our heating cables generate an annual output value of over 80 million yuan, with exports to Germany, Japan, the United States, Malaysia, Denmark, Brazil, and other countries.

The company has successfully passed multiple quality management system certifications, including IATF 16949, ISO 9001, ISO 14001 (Environmental Management System), and ISO 45001 (Occupational Health and Safety Management System). Our heating cables and related products have also obtained test reports from the Shanghai Cable Research Institute Test Center and received certifications such as UL (United States), VDE (Germany), CE (European Union), and RoHS.

Commitment to Quality: We adhere to the business commitment of "Reputation First, Quality First, Customer First" and uphold the quality policy of "Integrity-Based, Quality-Oriented, Excellent Service." We are dedicated to providing accurate products and professional services, and we look forward to collaborating sincerely with you to achieve mutual success.