Fe-CuNi Type J Thermocouple Compensating Extension Wire For Scientific Applications

Fe-CuNi Type J Thermocouple Compensating&Extension Wire for Scientific Applications

Type J thermocouples consist of iron (Fe) and copper-nickel (CuNi), with the positive wire being black and the negative wire white. They are marked with JX for thermowire and JC for compensating wire, although DIN EN 60584-3 does not define compensating wires for Type J. Type J thermocouples operate from -40°C to +350°C, with extension wires rated for 0 to 200°C . They are suitable for short-term use up to 750°C and long-term use up to 600°C. They are used in vacuum, oxidizing, reducing, or inert atmospheres, making them ideal for industrial processes, air conditioning technology, and complex industrial applications. The extension wires have a conductor cross-section of 0.22 mm², an outer diameter of approximately 3.4 mm, and are halogen-free, flame retardant, and self-extinguishing. Type J thermocouples have a tolerance class of ±1.5°C/±0.4%t, ensuring accuracy in temperature measurement.

In summary, Fe-CuNi Type J thermocouples and their extension wires are robust, versatile, and accurate tools for temperature measurement in a wide range of industrial and technical applications.

color codes of thermocouple ( J type )

The operating temperature range of type J thermocouple is -210~1200℃ , but it is usually used in the temperature range 0~750℃ due to embrittlement of Iron.

Type J thermocouple has good resistance to oxidation and high EMF output against Platinum 67, with good temperature accuracy, sensitivity and stability. It is recommended for vacuum, oxidizing, reducing or inert atmospheres, but it can not be used in sulphurous atmosphere above 500℃ .

Thermocouple temperature range and tolerance

Some Key Features Fe-CuNi (Type J) Constantan Thermocouple Extension Wire include:

• Temperature Range: Type J thermocouples are designed for a broad temperature range from -180°C to +700°C, with an operating range specified in the standard DIN EN 60584 from -40 to +750°C.
• Material Composition: The positive leg (Fe) is made of 99.5% iron with small amounts of manganese and copper, while the negative leg (CuNi) consists of approximately 55% copper and 45% nickel, with minor amounts of cobalt, iron, and manganese.
• Physical Properties: Type J thermocouples have a density of 7.8 g/cm³ for the iron (JP) leg and 8.9 g/cm³ for the copper-nickel (JN) leg. They also have a high tensile strength and elongation, with a resistivity of 0.12 μΩ·m for the JP leg and 0.49 μΩ·m for the JN leg.
• Standards and Compatibility: Type J thermocouples comply with the IEC60584-1 standard, ensuring global consistency in quality and performance.
• Resistance to Oxidation: Type J thermocouples have good resistance to oxidation and offer a high EMF output against Platinum 67, making them suitable for use in vacuum, oxidizing, reducing, or inert atmospheres.
• Color Coding: According to international standards, Type J thermocouples have a black sheath, with the positive iron wire also black and the negative constantan wire white. They are marked with JX for thermowire and JC for compensating wire, although DIN EN 60584-3 does not define compensating wires for Type J.
• Applications: They are used in aerospace, energy chemical, oil exploration, mechanical and electrical equipment, and high-frequency discharge lamp fields due to their resistance to high temperature, pressure, and radiation.
• Insulation and Sheath Material: Type J thermocouples can be equipped with various insulation materials such as fiberglass, Kapton, silicone, and PFA-Teflon, allowing for use in different temperature ranges and environments.

These features make Type J thermocouple extension wires a reliable choice for temperature measurement in a variety of industrial and scientific applications.

Applications:

• High-Temperature Environments: Type J thermocouples are suitable for applications at high temperatures in vacuum, oxidizing (air), reducing, or inert atmosphere (inert gases). They are particularly useful in furnaces and kilns where high temperatures are required.
• Plastic Industry: They are used to control and measure the processing temperatures of injection molds, ensuring the quality and consistency of plastic products.
• Food Industry: Type J thermocouples are used in various food industry equipment such as ovens and refrigerators, which require accurate temperature control for safety and quality.
• Metal Heat Treatment: In manufacturing, Type J thermocouples are used for the heat treatment of metals like steel, given their strength and efficiency at moderate temperatures.
• Automotive Industry: They are used for monitoring component temperatures within vehicles, ensuring performance and safety.
• Aerospace Industry: Type J thermocouples are used in aerospace applications where high temperatures and reliability are critical.
• Medical Applications: They are used for monitoring body temperature during surgery, providing accurate temperature readings in a sterile environment.
• Laboratory Settings: Type J thermocouples are used in laboratory experiments that involve high temperatures, offering precise temperature measurement.
• HVAC Systems: They are used for indoor climate management, ensuring comfort and energy efficiency.
• Petrochemical Sector: Type J thermocouples are used in the petrochemical industry for process control and in power generation facilities to monitor turbine temperatures.

These applications highlight the versatility and importance of Type J thermocouples in a range of industrial and scientific settings where accurate temperature measurement is essential.

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.