NiCr-CuNi Type E Constantan Thermocouple Wire in Engine Protection and High-Temperature Control

NiCr-CuNi Type E Constantan Thermocouple Wire is a temperature-sensing device composed of two distinct metal wires: nickel-chromium (NiCr) for the positive leg and copper-nickel (CuNi or Constantan) for the negative leg. It is designed to operate within a broad temperature range of -200°C to 900°C, making it suitable for a variety of applications.

Key features of Type E thermocouples include high sensitivity, which allows for the detection of small temperature changes, and good accuracy, particularly in the low-temperature range up to 300°C. They also exhibit resistance to corrosion in oxidizing or inert atmospheres, although they should be used with caution in reducing atmospheres or those containing sulfur.

Type E thermocouples are non-magnetic, which is beneficial in applications where magnetic fields are present. They are used in a wide range of industries, including automotive, aerospace, food processing, chemical, and power generation, for temperature measurement and control. Manufactured to comply with international standards, these thermocouples ensure quality and reliability in temperature monitoring.

Color codes of thermocouple ( E type )

Type E thermocouple has the largest EMF output and highest sensitivity, so it is ideal for measuring small temperature change. It also has good stability in the low temperature range up to 300 ℃ , and good property of anti-corrosion in humidity atmosphere. It is recommended for oxidizing or inert atmospheres, but cannot be used directly in reducing atmosphere and atmosphere with sulphur gases.

key features of NiCr-CuNi (Type E) Constantan Thermocouple Wire include:

• Composition:

Positive Leg (NiCr): Composed of a nickel-chromium alloy, providing high resistance and good stability.

Negative Leg (CuNi or Constantan): Composed of a copper-nickel alloy, which is relatively stable and less sensitive to oxidation than pure copper.

• Temperature Range:

-200°C to 900°C (-328°F to 1652°F) for the most common applications, though it can be used outside this range depending on the specific construction and materials.

Especially effective in the lower temperature range, making it ideal for cryogenic and low-temperature applications.

• High Sensitivity:

Seebeck coefficient of approximately 68 µV/°C, giving it a high voltage output per degree of temperature change, which allows for better precision in temperature readings.

More sensitive than other thermocouple types (e.g., Type K, Type J) in the lower temperature ranges.

• Accuracy:

Offers good accuracy, often within ±1.0°C or ±0.75% of the reading, depending on the temperature range.

Type E thermocouples are especially accurate in the range of 0°C to 100°C, where they exhibit the best performance.

• Linearity:

The voltage-to-temperature relationship of Type E is relatively linear, particularly at lower temperatures, which improves measurement reliability.

A more linear response translates to more consistent readings and easier calibration.

• Good Stability:

Type E thermocouples are known for their long-term stability and minimal drift over time, which ensures consistent performance throughout their lifetime.

This makes them suitable for use in precision measurements and calibration applications.

• Corrosion Resistance:

The copper-nickel alloy (Constantan) provides better corrosion resistance than other materials, although it is not as resistant to corrosion as other thermocouples made with platinum or other precious metals.

Type E thermocouples generally perform well in moderate environments.

Applications:

• Cryogenics: Widely used in cryogenic temperature measurements due to its high sensitivity in the lower temperature range.
• Laboratory & Scientific Applications: Ideal for research purposes where precise, stable temperature measurement is critical.
• Industrial Calibration: Often used in temperature calibration for other sensors due to their high accuracy and reliable output.
• Gas Turbines & Aerospace: Sometimes used in aerospace and gas turbine temperature monitoring due to their stable performance under moderate conditions.

Type E thermocouples, due to their high sensitivity, linear output, and good stability, are preferred in applications where precision is crucial, particularly in the lower temperature ranges.

Advantages Over Other Thermocouples:

• Higher sensitivity than other commonly used thermocouples such as Type K or Type J, especially in the lower temperature range.
• More stable and less prone to drift over time compared to thermocouples like Type J or Type T.
• Excellent resolution in low-temperature applications, making it valuable in precision instrumentation and scientific research.

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.