NiCr-CuNi Type E Constantan Thermocouple Wire Versatile and Accurate for Industrial

NiCr-CuNi Type E Constantan Thermocouple Wire Versatile and Accurate for Industrial
 

NiCr-CuNi Type E Thermocouple Wire is a highly accurate thermocouple material known for its excellent thermoelectric properties and high sensitivity. It consists of a positive leg made of Nickel-Chromium alloy (NiCr) and a negative leg made of Copper-Nickel alloy (CuNi), also known as Constantan. Type E thermocouples are ideal for applications requiring precise temperature measurements in a wide range of environments.

NiCr-CuNi Type E (Constantan) Thermocouple Wire is a highly sensitive and accurate thermocouple material suitable for cryogenic and moderate high-temperature applications. Its superior thermoelectric output, non-magnetic nature, and excellent performance in clean environments make it ideal for precise temperature measurement in scientific, industrial, and medical applications.
 
Color codes of thermocouple ( E type )
 

 
 

Key Features of NiCr-CuNi (Type E) Thermocouple Wire:

• High Sensitivity

Produces the highest thermoelectric output (Seebeck coefficient) of all standard thermocouple types, approximately 68 µV/°C, making it highly sensitive to temperature changes.

• Wide Temperature Range

Operates effectively in temperatures from -270°C to 870°C (-454°F to 1600°F).

Particularly effective for cryogenic and moderate high-temperature applications.

• Excellent Accuracy

Provides precise temperature readings with standard tolerances of ±1.7°C or ±0.5% of the measured temperature.

• Good Corrosion Resistance

Resistant to oxidation in clean and dry environments, but not suitable for reducing or sulfurous atmospheres.

The Constantan (CuNi) leg provides stability in various conditions.

• Material Composition

Positive Leg (NiCr): Typically 90% Nickel and 10% Chromium.

Negative Leg (CuNi/Constantan): Typically 55% Copper and 45% Nickel.

• Electrical Properties

Stable thermoelectric behavior ensures consistent readings over extended periods.

Ideal for low-voltage signal measurement.
 
Applications

• Suitable for laboratory, industrial, and cryogenic applications.
• Commonly used in medical devices, scientific research, and food processing industries.
• Preferred for environments where high sensitivity and precise readings are critical.

Cable Options

• Available in bare wire or insulated wire and cable with various insulation materials, such as fiberglass, PVC, or Teflon, for diverse environments.
• Shielded cables are available for applications requiring noise resistance.

Advantages of Type E Thermocouple Wire:

• Superior sensitivity, ideal for detecting small temperature changes.
• Can be used in cryogenic environments due to its low-temperature performance.
• Non-magnetic, making it suitable for sensitive applications.
• High signal output reduces the need for amplification in some setups.

Limitations:

• Limited resistance to reducing or sulfurous atmospheres, which can degrade the wires.
• Not suitable for very high-temperature environments beyond its upper limit of 870°C (1600°F).