NiCr-NiSi Type K Thermocouple Wire And Cable Ideal For Industrial Laboratory And Scientific Uses

NiCr-NiSi Type K Thermocouple Wire And Cable Ideal For Industrial Laboratory And Scientific Uses

NiCr-NiSi (Type K) Thermocouple Wire and Cable is a widely used thermocouple material designed for measuring temperatures in a range of industrial and scientific applications. It is composed of two distinct alloys—Nickel-Chromium (NiCr) and Nickel-Silicon (NiSi)—and is known for its durability, accuracy, and high-temperature performance.NiCr-NiSi (Type K) Thermocouple Wire is a versatile and reliable choice for high-temperature applications, offering durability, accuracy, and affordability for a wide range of industrial needs.

Color codes of thermocouple wire (K type)
 
Positive wire is yellow, negative wire is red. 

 
Thermocouple temperature range and tolerance
 

Key Features of Type K Thermocouple Wire:

• Wide Temperature Range:

Operates effectively between -200°C to +1250°C (-328°F to +2282°F), making it suitable for high-temperature applications.

• High Durability:

Resistant to oxidation, corrosion, and mechanical wear in demanding environments, including high-humidity and oxidizing atmospheres.

• Good Stability and Sensitivity:

Provides reliable and accurate temperature measurements over a wide range.

Has a Seebeck coefficient (thermoelectric voltage) that ensures sensitivity across the operating temperature range.

• Robust Material Composition:

Positive Leg (KP): Nickel-Chromium (approximately 90% Ni, 10% Cr).

Negative Leg (KN): Nickel-Silicon (approximately 95% Ni, 2% Si, and trace elements).

• Compatibility:

Widely used with thermocouple connectors, extension cables, and measurement instruments.

Standardized by international thermocouple standards like IEC 60584 and ANSI MC96.1.

• High Oxidation Resistance:

Suitable for oxidizing atmospheres, but not recommended for reducing or sulfurous environments at high temperatures.

• Cost-Effective:

Type K thermocouples are less expensive compared to noble metal thermocouples (e.g., Type R or S), while still offering reliable performance.

Applications:

• Industrial Processes: Furnaces, kilns, and heat treatment.
• Aerospace: Jet engine monitoring and exhaust gas temperature measurement.
• Automotive: Emission testing and temperature monitoring in engines.
• Energy: Power plants, including gas turbines and boilers.
• General Manufacturing: Plastics, glass, and metal processing.

Advantages of Type K Thermocouple Wire:

• Wide temperature range.
• High durability and resistance to oxidation.
• Cost-effective and widely available.
• Reliable and accurate performance for most industrial applications.

Limitations:

• Not suitable for use in reducing, vacuum, or sulfurous environments at high temperatures, as this can degrade the materials.
• Susceptible to drift at extremely high temperatures over time.