Type K Thermocouple Extension Wire For Industrial Temperature Measurement In

Product Specification

Type K ThermocoupleExtension Wire for Industrial Temperature Measurement in Various Applications

NiCr-NiSi (Type K) thermocouple compensating and extension wire is designed for high-precision temperature measurement in a broad range of industrial and scientific applications. The wire consists of a Nickel-Chromium (NiCr) positive leg and a Nickel-Silicon (NiSi) negative leg, which together generate a stable thermoelectric voltage in response to temperature changes.

Widely used in industries such as automotive, food processing, pharmaceuticals, chemical processing, and general industrial settings.

Extension Wires Extend the distance between the thermocouple and measurement device without significant signal degradation.

Compensating Wires Maintain accurate temperature measurement over long distances by compensating for ambient temperature effects.

In summary, NiCr-NiSi (Type K) compensating and extension wire is an excellent choice for precise and reliable temperature measurement over a wide temperature range, offering durability, flexibility, and cost-effectiveness.

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

Thermocouple temperature range and tolerance

Compensating Wire Reciprocating Resistance

Key Features of NiCr-NiSi (Type K) Thermocouple Compensating and Extension Wire

• Material Composition:

Positive Leg: NiCr (Nickel-Chromium) alloy for the positive leg.

Negative Leg: NiSi (Nickel-Silicon) alloy for the negative leg.

These materials are specifically selected for their ability to generate a stable and predictable voltage difference in response to temperature variations.

• Temperature Range:

Measuring Range: Typically from -200°C to 1372°C (-328°F to 2502°F), making it suitable for a wide range of high-temperature applications.

Extension/Compensating Wire Range: Generally works within the same range but may have slightly reduced tolerance at the extremes of the temperature scale.

• High Stability and Accuracy:

Type K thermocouples provide reliable and repeatable readings, making them one of the most widely used thermocouples for general temperature measurement applications.

The thermoelectric voltage generated by NiCr and NiSi is consistent over a wide temperature range, ensuring stable measurement.

• Compatibility with Other Equipment:

Extension Wires: Used to extend the signal from the thermocouple to the measurement device without introducing significant error. Extension wires are designed to mimic the thermocouple’s electrical properties (voltage response).

Compensating Wires: These wires are used to maintain the voltage and accuracy of the signal over long distances, minimizing the effects of ambient temperature and electrical interference.

• Corrosion Resistance:

NiCr (Nickel-Chromium) alloy used in the positive leg offers good oxidation resistance and is durable in high-temperature environments.

NiSi (Nickel-Silicon) alloy used in the negative leg offers better performance in harsh environments where contamination or oxidation is a concern.

• Flexibility and Durability:

Available in flexible cables that can withstand mechanical stresses, making them suitable for dynamic or moving parts in industrial environments.

Resistant to moisture, making them durable in environments where there may be exposure to humidity or varying environmental conditions.

• Ease of Integration:

The wire is compatible with a wide range of industrial instrumentation and temperature controllers, making it easy to integrate into existing systems.

Often available in pre-configured lengths and with various insulation types (PVC, fiberglass, etc.) depending on the application.

• Cost-Effectiveness:

Type K thermocouples, including the compensating and extension wires, are relatively low-cost compared to other thermocouple types (such as Type B, Type R, or Type S), making them a popular choice in many industries.

• Temperature Coefficient:

The thermoelectric voltage generated by Type K thermocouples is highly sensitive to temperature, providing a wide and linear temperature response, which ensures accuracy over a broad measurement range.

• Electrical Insulation:

Insulation materials (such as PVC, Teflon, fiberglass) are used to protect the wire from environmental factors like heat, moisture, and mechanical wear while maintaining the wire’s electrical integrity

Applications:

• General Industrial Use: Used in furnaces, ovens, and kilns.
• Chemical and Pharmaceutical: Monitoring reactors, dryers, and distillation columns.
• Automotive: In engine temperature measurement.
• Food Processing: For temperature control during cooking or pasteurization.