Thermocouple Cable By Conductor Type
Choose your thermocouple cable solution by the conductor type that meets your application requirements. Specifying multiple-pair thermocouple cables based on the conductor type involves several key considerations:
- Type of Thermocouple: First, identify the type of thermocouple required (e.g., Type K, Type J, Type T, Type E, Type N, etc.), as each type uses different metals or alloys and is suitable for different temperature ranges and environments.
- Conductor Material: Ensure the conductor material matches the type of thermocouple. For example, a Type K thermocouple typically uses a Chromel (Nickel-Chromium) and Alumel (Nickel-Aluminum) conductor. Also, remember to confirm the purity grade of the conductor materials. Higher purity will result in the most accurate temperature tolerance but will also result in higher cost.
Wire color codes by thermocouple conductor type
- Temperature Range: Consider the operating temperature range. The conductor material should be capable of withstanding the maximum and minimum temperatures expected in the application.
- Insulation Material: Select an insulation material suitable for the operating environment and temperature range. Frequently used insulation materials include FEP PFA polyimide, PVC, nylon, CEFIR, G- and Q-Glass fiberglass.
Insulation types identified by temperature ranges
When specifying a thermocouple cable, confirm the temperature tolerance will adequately support the application.
ASTM E230/E230M-17 Temperature Tolerance
- Wire Gauge: Determine the appropriate wire gauge, which affects the maximum length of the thermocouple and its resistance. A larger gauge can support longer distances and has lower resistance. While solid wire is more commonly used based on thermocouple single-wire applications, stranded wire provides greater flexibility and durability for cable applications.
- Environmental Considerations: If the cable is used in harsh environments (like corrosive or high-humidity areas), choose a conductor and insulation that can withstand these conditions.
- Shielding: Decide if electromagnetic shielding is needed to protect the signal from interference.
- Length and Termination: Specify the length of the cable and the type of termination needed (e.g., connectors, bare wire, or custom wire and cable assemblies).
- Calibration and Accuracy: Consider your application's calibration requirements and accuracy. Depending on the application requirements, the thermocouple cables require specific calibration to ensure precision.
- Certifications and Standards: Finally, ensure the thermocouple cable specified for the applications meets the relevant standards and certifications required for the industry or application.
It's helpful to consult with the applications experts at TE Wire to ensure the cable specifications meet your exact needs.
About TE Wire & Cable LLC
TE Wire & Cable LLC, a Marmon Wire & Cable/Berkshire Hathaway Company, is a premier Thermocouple and Specialty wire and cable manufacturer that formed from the Wire and Cable Division of the Thermo Electric Corporation. TEW&C operations for the manufacture of wire and cable have been in existence for more than 79 years. Starting in 1941, TEW&C committed to a mission of providing high-quality wire to the temperature measurement markets, supplying applications from cryogenic up to 1300°C temperatures. Presently, TE Wire & Cable manufactures a full line of thermocouple wire and cable, from iron and nickel-based alloys, and copper with a full line of insulating materials ranging from PVC to high-end CEFIR®, ceramic fiber braids.