KK-WIRE

Supported Applications

The Omega KK-Wire series consists of Kapton® Duplex Insulated Thermocouple Wire designed for temperature measurement applications. The product line includes both TFE insulated and Kapton® duplex insulated variants, featuring fused tape insulation on conductors and jackets. While the broader family offers TFE options with superior abrasion, moisture, and chemical resistance, the Kapton® series is characterized by excellent moisture and abrasion resistance, high dielectric strength of 7 kV/mil, and retention of physical integrity after gamma radiation.

Operating Conditions & Performance

The documented maximum temperature for both TFE Insulated and Kapton® Duplex Insulated thermocouple wire is 260 °C (500 °F). The FEP adhesive binding agent used in the construction melts at approximately 260°C. Nominal dimensions vary by model, with examples including 1.5 x 2.5 mm (0.060 x 0.100 inch) and 1.3 x 1.9 mm (0.050 x 0.075 inch). Weight per length also varies; for instance, some models list a weight of 5 kg (11 lb)/1000' while others are listed at 3 kg (6 lb)/1000'.

Configuration Options

The series supports multiple thermocouple calibrations including J, K, T, and E. Wire construction is available in solid or stranded configurations (7 x 28, 7 x 32). The following options are documented for the series:

• Insulation Types: Fused Polyimide Tape (Kapton®) or Fused TFE Tape.
• AWG Sizes: Available in various sizes including AWG 20, 20S, 24, 24S, and 30.
• Error Limits: Special limits of error (SLE) wire is available by adding 'SLE' to the model number before spool length.
• Spool Lengths: Standard lengths include 25', 50', 100', 200', 500', and 1000'. Other calibrations and lengths are available upon request.
• Protective Options: Metal overbraiding for improved wear and abrasion resistance, and electrical shielding for improved performance (consult sales).

Key Product Differences

The series distinguishes between two primary insulation types: TFE Insulated Thermocouple Wire and Kapton® Duplex Insulated Thermocouple Wire. The model number guide follows the format Type-Calibration-AWG No., such as KK-J-20 or TFE-K-24S. A key distinction noted in the documentation is that Kapton® wire is neither ANSI nor IEC color-coded, whereas TFE insulated options feature color-coded insulation on conductors and jackets. Model numbers for special limits of error include 'SLE' inserted before the spool length designation (e.g., KK-J-24-SLE-100).