thermocouple wire Calibration: K, J, E, T, Insulation material: PVC, Teflon or Fiberglass, Color code: ANSI, IEC, JIS, DIN STAN thermocouple wire1. Calibration: type ... . Color code: ANSI, IEC, DIN, JIS, BS & NFC standard4. Wire gauge: 14AWG, 16AWG, 18AWG, 20AWG, 22AWG, 24AWG5. Wire type: flat, round & twisted Thermocouple Wire