Type K Fine Wire Thermocouple Sensor This thermocouple sensor is constructed using a 1m length PTFE wire constructed as a twisted pair. The wire used is Class 1 Type T alloys (NiCr / NiAl) A weld bead is manufactured at one end of the wire whilst the other end is terminated in a moulded miniature thermocouple plug The cable can be wrapped around the plug to keep it tidy Measurement Temperature: -100°C to +250°C