Thermocouples Thermocouples are an accurate yet inexpensive sensor for measuring temperatures. The Pico range of Type K thermocouples are ideal for industrial and educational use. Thermocouple Quick Select Type K Thermocouple (Exposed Wire, PTFE Insulated) * * Tip diameter: 1.5 mm Tip temperature: -75 to +250 C Cat No Length SE000 1 metre SE027 2 metres SE028 3 metres SE029 10 metres Type K Thermocouple (Exposed Wire, Fibreglass Insulated) * * Tip diameter: 1.5 mm Tip temperature: -60 to +350 C Cat No Length SE001 1 metre SE030 2 metres SE031 5 metres SE002: Type K Thermocouple (Air Probe) * * * Tip diameter: 4.5 mm Tip temperature: -50 to +250 C Probe length: 120 mm SE003: Type K Thermocouple (Insertion Probe) * * * Tip diameter: 3.33 mm Tip temperature: -50 to +250 C Probe length: 120 mm SE004: Type K Thermocouple (Ribbon Surface Probe) * * * Tip diameter: 8 mm Tip temperature: -10 to +250 C Probe length: 120 mm