Chromel-Alumel Thermocouple - Assembly Instructions

Get one length of Chromel wire and another equal length of Alumel wire. Spot weld them together then add insulation sleeves, leaving the ends exposed to fit block connectors.

Fig. 1 Chromel and Alumel wire

Fig. 2 Spot Welder

Fig. 3 Welded wires

Fig. 4 Finished product with insulation (red marks the positive terminal - Chromel wire in this case)