A thermocouple is a device for measuring temperature. Itprises two dissimilar metallic wires joined together to form a junction. When the junction is heated or cooled, a small voltage is generated in the electrical circuit of the thermocouple which can be measured, and this corresponds to temperature. In theory, any two metals can be used 2 Channles Thermocouple Meter VA8060. Hot Product Moisture Meter VA8040 Hot Products. Auto Ranging 5-In-1 Environmental Digital Multimeter VA19. 2-In-1 Insultation Multimeter VA588 With 2 Gigaohms Insulation Resistance Up To 1000rporated in., is one of the leading This 2 channles thermocouple meter is a rugged, easy to use thermometer with 4 digits dual LCD Digital Multi-channel Temperature Tester Meter 8 Channel Temperature Inspection Recorder with Beeper m Expandable Data Logger. faster and more stable. Measure accuracy 0.2℃+2, Cold junctionpensation accuracy: 0.5℃. up to 64 channels Thermocouple: K J T Jan 31, 2020 · A thermocouple can be identified by the color of its wire insulation. For example, in the United States a type J thermocouple has one red wire and one white wire, typically with a brown over jacket. A type J extension grade wire also has one red wire and one white wire, but it has a black over jacket.