Type T, Cu-CuNi
Type T thermocouple consists of a positive copper wire and a negative constantan wire. This thermocouple is perfectly usable in the temperature range of -200°C to 200°C. Both conductors are nonmagnetic, meaning they have no Curie point and therefore no direct change in characteristics. With a sensitivity of 43 µV/°C, type T has a bit more sensitivity than type K. However, copper has a higher thermal conductivity therefore there is need for extra care when thermally anchoring type T thermocouples. For this reason, and because of only copper wire coming into contact with the probe, it is often used as a differential measurement.
The type T is well suited for oxidizing atmospheres.
Please visit our sheath material page for more information about the available sheath material and their individual characteristics.