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The Type T thermocouple wire is composed of a copper (+) wire versus a nickel-45% copper (-) wire. The Type of thermocouple wire is frequently referred to as copper-constantan. This type of thermocouple can be used in oxidizing, reducing, or inert atmospheres with a service temperature range between -200°C and 370°C (-330°F to 700°F). The high temperature use of this thermocouple is also limited due to rapid oxidation of the copper element. The Type T thermocouple wire is one of the few thermocouples which have established limits of error for use in subzero and cryogenic applications. This is possible due to the Type T's superior corrosion resistance in moist environments.

Detailed Parameter of thermocouple wire

Chemical Composition

Conductor Name Polarity Code Ni /% Cu /%
Copper Positive TP -- 100
Copper-Nickel Negative TN 45 55

Working Temperature

Diameter/mm Long time Working temperature /ºC Short period Working temperature /ºC
0.2, 0.3 150 200
0.5, 0.8 200 250
1.0, 1.2 250 300
1.6, 2.0 300 350

Application of thermocouple wire:

  1. Aerospace and Composites
  2. Aluminum
  3. Food and Pharmaceutical
  4. Forgings
  5. Glass, Ceramics, Clay Tiles, Bricks
  6. Heat Treating
  7. Petroleum, Downhole Oil & Gas
  8. Sensor Manufacturing
  9. Steel
  10. Utilities Power Generation