Copper Constantan thermocouple material for low-temperature and moisture-prone measurement

Type T is a base-metal thermocouple type that uses Copper as the positive leg and Constantan as the negative leg. It is often selected for low-temperature, cryogenic, laboratory, refrigeration, and moisture-prone applications where stability at lower temperatures matters.

Thermometrics manufactures Type T thermocouple assemblies as wire sensors, probes, plug-and-lead sensors, surface sensors, and custom replacement assemblies built to drawing.

Common Type T RFQ details

  • Temperature range and atmosphere
  • Grounded, ungrounded, or exposed junction
  • Sheath or protection tube material
  • Insertion length, lead length, and termination
  • Calibration or tolerance documentation requirements

Type T temperature range

Type T is commonly referenced for approximately -454°F to 700°F (-270°C to 370°C). The practical assembly rating depends on insulation, environment, conductor size, probe construction, and documentation requirements.

Type T thermocouple material

Type T uses Copper for the positive conductor and Constantan for the negative conductor. It is known for good low-temperature stability and is often reviewed when moisture resistance or cryogenic performance is part of the requirement.

Type T chart PDFs

Celsius Chart

Download the Type T thermocouple reference table in Celsius.

Open C chart

Fahrenheit Chart

Download the Type T thermocouple reference table in Fahrenheit.

Open F chart

Color Codes

Review common thermocouple wire color code references.

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Thermocouple Family

Compare Type T with other common thermocouple options.

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When Type T is a strong fit

  • Low-temperature and cryogenic measurement points
  • Refrigeration, laboratory, and validation work
  • Moisture-prone installations where Type T is already specified
  • Replacement sensors for equipment wired for Type T input

When to review alternatives

Type E may be reviewed where higher EMF output is useful. Type K or Type N may be better for higher-temperature service. RTDs may also be reviewed where higher accuracy and repeatability are more important than thermocouple simplicity.

Related thermocouple resources

Thermocouple Family

Compare common thermocouple types and assembly formats.

View thermocouples

Color Codes

Review common thermocouple wire color code references.

View color codes

Wire Sensors

Custom wire and cable thermocouple sensors for replacement and OEM work.

View wire sensors

Request Replacement

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Need a Type T thermocouple built to fit?

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