THERMOCOUPLE CONNECTORS

Thermocouple connectors are used to transmit temperature readings from a thermocouple (T/C). These specialized connectors are designed to extend the thermocouple wire and must be rated for a particular T/C. Lettered choices for thermocouple types include B, C, E, J, K, N, R, S, T, and W. For each type or thermocouple, the appropriate connector is attached to the thermocouple terminals. The connector ground protects against errors caused by electrical noise

Connection Type and Gender

Thermocouple connectors carry specifications for connection type and gender. Contact-type devices have pins or plugs and sockets. Products with pins or plugs are designated as male connectors while devices with sockets or receptacles are termed female connectors.

Contact Material, Contact Plating and Wire Size

Specifications for thermocouple connectors include contact material, contact plating, and wire size. Choices for contact material include copper, gold, platinum, palladium, silver, tungsten and molybdenum. Gold and tin are common plating materials. Wire sizes are measured in inches (in) and fractions of inches, or centimeters (cm).

Approval and Color Codes

Thermocouple connectors differ in terms of approval and color codes. Products sold in North America may bear the UL Mark from Underwriters Laboratories (UL). Products sold in Europe comply with RoHs, a European Union (EU) directive that requires all manufacturers of electronic and electrical equipment to demonstrate that their products contain only minimal levels of specific hazardous substances. In terms of color codes, thermocouple connectors may follow standards from ANSI, the IEC, or DIN.