The purpose of a Thermocouple Connector is to ensure the Temperature Measurement Signal from your thermocouple sensor or lead wire to the instrumentation is accurately transmitted.
The First Step in choosing your thermocouple connector is to ensure the Thermocouple alloys within the connector match the thermocouple sensor and or lead wires. This sounds Very Basic, although thermocouple connectors are typically available in 10 Different types of Thermocouple Alloys. Many times these alloys are referred as Calibrations. The most common calibrations are J, K, T, E, N, C, R/S, U (B).
Color Coding is used to help identify and match the connectors to the sensors and wire, although the color identification is Different in the USA as compared to International guidelines and other countries across the globe. Additional details on color codes is outlined later in this document.
Beyond ensuring the connector, sensor and or wire are all the same calibration the Temperature Range of a thermocouple connector is one of the Primary Criterias to consider in your temperature measurement application.
The thermocouple connector metal alloy pins are capable of temperatures from Below Zero to above 2,000F. Although the Functional Temperature range of thermocouple connector is determined by the Connector Body Materials. Typically the various connector body materials allow a temperature ranges from - 40 F to 1200 F (-40 C to 650 C). Although the specific range is determined if Thermoplastic, Thermosets or Ceramics Bodies are selected.