Industrial Head Thermocouple Assemblies for Process Temperature

How the assembly works

The head, fitting, and sheath can look similar to an industrial RTD assembly, but the sensing point is a thermocouple junction. That makes the build more suitable for higher-temperature or more rugged service, while the connection head still provides a protected terminal block or head-mount transmitter location.

How to specify an industrial head thermocouple

When to choose thermocouple instead of RTD

Choose a thermocouple when the process runs hotter, the probe needs to survive more severe service, response time is a priority, or the measurement point benefits from a grounded, ungrounded, or exposed junction instead of a resistance element. Choose an RTD when tighter accuracy, repeatability, and long-term stability are the primary requirements.

Terminal block or transmitter?

A terminal-block head keeps the thermocouple signal available for instrumentation that accepts thermocouple input. A head-mount transmitter converts the millivolt signal to a two-wire 4-20 mA output and is useful when the cable run is long, electrical noise is a concern, or the control system expects current-loop input.

Information that prevents quote churn

For an accurate build, provide the thermocouple type, junction style, process temperature range, sheath material and OD, immersion length, process connection, thermowell details if applicable, connection-head material, conduit entry, transmitter requirement, and any calibration or material documentation needed with the order.